Name the GREEN structure of the tRNA Variable loop D-loop Anticodon loop Pseudouridine loop
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- draw the structure of the peptide Asp - Asn-Ser-Lys-Pro at PH 8Given the structures of the ribonucleotides as (shown in Image A) and deoxyribonucleotides (as shown in Image B), Draw the structure of the polyribonucleotide UAGCCUG and the structure of thepolydeoxyribonucleotide CGTAGAT.Draw the structure of the following nucleotide: adenosine 3'-monophosphate or guanosine 2-monophosphate
- draw the structure of the tripeptife Pro-Ser-Cys as it would appear at physiological PH with its C-terminal amino acid residue protected as its methyl esterDraw the structural formula for the pentapeptide segment being synthesized. (Val-Thr-Arg-Pro-Glu) Describe the attractive forces that the amino acid residue on the c-terminus might engage in.Draw the molecular formula of the covalently modifi ed histone side chain of acetyllysine. How does this modifi cation alter the chemical properties of the side chain?
- Ornithine is structurally similar to lysine except ornithine’s side chain is one methylene group shorter than that of lysine. Attempts to chemically synthesize and isolate ornithinyl-tRNA proved unsuccessful. Propose a mechanistic explanation. (Hint: Six-membered rings are more stable than sevenmembered rings.)A picture of the two disaccharide repeats of hyaluronic acid are shown below. Name the two different glycosidic linkages. Are these the same linkages as those found in glycogen?Draw the structure of the α-keto acid formed by the transamination of each amino acid: (a) tyrosine; (b) asparagine.