The initial bond formation in the covalent intermediate in the reaction a. serin
ID: 527813 • Letter: T
Question
The initial bond formation in the covalent intermediate in the reaction a. serine and the carbonyl carbon in the peptide backbone b. serine and the nitrogen in the peptide backbone c. histidine and the carbonyl carbon in the peptide backbone d. histidine and the nitrogen in the peptide backbone The active site of chymotrypsin contains all of the following, except: a, Histidine residue. b. A magnesium ion. c. Hydrophobic pocket to bind the substrate. d. Serine residue. The serine in the active site of chymotrypsin functions as a. a Lewis acid. b. a ion. c. an electrophile. d. a nucleophile. Which of the following is not true about B vitamins? a. They are usually fully active in the form we eat them b. They are usually water soluble c. Niacin and riboflavin are examples d. They are important in many metabolic reactions Redox reactions often use this cofactor: a. Riboflavin b. Lipoic acid c. Pyridoxal d. Thiamine e. BiotinExplanation / Answer
12) There is no magnesium ion.
13) Serine serves as a nucleophile by attacking the carbonyl group, thus cleaving peptide bond.
14) Ans (a). They are not in the active forms while we eat.
Vitamins are water soluble and sole purpose is to carry out metabolism.
Niancin is vitamin B3, Riboflavin is B2.
15) Ans Thiamine
thiamine pyrophosphate is used in citric acid cycle as cofactor.
Hope, I was able to help.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.