BCHM 551 – BIOCHEMISTRY
Introduction
Biochemistry is a field of science that is often related to both science and biology and
focuses on studying the underlying processes of the biomolecules to determine how living
organisms work. There is also another major branch called molecular biology which deals with
the assembling, construction and structural as well as a functional and positional study of
biomolecules like proteins nucleic acids, lipids and carbohydrates. These studies illustrate how
even with biomolecules only prolongs, complicated the form’s progression from the cellular
level to whole organisms.
In today’s world biochemistry plays great role in few areas that are helpful in
diagnosising diseases, deficiency of genes and medications. It also funds last generation socio-
medicals including discovery of drugs, diagnostic tools and plays a core role in agriculture
improvement through breeding plants and controling pests.
Historical Background
Organic chemistry started in Ancient Ages in the form of alchemy which is known as
ancient chemistry Biochemistry The science of Biochemistry has the origin in the ancient period.
This branch of chemistry that majored on biochemical information in the 19th century included
some of the enzymes such as amylase this lipase. Absence of a cell was replaced by Eduard
Buchner in 1897 when the cell-free fermentation was demonstrated which proves that
biochemical reactions are possible even in absence of cells.
Key Figures and Milestones
Carl Neuberg: The Father of Biochemistry
Early Life and Education
Carl Alexander Neuberg’s first and last names are neuberg and he was born on 29th of
July in 1877 in Hanover in Germany. Malone was born in Germany in the year 1872 for his
doctorate, He went to University of Berlin where he studied chemistry and in the year 1900 he
obtained doctorate degree with the help of his supervisor Professor Emil Fischer.
Contributions to Biochemistry
Due to this, Neuberg was able to provide a lot of knowledge that was dual to the course of this
respective area of the intermediary metabolism as well as the action of enzymes. Some of his
key contributions include:Some of his main advances were as follows:
Enzyme Research: Some of the recent work by Neuberg has been on enzymes- the
activators of all chemical processes in the cell. By helping his advancements, the fine
nature and role or enzymes in the biological structures were well described. His
discoveries regarding enzyme catalysis were quite factual based on the perceptions of the
old archetypes where enzymes were only known to exist and act inside cells.
Intermediary Metabolism: Subsequent to Neuberg, the lessons that his work provided
to the history of biochemistry involved the further deliberation of the intermediate stages
of metabolic activities in cells wherein nutrients get converted into energy along with
compounds requisite for additional cell growth. He was also specialized in various kind
of intermediates such as carboxylic acids, alcohols and the like.
Neuberg Effect: In addition to this, he has extended an important discovery, which
indeed proved quite useful in the development of fermentation technology known as
Neuberg effect, which describes the way that yeast converts sugar into alcohol and
carbon dioxide in the absence of oxygen. It provided foundation of industrial
fermentation techniques that are in use up to date today.
Founding Journals and Societies: On the contrary, Neuberg actively collaborated for
the establishment of scientific journals & society for biochemical research. He
established a journal called “Biochemische Zeitschrift” which is today’s “Biological
Chemistry” is counted as one of the best journals to come out with.
Later Life and Legacy
As a result of the changes in the political climate within Germany in regard to the cinema due to
the Nazis coming into power, Neuberg’s films were stopped and emigrated to the US in 1939.
Despite these challenges, he was for a one able to get over them and successfully continue his
works on universities including the New Your University. Carl Neuberg passed away on 30. 5.
1956 but for those people who are aware of his work he would rather be known as the founder of
biochemistry. Pew of the basis upon which present day biochemistry is grounded are traceable
to him.
Watson and Crick: Discoverers of the DNA Double Helix
James Watson and Francis Crick: Backgrounds
James Watson: Barbara can be said to be a biologist and a geneticist born on April 6,
1928 in Chicago, Illinois. He received his bachelor’s degree from the university of
chcago then also at indiana university to later be awarded the doctoral degree in zoology.
Francis Crick: Crick was born on 8th of June in 1916 The family moved around
Northampton most of the time during their childhood He first enrolled at University to
study physics, but switched to biology. He switched to biological studies after University
College in London and joined the biological research during the second world war.
