Which of the following groups of amino acid side chains is M

Which of the following groups of amino acid side chains is MOST LIKELY to be positioned into the active site of an enzyme that binds glucose as a substrate? Gln, Asn, Ser Val, Leu, lle Trp, Phe lle Val, Glu, Lys Cys, Met, Pro Which of the following statements regarding amino acids is/are false? Thr and Cys may be phosphorylated. The side chain of the amino acid histidine usually acts as a base at pH 7.0. Arg contains four nitrogens. A and B All of the above statements are false.

Solution

1. Which of the following groups of amino acid side chains is Most likely to be positioned in the active site of an enzyme that binds glucose as a substrate?

Answer: (A) Gln, Asn, Ser

2) Which of the following statements regarding aminoacids is/are false?

Answer: (E) All of the above statements are false.

(A) Thr and Cys may be phosphorylated – True.

(B) The side chain of the amino acid histidine usually acts as a base at pH 7.0 – True.

(C) Arg contains four nitrogens – True.

(D) A and B – True.

(E) All of the above statements are false – False.