Proteins are often regulated by phosphorylation/dephosphorylation reactions. What amino acid residues can be phosphorylated?

Q: How is the activity of an allosteric protein modulated?

A: Proteins are the building blocks of cells and play crucial role in physiology due to the involvement…

Q: Under what conditions will an amino acid have ä PKa

A: Amino acids are organic compounds consisting of carbon, nitrogen, hydrogen, and oxygen along with…

Q: Relatively hydrophobic proteins will require higher amounts of (NH4)2SO4 to precipitate.

A: Amminium sulfate precipitation is a method of protein purification by altering solubility of…

Q: In what type of intra and intermolecular interactions does a valine within a protein backbone…

A: Valine is an α-amino acid containing an α-amino group, an α-carboxylic acid group, and a side chain…

Q: What characteristics of a binding site determine its affinity for a ligand?

A: The binding site is a region where the upcoming molecule like any ligand/substrate (smaller in size)…

Q: Using your best guess, what percentage of the protein is alpha helices? What about beta sheets?…

A: The branched-chain α-ketoacid dehydrogenase complex (BCKDC or BCKDH complex) is a multi-subunit…

Q: Is the OH substituent of the A ring of cholesterol an a-substituent or a b-substituent?

A: In cyclic compounds β- substituents indicated by a solid wedge. So the OH substituent of the A ring…

Q: What happens to the activity of an allosteric enzyme if an allosteric inhibitor binds the alloster…

A: Allosteric mode of inhibition is also called non-competitive inhibition where an inhibitor…

Q: Which of the following statements DO NOT describe the similarity between glycogen and amylopectin? O…

A: Glycogen and amylopectin are polysaccharides which are composed of glucose monomers. These glucose…

Q: Are the amino acid residues at the active site need to be in close proximity to one another…

A: Enzymes are the catalysts that catalyze biochemical reactions. These are proteinaceous in nature as…

Q: How does cell chemistry, and therefore all life, depend on the production of proteins? What role do…

A: Proteins are large-complex molecules that perform complex and critical tasks in all life forms.…

Q: Proteins are damaged for a number of reasons.

A: Proteins are amino acid sequences in which various amino acids are linked by a peptide bond formed…

Q: What characteristics of a binding site determine its chemical specificity?

A: The binding ability of some chemicals with protein in specific ligands is known as chemical…

Q: Can Allosteric Regulation Be Explainedby Conformational Changes in Proteins?

A: Introduction: The enzyme increases the rate of reaction that that occurs inside the living body…

Q: Define residues.

A: A Solution is a homogenous mixture of two or more substances in relative amounts. It is a mixture of…

Q: A tripeptide has the following sequence:    Glu-Trp-Arg What is the net charge of this tripeptide…

A: The given peptide is composed of three amino acids. Peptide composed of three amino acids is called…

Q: Illustrate the pathways to synthesize the following aminoacids:a. glutamineb. serinec. arginined.…

A: Introduction: The macromolecules that contain two functional groups that are amine and carboxyl are…

Q: The metal ion activator of protein phosphorylating enzymes called kinases is: O Magnesium Chromium…

A: Metal ions are needed for the activation of kinases (protein phosphorylating enzymes), to make the…

Q: which subunits make up an amino acid molecule

A: The amino acids are the building blocks of proteins. Amino acids are joined together by peptide…

Q: A protease is an enzyme that catalyzes the hydrolysis of the peptide bonds of target proteins. How…

A: A peptide bond is an amide type of covalent chemical bond linking two consecutive alpha amino acids…

Q: The function of proteins can be regulated in a number of ways. What is cooperativity, and how does…

A: Proteins are massive biomolecules and macromolecules made up of one or more long chains of amino…

Q: All sugar residues are in their D-isomeric forms. What are the three different sugars?