Some of the findings made by the two gentlemen’s is the shape of DNA molecules which
was appropriately named the double helix. James Watson began working as a Fully Paid Up
Member of the Cavendish Laboratory in the early part of the year 1950 and teamed up with
Francis Crick. These scientists collectively were instrumental in finding the shape of the DNA
molecule as the double helix in 1953. That was one of the greatest discovery in molecular and
genetics biology which defined the molecular aspect of heredity and prewasented a radical prior
to one of the greatest ideas of life.
1. Model Building: On contemplating the work of L. Pauling, Watson and Crick used the model
building, the method that the two applied to of figuring out the molecular structure of DNA.
They integrated data from various sources, including:Said sources include: They merged data
from different sources as follows:
X-ray diffraction images: This science program featured major critical papers from
Rosalind Franklin and Maurice Wilkins presenting X-ray diffraction of DNA images that
was propelling the helical structure.
Chargaff's Rules: Once Chargaff presented the data saying that the content of the base
pairs in DNA from any cell of any organism varies in inverse proportion, it became easy
to predict the mechanism of base pairing, that is, adenine is to thymine as cytosine is to
guanine.
2. Publication: Watson and Crick secured their model of the DNA molecule in “Nature” journal
in April 1953, in this work they provided a description of the DNA molecule as comprising of
two spirals in the form of a double helix with base pairs running in the strand. This structure
described precisely how the information within the genes could be stored and how it could get
replicated giving the process of heredity its final functionality.
3. Impact and Recognition: The discovery of the DNA double helix structure has impacted on
the progress of the biology fields and introduced magnificent achievements in the genetics,
molecular biology as well as Biotechnology. Ford remained a consultant for the company Up
until his death in 1971, Watson, Crick, and Wilkins were given the Nobel Prize in Physiology or
Medicine in 1962 for their works that led to the discovery of the molecular structure of nucleic
acids in living organisms.
Later Contributions and Legacy
James Watson: Even though later in his life, Watson was suffering from serious mental
illness he was still able to contribute more to science and education especially in the field
of history of the Human Genome Project. Apart from that, he wrote a book “The Double
Helix” telling about the discovery of DNA from personal point of view.
Francis Crick: Crick was curious with other fields much, much later in his career but he
wanted to spend some time to comprehend the notion of consciousness and how it
operates in the brain. He stayed at the Institute in La Jolla, California until his death in
2004 at the Salk Institute for Biological Studies.
3. Major Biomolecules
Proteins
Structure
Proteins, large molecules that are indispensable to the existence of any living creature,
are constructed from globular protein subunits which have several structural varieties. Because
of the intricacy proteins hold, they possess four major levels of protein structure they include
first, second, third and fourth level of protein structure. The primary structure can as well be
assimilated to straight-forward chain where the molecules are arranged in a line by other
molecules showing sequence position of the amino acids. This is the secondary structure and it
determines how certain sections of the protein fold over each other locally in the formation of the
α-helices and the β-sheets which are joined by hydrogen bonds. Tertiary structure generally
corresponds to the overall three-dimensional positioning of a single polypeptide by way of the
side chains bearing amino acid.
Functions
Macromolecules, proteins specifically have critical duties in being structural molecules,
catalyst, mediators, indication of the shape of a cell or organelle and as carriers. These are halve
proteins called enzymes that lower the activation energy of fundamental processes such as dna
synthesis in the replication process of DNA . Some are structural; these comprises of collagen
that provide the needed framework and support to most of the tissues and organs they are present
in. Insulin and other molecules are able to cross the connections, and pass signals from one cell
to another in the body that it regulates, maintaining the balance and coordination of
developmental events between the cells.
Carbohydrates
Types
Cabohydrate is an organic compounds made of carbon hydrogen and oxygen and it is also
categorized into monosaccharide, disaccharide and polysaccharide. For instance, there have
glucose, fructose and so on; these are categorized as monosaccharides since they are made with
just one saccharide. Formation of disaccharides occurs when two monosaccharides combine:
Sucrose is an example of the formation of this product when glucose is linked to fructose; when
glucose is linked to galactose then one gets lactose. While some other carbohydrate foods
contain both starch and glycogen, polysaccharide does transport monosaccharide units that are
chained with one another in a long chain in the body.
Functions
Carbohydrates play significant roles, which include energy storage and as structural
framework in the human body. In animals galycogen is also another form of energy storage as
well as in plants in the form of starch which is composed of glucose and can be broken to yield
free glucose to be used as energy. On a functional level, it helps support the biophysical supply
provision of plant cell walls with Carbohydrate such as cellulose.
