List all the enzymes of nucleotide biosynthesis that use glutamine as an amino group donor.

Q: Bacterial species that are capable of synthesising the amino acid histidine do not need it in their…

A: Introduction Histidine is synthesized from phosphoribosyl pyrophosphate (PRPP), which is made from…

Q: A species of bacteria can synthesize the amino acid histidine, so they do not require histidine in…

A: Feedback inhibition is a mechanism to control cellular activity. The activity of the enzyme is…

Q: PKU Worksheet  Read the following paragraph about a genetic disorder identified as an inborn error…

A: Genetic disorder: When there are single or multiple abnormalities in the genome, it can lead to…

Q: 75. Which of the following represents a physiologically reversible covalent modification of an…

A: Covalent modifications are modifications done to the structure of the protein that is catalyzed by…

Q: What roles do trhioredoxin and thioredoxin reductase play in the metabolism of nucleotide?

A: Nucleotides are individual polymers that are the structural units of nucleic acids. Each nucleotide…

Q: What's the difference between a keteogenic or glucogenic amino acid?

A: Amino acids are the building blocks of proteins . Depending on the immediate products that they…

Q: Three amino acids that donate amine groups for the purine biosynthesis are a) Glycine, glutamine,…

A: Purines are heterocyclic aromatic compound of carbon and nitrogen and forms nucleotides that in turn…

Q: Illustrate the detailed mechanism of the transamination reaction in the active site of an…

A: Transamination reaction involves transfers an amino group to a ketoacid to form new amino acids. It…

Q: Describe the pyrimidine biosynthesis pathway

A: Pyrimidines are the nitrogenous base of DNA & RNA. For DNA , pyrimidines are Thymine , Cytosine…

Q: TRUE OR FALSE a) The electron rich nature and aromaticity of the nucleobases mediates their…

A: Nucleobases are also known as nitrogeneous bases which are  nitrogen-containing biological compounds…

Q: What is the base sequence of the segment of DNA that is responsible for the biosynthesis of the…

A: Transcription Cellular process in which RNA is synthesized using DNA as a template known as…

Q: Which of the following amino acid types is mostly likely to be hydroxylated in a posttranslation…

A: Hydroxylation is defined as a process of oxidation reaction where the carbon-hydrogen bond in the…

Q: What are the allosteric activators and inhibitors of de novo purine and pyramidine biosynthetic…

A: The allosteric regulation is also known as allosteric control. It is the regulation of the activity…

Q: Tazobactam is a BETA-lactam that inhibits the enzyme that bacteria secrete to resist penicillin

A: Tazobactam is a synthetic sulfone of penicillanic acid which contains a lactam ring at beta…

Q: Why is it advantageous for two control mechanisms —allosteric control and covalent modification— to…

A: Enzymes are the proteins which act as a catalyst in chemical reactions. Enzymes never take part in…

Q: Certain glutamine analogs irreversibly inactivate enzymes that bind glutamine. Identify the…

A: Nucleotides are ubiquitous as they are involved in majority of biochemical reactions. All of the…

Q: Lactose permease, a protein of E. coli, is composed of a single polypeptide that is 417 amino acids…

A: Lactose permease Its belong to transmembrane protein family. The transport mechanism of lactose…

Q: Most aminotransferases use which α-ketoacid as their amino group acceptor? A、α-ketoglutarate…

A: Aminotransferases are transferase class of enzymes, which transfer amino group from an amino acid to…

Q: What best describes the relationship between essential amino acids in humans and the number of steps…

A: The body is unable to synthesise essential amino acids. As a result, they must mostly be obtained…

Q: Sydney Brennen isolated Salmonella typhimurium mutants that were implicated in the biosynthesis of…

A: By the use of minimal and deficit medium scientist can characterize different classes of mutants and…

Q: Which of the following would result in the greatest decrease in function of the catalytic triad…

A: Introduction Enzyme mutations, which are produced by inherited anomalies in the affected…

Q: A normal polypeptide and a mutant of the polypeptide were hydrolyzed by an endopeptidase under the…

A: Chromatography is a useful technique to study the separation of amino acids. Paper chromatography is…

Q: Why is selenocysteine called the 21st amino acid when there are many more amino acids found than the…

A: Introduction: The 21st proteinogenic amino acid is selenocysteine. It is an essential amino acid.…

Q: The gene that encodes the enzyme amylase is 750 nucleotides long. The number of amino acids that the…

A: The enzyme amylase plays a crucial role in the digestion of carbohydrates and is encoded by a gene…

Q: What is a proteasome? Why is it important to the proper functioning of the ER?

A: Introduction  Proteins are the essential biomolecules which plays a diverse role. Almost all…

Q: What metabolic substrate is produced from the carbon atoms of each of the following amino…

A: Amino acids are organic molecules which act as the building blocks of proteins.  During the…

Q: What are the fates of carbons from the ketogenic amino acids? And Name three degradation…

A: Amino acids that are converted to acetoacetyl CoA or acetyl CoA are referred to as ketogenic amino…

Q: Within an enzyme active site, how does the aspartate carboxyl group activate the histidine nitrogen…

A: An enzyme is a special class of proteins that catalyze biochemical reactions. Proteolytic enzymes…

Q: Under what conditions might one expect a deficiency of hypoxan- thine-guanine…

A: The deficiency of HGPRT is due to genetic mutation in the HPRT 1 gene present on X chromosone.

Q: Draw the detailed mechanism of the transamination reaction in the active site of an…

A: Transamination reaction involves transfer of an amino group to a ketoacid to form new amino acids.…

Q: How Lactose Metabolism in E. coli Is Regulated ?

A: Escherichia coli can be referred to as bacterium comprising a set of genes that can play an…

Q: the structures of chymotrypsin and other serine proteases revealed that the active sites of these…

A: Chymotrypsin and trypsin are examples of serine proteases. Chymotrypsin cleaves the peptides of…

Q: The M and H subunits of lactate dehydrogenase have very similar sizes and shapes but differ in amino…

A: Introduction: The enzyme is the protein that acts as biocatalysts. Those substances that increase…

Q: Match the enzymatic activity with the proper description within the ubiquitin-proteasome pathway.…

A: Ubiquitin-mediated degradation:          Inside the cell, the degradation of the unuseful proteins…

Q: What is a major difference between the amino acid biosynthetic capacity of prokaryotic organisms and…

A: Prokaryotes are unicellular organisms that have simple functioning and simple structure whereas…

Q: List possible glucogenic products of amino acid degradation

A: Aminoacids are classified into two types based on their fate of conversion to glucose or ketone…

Q: Mutations in the Galactose-1-Phosphate Uridyl Transferase Gene Can you use RFLP to identify this…

A: Mutation --It is an alteration in the sequence of  nucleotides in a genome of an organism , virus…