A: Sugar is a general name given to soluble carbohydrates that are sweet in taste and most of which are…

Q: What type of interactions can glutamic acid participate in that are not possible for glutamine?…

A: In a biochemical context, the amino acids glutamine and glutamic acid are strongly connected.…

Q: N-linked glycosylation occurs on residues of proteins. Acidic amino acid residues Methionine Serine…

A: Glycosylation is the process of joining of oligosaccharide or a carbohydrate chain having sugar…

Q: A mutation that changes an alanine residue in a protein to an isoleucine leads to a loss of…

A: The protein folding property of protein makes a major impact on the functioning of amino acids. The…

Q: Proteins are essential to most processes in the human body. Given your understanding of the M phase…

A: Cell Cycle and Phases Of Cell Cycle ---- The ordered sequences of events which takes place in the…

Q: There may be 50 ways to leave your lover, but, in principle, there are only three ways to make a…

A: Glycerol-based phospholipids or glycerophospholipids are made up of the glycerol backbone.…

Q: Tetracycline is used to treat infections caused by bacteria including pneumonia and other…

A: Antibiotics are molecules that help in killing disease causing agents or micro organisms.…

Q: One of the following is false: a. Glycosylated HbA has glucose attached to N- terminal of beta…

A: HbA, also termed as adult hemoglobin, is the common hemoglobin tetramer found in humans. This…

Q: Is the statement "elongation is the process of introducing double bond in fatty acid", correct?

A: Fatty acid Elongation is the process in which  to make fatty acids longer than 16 carbons occurs in…

Q: I'm working on the thermodynamics of protein binding but I want to understand more on the enthalpic…

A: Introduction Protein folding and protein-ligand interaction are basically thermodynamically driven…

Q: Define glycoprotein

A: Proteins, carbohydrates , lipids and nucleotides are the building blocks of any organism . There are…

Q: Acid hydrolysis of polypeptides may lead to complete destruction of tyrosine residues.

A: Proteins and peptides are macromolecules made up of covalently bonded amino acid residues in linear…

Q: To examine: Whether the statement "Loops of polypeptide that protrude from the surface of a protein…

A: Proteins are essential dietary components. It is made up of a polypeptide chain, which is a chain of…

Q: Disulfide linkages are uncommon in cytoplasmic proteins, whereas they are common in extracellular…

A: Oxidation is the most common way for disulfide bonds to form in the endoplasmic reticulum.

Q: How does NH4SO4 affect water structure? What does this have to do with protein solubility? I thought…

A: One of the factors that determine the  solubility of proteins in solution is the concentration of…

Q: What structure deactivates the enzyme that catalyses the following reaction? de de do Per O The…

A: G protein-coupled receptors can be grouped into three main categories namely the Gq, the Gs, and the…

Q: Why do some proteins require molecular chaperones to foldinto their active conformations, whereas…

A: Protein folding is a process by which a polypeptide chain folds to become a biologically active…

Q: The process of protein folding is spontaneous in the thermodynamic sense. It gives rise to a highly…

A: A polypeptide chain becomes biologically active protein in its native 3D structure by the process of…

Q: Branched-chain amino acids are important in metabolic processes for all of the following reasons…

A: Amino acids are generally used to make protein and poly peptide chain

Q: Define phosphodiesterase

A: Enzymes are biological molecules that are a class of proteins except for ribozymes (a class of RNA)…

Q: important biological functions of amino or acid derivatives of sugars?

A: Amino Sugars: These can be defined as a chemical compound which is formed by a sugar backbone in…

Q: Difference between uracil and cytosine?

A: Nitrogenous bases are the molecules which contain nitrogen and act as a base. They are the part of…

Q: Which of the following amino acid residues cannot act as a nucleophile? a. Serine b. Glutamate C.…

A: Amino acids are the building blocks of proteins. They have side chain R groups that are important…

Q: rotein denaturation results in a disruption of the

A: Large and complex biomolecules that are generated by amino acids connected through peptide bonds are…

Q: O-linked glycosylation occurs on ___ residues of proteins. a) Serine and Threonine b) Asparagine c)…

A: The attachment of sugar moieties to protein forms glycoprotein. It is one of the post-translation…

Q: Which of the statements about denaturation are true? Protein denaturation involves cleavage of its…

A: Denaturation of proteins refers to the breaking of non-covalent bond and disulfide bond resulting in…

Metabolic pathways

Metabolism is defined as the group of life-supporting, enzyme-mediated chemical reactions in organisms. A metabolic pathway is a set of these chemical reactions that involve anabolism (synthesis of complex biomolecules) and catabolism (breakdown of biomolecules into small molecules) that occur inside a cell. Metabolites are the reacting substances, products, and intermediate substances of an enzymatic process that are altered by a series of chemical events catalyzed by enzymes.