Lipids
Types
Lipids are generally described as chemicals that are insoluble or have low solubility in
water but are soluble in non polar solvents, and be subdivided into, triglycerides, phospholipids
and steroids. Triglycerides store energy material in the adipose tissues; phospholipids serve as
the basic component of cellularity membranes. Lipids including cholesterol and steroids are
implicated in several physiological activities in human beings with a specific reference to the
Testosterone hormone.
Functions
They are involved in many metabolic activities such as in the production of energy,
formation of cell membranes and also as signals for hormones. At the opposite extreme,
triglycerides contain energy density in fats for fat tissues. It functions as highly concentrated
metabolic energy. Phospholipids are involved in membrane formation and formation of the lipid
BI layer which helps in the partitioning of the contents of a cell and as a ‘traffic light’ to direct
the passage of items. The steroid hormones are active as secondary messengers in biochemical
information processing involving metabolism, growth and reproduction processes.
Nucleic Acids
Types
Examples of nucleic acid include: Its two most basic forms include: DNA
(Deoxyribonucleic Acid) and RNA (Ribonucleic Acid). DNA is the three dimensional molecular
structure that holds entire genetic code in the form of nucleotides sequence and RNA molecule
has roles in process of protein synthesis and gene regulation.
Functions
These types of nucleic acids are widely used because they are involved in the storage and
transfers of genetic data. Within each cell, there is a genetic blueprint in а particular type of
molecule called DNA, which contains all the information needed for the growth, metabolism,
and reproduction of living organisms. Some of the functions of such RNA may include mRNA
which is involved in the transcribing of a certain section of DNA and transports the genetic
information to the ribosomes where proteins are formed, tRNA and rRNA that are involved in
the synthesis of proteins. Such processes are important in deciding genetic traits in an organism
and also in passing on of similar traits to the next generations
4. Enzymology
Enzyme Structure and Function
Enzymes are biochemical agents of excuse me biochemistry, and in most cases they are
proteins. This can be attributed to their threedimensional overall architecture, topographical, and
chemical features that enable them to interact and target or position a specific reaction in living
organisms. To illustrate the functioning of enzymes, they bear an area on their structure that is
referred to as the active site, where substrates fit to develop a product recognized as the enzyme-
substrate complex. In catalysis where the complex transforms substrates to products, this
complex gets involved in this process.
The fact is that both the enzyme’s active center and the substrate are usually similar in
shape and have similar chemical properties. The fine-tuned changes are possible either in the
active site of the enzymes or in the whole enzymes to enhance the catalytic proficiency of
enzymes. Understanding the relationship between structural characteristics and functional roles
of enzymes is necessary in reconstructing the roles of enzymes within cells and enabling the
development of new therapeutic techniques for enzyme deficiency disorders.
Enzyme Kinetics
This is the area of enzymology that deals with enzyme velocities or the rate at which
enzymes facilitate a given reaction and is known as enzyme kinetics. Onmenschen kinetics is
another famous model that was introduced to enzymology to explain slope of relationship
between the amount of enzyme and the concentration of the substance it acts on. Km is the
maximal rate at which half of the reaction is inhibited with the Vmax which is set down for the
optimally suitable substrate concentration. It is used in the determination of convenience of the
enzyme and it is signified by the constant Km; the lower the value the better. Vmax, on the other
hand, refers to the maximum rate of enzyme catalysed reaction whereby the enzyme- substrate
complex is in a scenario where all the active sites are occupied by a substrate. Appreciation of
enzyme kinetics can facilitate the qualitative and quantitative assessment of the efficiency of the
enzyme, and the specificity for the substrate besides the other related factors when forming the
enzyme-substrate complex as crucial in the development of therapies and drugs based on
enzymes.
Enzyme Regulation
This ensures that within cells, enzymes are regulated to suit the needs of the cell so that
there is an excellent metabolic feedback mechanism and a means of coping with the
environment.
Here the control of enzyme activity is discuss and the effects of changes in the environment in
enzyme behavior is outlined. Hence with regards to the regulation of the modulation,there is the
ability to regulate through inhibition as well as allosteric regulation. They interact with enzymes
and can either modify the reaction in a simple way or even approve an enzyme’s effectiveness,
depending on whether it forms a link with it reversibly or irreversibly. To be more precise:
competitive inhibitors can bind and retain the position of the substrate in the active site;
therefore, noncompetitive inhibitors exist at other sites called the allosteric sites which alters the
shape of the enzyme and reduces its capability to facilitate the reaction. This is through the
interaction of regulator molecules with glycogen phosphorylase, on sites that are not active and
then gets to change its form to the active form. This allows for Mrp14 to act as a moderator of
metabolic reactions and or the regulation of the activity of the enzyme within a certain range and
this is according to the cellular requirements or signals as provided.
