he nitrogen on the 6-membered ring of a purine comes from A、glutamine B、Aspartate C、glutamate D、fumarate

Q: Write structural formulas for the two dipeptides that contain leucine and aspartate.

A: A peptide is the sequence of amino acids which is joined through peptide or amide bond in which…

Q: draw phosphatidylserine which contains cis-Δ9-hexadecenoate and cis, trans, cis-Δ9, Δ12,…

A: The phosphatidylserine with cis-Δ9-hexadecenoate and cis, trans, cis-Δ9, Δ12, Δ15-octadecatrienoates…

Q: The structure of aspartame, is shown in the following diagram. Label the functional groups. H O H…

A: Aspartame It is an artificial non-saccharide sweetener. It is 200 times sweeter than sucrose. It is…

Q: ATP hydrolysis to make the ________ of glutamine biosynthetically active.

A: Glutamine amidotransferase is an important enzyme that actually functions like the transfer of the…

Q: What are the difference between thymine and guanosine?

A: Thymine is a nucleotide. Guanosine is a nucleoside.

Q: Heparin has what functional groups? what is the chemical reactivity of heparin in respect to its…

A: Heparin is defined as an anticoagulant that helps or prevents the formation of a blood clot in the…

Q: Below, draw a thymine bonded to a guanine in the 5’-3’ direction. In your drawing be sure to include…

A: Thymine is a pyrimidine nitrogen base while guanine is a purine nitrogen base.

Q: Propose a plausible enzyme mechanism for triose kinase, the enzyme that catalyzes the conversion of…

A: Triose kinase, like other kinases, catalyses the transfer of phosphate group from ATP to acceptors…

Q: A disaccharide that is found in dairy products can be formed by the two monosaccharides. Please draw…

A: The organic molecules known as carbohydrates are made up of three elements: carbon, hydrogen, and…

Q: Write the structure of UDP-N-acetylglucosamine and UDP-galactosamine.

A: UDP-N-acetyl (UDP-GalNAc) glucosamine and UDP-(GalNAc) galactosamine are the amino sugar of…

Q: What are some advantages for a glycoprotein in having a large number of N-glycosylation sites?

A: Glycoproteins are a type of conjugated proteins. They have carbohydrates(oligosaccharides)…

Q: How could you make the zwitterion of aspartic acid more soluble in water?

A: A zwitterion is considered as a chemical compound, which has both charges positive as well as…

Q: Why is the structure of ornithine so similar to the structure of citrulline?

A: Ornithine is basically an amino acid that is usually not coded by DNA. Citruline is a non essential…

Q: A seven-residue peptide was found to have an amino acid composition including glu, val, Lys, met,…

A: phenyl thiohydantoin (PTH)- amino acid derivative  The sequence of amino acid for heptapeptide…

Q: Why Ranitidine is better than Cimetidine ?

A: Drug therapy aids in the treatment of various medical conditions by the administration of a drug…