Applications
The use of enzymes is extremely large in diagnosis of clinical diseases; enzymes are also
utilized in industries. These enzyme assays are some of the diagnostic tests that are employed in
identification of diseases; mostly there are particular enzymes to indicate the activity of an organ
or tissue, or the existence of disease in the tissue in question. For example, Refractometer,
Alanine Transaminase (ALT) and Aspartate Transaminase ( AST) are usually employed in order
to evaluate liver function within the context of the LFTs. This holds true because enzymes are
typically used in processes such as brewing, cheese making, biofuel production etc. , since they
are catalyst which will ensure that the aimed biochemical reactions take place in the best way.
There are two major challenges to use enzyme technology to satisfy the public demands that still
concern biologics manufacturing and bioremediation.
METABOLISM
Key Metabolic Pathways
Glycolysis:
It is one of the pathways in cell cytoplasm forming glucose into two pyruvates before
entering glycolysis. This is one of the glycolytic process in the oxidation of one glucose
molecules to two pyruvate or lactic acid molecule. During this process ATP 3rd/ NADH energy
in the form is created then can be utilized by the cell in different energy metabolic pathways.
Krebs Cycle (Citric Acid Cycle): Citric acid cycle or Krebs cycle is another cycle occurs in the
mitochondria as the name suggests.
It is also referred to as the citrate cycle or tricarboxylic acid (TCA) cycle and is an
oxidative process that occur in the mitochondria . This also includes a system of reactions that
employ enzyme to oxidatively turn acetyl CoA that occurring from pyruvate or fatty acids into
ATP, NADH, FADH2 and some carrier that are markedly used in the oxidative phosphorylation
process.
Oxidative Phosphorylation:
Oxidative phosphorylation is the last stages of aerobic cellular respiration which occurs
in inner mitochondrial membrane. One of them is an electron transport passage through the
electron transport system where electrons from the NADH and FADH, produced through
glycolysis and Krebs’ cycle. Such processe creates proton gradient through using oxidative
phosphorylation to produce ATP by proton conductance via ATP synthase.
Photosynthesis
In photosynthetic organisms such as plants, light-energy photosynthesis is the process of
transducing the light energy into chemistry processes that produce the energy-storing molecule,
glucose. This metabolic pathway occurs in chloroplasts and involves two main stages: that is,
the photo synthesis which entails light-dependent reaction and the second process known as
Light-independent reactions, or commonly called Calvin cycle. Photophosphorylation is similar
to photolysis in which light energy is also utilized and water molecules are decomposed to
release oxygen and ATP along with NADPH which is synthesized for the Calvin cycle which is
used to fix carbon dioxide and synthesize glucose. .
Regulation of Metabolic Pathways
It is observable that metabolic regulation processes follow pathways which are correct for
the cell, ensuring homeostasis and coming up with useful gear as well as developing required
products in accordance to the circumstances. Regulation occurs through various mechanisms,
including:
Feedback Inhibition: Here, the species’ action is simply slowing down the rate at which
the metabolic process occurs by blocking the enzyme molecules. The second site
provides the excess of product to attach to the enzymes in order to halt them from
overstimulating the production of the product.
Allosteric Enzymes: The allosteric enzymes are the ones which are affected by the
conformation alteration when particular molecules fundamentally interact with the
enzyme but do not combine at the active site but instead at the other sites. This changes
the structure of the enzyme and subsequently the capability for further reactions to take
place and is thought to be a regulatory process in metabolic sequences.
Hormonal Control: Mainly or to a great extent hormones play role in the rate of
enzymatic reactions and the concentration of substrates in a metabolic reactions
sequences. For example insulin favour takes glucose transport and storage by cortical
liver cells and muscles to reduce blood sugar levels.
GENETIC BIOCHEMISTRY
DNA Replication
Replication of DNA can be classified as one of the most significant sub subjects of the genetic
biochemical process that plays a very crucial role in order to replicate the formation of genes to
the next generation. The new synthesized one is of two types one is the old strand while the
other is the new synthesized strand of the DNA molecular is of two types. Several key enzymes
and proteins are involved in DNA replication: Among the first enzymes, and proteins, which
have been identified to play role in the process of DNA replication ara as follows:
Helicase: They unwinds and separates two compacted strands of the double helix DNA
into what is referred to as a replication fork, to allow synthesis of DNA.
DNA Polymerase: Actualization during synthesis of DNA during the process of
replication is characteristic of the DNA polymerases; these enzymes are connected with
the process of nucleotide pairing. These are found in Template strand, need a primer to
start of synthesis and DNA synthesis in only forward at 5’ end.
Ligase: Helps join these same small pieces of DNA with the help of its own enzyme that
was involved in cutting or breaking the DNA between Okazaki fragments in the lagging
strand and joining these pieces will large with greater continuable length. The exercises
of these enzymes is synchronize and tempo so that high rates and accurate replication that
is of importance in cell division and DNA stabilization.
Transcription and Translation
These are two broad processes, and both are involved in build up in new proteins as well as
enzymes from the gene translations.
Transcription: During the transcription process, RNA polymerase attaches itself to the
DNA template strand and uses ribo nucleotides patterned after the rules for good base
pairing to form a new mRNA molecule that is an exact replica of the DNA nucleotide
sequence. While untranslated, it is in the nucleus and after becoming a part of
translation process it goes to the ribosome of the cytoplasm as this has the code for future
protein which is to be synthesized.
Translation: Translation as the process where information of the mRNA transcript is
read to from the particular protein []. This takes place in the endoplasmic reticulum
where aminoacyl-tRNA molecules get transported by special carrier tRNA which has
sequences of nucleotides as per the message of mRNA molecule. It also supports
formation of the peptide bonds between the two successive amino acids, sequencing to
form chain as directed in the sequence on the mRNA.
For this purpose both the transcription and the translation processes are tightly controlled so that
any changes that may be needed should now be made to make sure that the biomatrix
instructions can be read as well as effectively implemented by the cell.
Genetic Code and Mutations
It refers to the ability to read instructions within DNA and translate it into creating all manner of
protein and it is in this same context the term genetic code is used to mean regulations. It is
made of codons which are the tro ternary nucleotides of mRNA that code for a given amino acid
or a stop codon which mean translation has coming to an end.
Somatic changes are mutations of the sovng sequence in the DNA molecule, which alters the
genes hence, protein manufacture.
Point Mutations: The first mutational type is point mutations, and this type of mutation
is an exchange of a single nucleotide located in the DNA sequence. Occasionally they
can also differ with regard to position since position and type of the substitution indicate
what type of modification point mutation is capable of introducing in the functioning of
the protein.
Frameshift Mutations: These mutations are realized by one of the mechanisms
concerning the solid change of the frames of nucleotides through the inserting/deleting of
certain intervals in the DNA sequence. This must cause a shift of the position of the
amino acid sequence and may cause production of nonfunctional or truncated proteins.
CELL SIGNALING AND COMMUNICATION
Signal Transduction Pathways
Epistasis is the changes in the complex patterns of relay by which cells convey and
interchange information on the exterior environment and stimuli to initiate and synchronize
cellular activities and processes. These pathways involve several key components:This basic
element of path analysis comprises of the followings; pathways, causal relationship as well as
other possible mediating factors.
Receptors: Membrane receptors can be classified either as transmembrane receptors
which are surface receptors located either in the external part of the cell membrane or in
the internal cell part, and intracellular receptors which behave as only interacting
molecules like hormones or growth factors. When the ligands are bound in the
receptors, the conformation of the receptor alters, so that other other intracellular
activities or signal cascades can begin next.
Second Messengers: Second messengers are small molecules or ions that amplify the
message which possess receptors and are located at the cell surface of the target structure
related to a cell and create copies of the message to transmit it further. Other examples
of second measengers is cyclic AMP commonly known as cAMP, calcium ions, which
are commonly known as calcium ions/ Ca^2+, and inositol trisphosphate which is
commonly known as IP3. Kirkland mentioned that it can activate or inhibit effector
proteins Upon receiving the signal, it can either amplify it or decrease it depending on the
set goal.
Examples of Cell Signaling
Hormonal Signaling:
Deliver hormones to target cells within the endocrine signaling chain as components of a
signal transduction mechanism. A case in point is the insulin homeostasis which occurs through
insulin signaling that involves the other signals. Whenever there is an accumulation of this
glucose within the stream of the blood, then Insulin – a peptide hormone is secreted from the
pancreatic β-cells and bonds to the insulin receptors that are situated at the surface of the target
tissues, which are the muscles and subcutaneous adipose tissues. This binding triggers series of
signaling within the cell that use glucose and move glucose both within and out of the blood and
also reduced the high levels of glucose in the blood and at also helping to store glucose for
energy.
Neurotransmitters:
Neuro-transmitters are characterized as chemical substances that are produced by the
neurons for relaying information from one cell to another across the synaptic cleft with other
forms of target cells inclusive of the neurons, muscles or gland cells. Acetylcholine is released
from the presynaptic neurons and it combines with Nicotinic receptors that are present on the
postsynaptic membrane of muscle cell and this action potential of the muscle mass and
contraction occurs. Neurotransmitter signaling is one of the signaling methods that originate at
the neurons and mandatory to convey signals, synaptic transmission and the working of the
nervous system.
Techniques in Biochemistry
Biochemistry can be defined as a specialty within biology, and, in my view, it is a field of
biology that does not include structural, functional, or even non-functional analysis of
biomolecules using multiple methods. Some of the methods include spectroscopic analysis
techniques used in analyzing samples, molecular biology procedures and techniques, and
different protein analysis assays among others because they help in showing the outcome of
biochemical processes.
Spectroscopy and Chromatography
UV/Vis Spectroscopy: UV/Vis spectroscopy is fairly described as a type of atomic
absorption spectroscopy – the spectral method which enables to determine the intensity of
radiation which is a part of ultra-violet and visible light spectrum absorbed in bioanalytes.
UV&Visible Spectroscopy is very paramount in establishing concentration of biomolecules as
the sample shall have a different absorbance property. Some of the Techniques employed in
UV/V are:
Spectroscopy: • Quantifying stock solutions of nucleic acids, protein concentrations and
other molecules in biochemistry assays.
Mass Spectrometry: Maltemetry is a relevant analytical method for the characterization
of all industries and scientific disciplines and the mass-to-charge ratio in analyzing large
biomolecules. For instance, in biochemistry, ‘mass spectrometry’ is used for
identification of proteins, determination of peptides and identifying bodies in the samples
of sediments of biological nature. This can justify its improved capacity in revealing the
form and organization of macromolecules and lipid bilayers besides of proteins together
with nucleic acids.
Chromatography: Chromatography is such a general technique of separation and may
be employed when it comes to separating and analyzing molecular biological classes of
commodity. Some of these techniques employed in biochemistry are quite similar to the
techniques being employed in other sub-disciplines of biochemistry while focusing
mostly on high performance liquid chromatography, gas chromatography and thin layer
chromatography which are commonly applied in purification and evaluation of
metabolites and for studying protein-protein interactions respectively. The techniques of
chromatography help scientists to draw out and analyze biomolecules by their ability to
act in certain conditions dependent on one property, for example, size or charge or ps
polarity.
Molecular Biology Techniques
Polymerase Chain Reaction (PCR): Every researcher has his/her own perception of PCR,
although all the majority of researchers believe that PCR is the best invention compared to all the
inventions that have been made in molecular biology due to its capability to amplify the target
segment of a DNA exponentially. To be specific, it allows the researcher to produce millions of
copies of the particular region of interest from only a fraction in the attogram range of the initial
material. PCR in diverse in many aspects of biochemistry such as; gene cloning, testing an
organism, testing for gene deficiencies, and determining the sequence of DNA.
Gel Electrophoresis: One of the simplest pcccproccs that is employed to discourse
matter that has different velocities concerning size and charges of molecules used in
separating DNA, RNA and proteins in options. Whereas in the agarose gel
electrophoresis the sample load is separated according to the size of the DNA that is
present in that sample on the other hand in the polyacrylamide gel electrophoresis the
sample is separated by the size as well as charge of the sample more so most probably the
sample could be a protein. Sequencing in molecular biology, and typing as well as
analysis of the proteins in gel electro phoresis are two of the outranked functions in gel
electrophoresis.
DNA Sequencing: This is a process of determining sequences of nucleotides concerning
molecules. Sequencing can be done in various approaches or strategies, any of which can
be used depending on the need and preferences of the researchers involved. For
instance, it was instrumental in providing solutions to the medical biological problems
among them; Decoding the DNA skeletons, identifying mutations, ‘gene mapping’ and
‘genome mapping’. Sustained enhancement in the lifestyle has equally helped the
progression of the biochemistry via an example the NGS that has enabled speedy and
cheap sequencing of genomes and transcriptomes.
Protein Analysis
Western Blotting: The common technique to look for proteins is the Western blotting
also known as immunoblotting which is actually a process to identify proteins in a sample
containing a number of biological components.
Immunoblots: This is the method involving the solubilization of the proteins in poly
acrylamide gel and then blotting of the proteins to nylon or nitrocellulose membranes
where antibodies to the particular antigens of interest react with them. Such is among
the general methods used in quantifying and differentiating such substances as protein in
Biochemistry, not to mention explaining protein- protein interactions.
Enzyme-Linked Immunosorbent Assay (ELISA): In simple terms, ELISA stands for
enzyme linked immune sorbent which is a mechanism of increasing the ability to
measure either high or low concentrations of antigens/antibodies in the sample in a
biochemical context. The identification is done using antidigoxin-antibody coated red
cells, digit agglutinin coated cards and the agglutination is detected by enzyme linked
antidirigustin-enzyme conjugate. In biochemical analysis in the field of biomedicine it is
important in clinical assays, quality indicators and concentrations of proteins, hormones
or cytokines using ELISA.
X-ray Crystallography: X-ray crystallography remains one of the most popular methods
in the determination of macromolecule structure and, most importantly, in achieving
atomic resolution on proteins. This is achieved in a way that a concentrated and clarified
protein into crystals so that it would be possible for the three dimensional position of the
atoms in a particular crystal to be assessed using X-ray crystallography. Consequently,
the X-ray crystallography strategically aids the biochemistry as well as the structural
biology categorization in the protein structure functionality, ligands, and drug.
Applications of Biochemistry
A wonderful example that fearlessly illustrates the phenomenon of the closer integration
of science into life is biochemistry, the science of life of the present age, which studies life on the
molecular level, Without exaggeration, it is possible to say that it makes an inestimable and
incomparably great contribution to the modern achievements in medicine, agriculture, industry,
the preservation of the environment, etc.
Medical Applications
Disease Diagnostics: Diseases diagnosis using molecular diagnostics and biochemistry
entails using disease biomarkers such as diabetes, cancers and cardiovascular disease,
condition that is characterized by identifying and or measuring the disease biomarkers.
As one of the key uses of biomarker assays, the goals are to screen for diseases, assess
the probable pathways, and monitor the progression in diseases to create early
intervention and control.
Drug Development: In protein or enzyme structure, diseases causative factors or cells
functions that lead to diseased state are made known or identified agents for certain
diseases are found. In other words, through selective hits of biochemicals that
researchers associate with causing diseases, it becomes possible for them to embrace new
drugs with high potential for effective treatment and minimal liability.
Personalized Medicine: Biochemistry underpins the molecular diagnostics or the
conventional concept of personalised medicine that prescribes differential management of
patients, including the interventions, depending on the patient’s genotype, molecular
phenotype, and the external milieu. These techniques are used in appreciating the
connection between genetics and the proteins that are associated with drug effects and
risks for certain diseases while aiding in how to develop the most appropriate way of
handling diseases in individuals.
Agricultural Applications
Genetic Modification: Biochemistry plays a role in changing the nature of crops in the
agricultural sector toward welcoming characteristics that can include insect and disease
repellent and any other climate that people desire. This means that through
biotechnology various good genes can be inserted to crop plants to make crops to mature,
contain better nutritive values as well as disease resistance among other desirable
qualities all of which are attained without having to resort to the usual practice of
planting.
Pest Control: Areas of pest management include using biochemical factors such the
regular synthesis of biopesticides and biocontrol agents which involve specificity on the
course of biochemical activities of the pests. Biopesticides comprise pests’ natural foes
and are considered ideal in as much as ecological effects of the products it is formulated
with do not apply negative impact on the environment and the variability of the bio pests.
Crop Improvement: In the regulation of metabolic rates, nutrient intake, and the ability
to withstand the stress, there is a combination of the biochemical strategies in the crops.
By understanding how organ size and maturation, and high from stress reaction hormones
control the plant, there is potential for genetic improvement of selected food crops or
plants to be larger and with higher nutritional qualities, disease and environmental stress
resistances from climate change.
Industrial Applications
Biotechnology: Due to the development of new technologies and use of such
fundamental life processes to deliver desirable products like bio fuels, biopharmaceutical
and biodegradable products which constitute the bio technology industry is considered.
Processes like fermentation and enzyme in bio processing are applied to produce valuable
chemical and material from feed stock rather than fossil fuel to increase the efficiency of
a bio based system.
Food Industry: This is common in the food industry where biochemical reactions,
catalyzed by enzymes, improve the quality, taste and shelf-life of foods. In cheese-
making or brewing for instance enzymes are applied in production procedures that meet
some or all of the following requirements: texture, digestibility and nutritional value of
foods triggered by pressures for healthier / or natural foods.
Environmental Sustainability: Biochemistry’s environmental responsibility is paid off
through the technologies that Biochemistry develops in order to reclaim the polluting
materials to reduce the polluting effect. Microorganisms produced by informations from
synthetic biology can contribute for the degradation of toxic chemicals, polluters, and
industrial wastes, proving renewable ways to solve the issue of the environment and
waste management.
Future Directions
Emerging Research Areas
Epigenetics: CpG dynamics fall under the conglomerate known as epigenetics which in
fact deals with how modification of genes chemically influences the ‘read out’ of those
genes to shape cell development, differentiation and pathobiological processes.
Epigenetic mechanisms and their control have the potential of the current-day
management therapies and objective treatment regimens.
Proteomics: One of the goals of proteomics is associated with the visualization of
individual protein around cells, tissue and organ isms, and the structural features of the
protein as well as functions and interactions. The advancement of the various
technologies especially in mass spectrometry and bioinformatics for data analysis
overimproves the high-throughput proteomics to enable discovery of biomarkers and
therapeutic targets in various human diseases.
Metabolomics: This is also known as metabonomics, is defined as the systematic study
of perturbation and response of endogenous small molecules called metabolites from
cells, tissues, and/or body fluids and they reflect the net integration of an organism’s
metabolic processes. Hence, analysing metabolites allows for identifying the so-called
proof of agency, which would help point to useful evidence on various metabolism
routes, diseases, and reactions to medications and food products, for using precision
medicine and creating a personalised nutrition plan.
Technological Advances
CRISPR and Gene Editing: In bioengineering, a microtechnique that lets for the shift of
sequences in organism, CRISPRs has changes the concept of genome engineering.
CRISPR/Cas systems for gene editing are unmatched in terms of specificity, efficiency,
and versatility and the potential applications are therapeutic, basic research and
agriculture.
Synthetic Biology: Synthetic biology is essentially an endeavor that utilizations
engineering principles to fashion novel biological elements and assembly for explicit
functions. This functionalism is achieved through synthetic biology where the
bioscientists use microorganisms, cells and circuits to enable the development of various
applications such as biosensors, bio-fuels and biocompatible materials that are used in
industries, medicine and environment among others.
Global Health and Environmental Impact
In every fight against challenge, biochemistry IS A MUST which has been elaborated by
Mankind Hence various fights, pandemic, climate change, and deteriorating environment. In
developing antibodies, treatments for illnesses, and disease avoiding strategies, means of
sustaining life and subsistence, chemists endeavor to make individuals hale and hearty, attempt
to reclaim the earth from the harms done by people, and advance the general standard of living in
this planet. The interactions between the disciplines are essential to ensure that the biochemistry
can make the best use of the contributions aimed at providing solutions to the contemporary
issues and establishing a healthier world.
In Conclusion
Biochemistry explicitly reveals itself as a discipline absolutely vital for scientific
community as well as interdisciplinary practices that connect the study of the world with the
improvement of people’s lives. Finding its ground in the biomolecular interactions and metabolic
pathways, it not only provides the tippler for a number of significant areas including medicine,
agriculture, industry, and environment sustainability but also advances them with new learnings
and technology. In diagnostics of diseases, in design of new medicines, through genetic
engineering, application in bioremediation, nothing that is part of the contemporary world is free
from the flexion of biochemical science; solutions to global problems; new frontiers of science
explored everyday. Biochemistry wakes up with comprehensive strategies to face the vagueness
of the future and continuously works towards making the world a healthier place for humanity
and the living things for centuries to come.
