(10 pts) Match the amino acids in the left column with the appropriate propertie

Question

(10 pts) Match the amino acids in the left column with the appropriate properties in the right column. -(a) Gln -(b) Gly (1) Sulfur-containing amino acid (2) Absorption at -280 nm (3) pKe near physiological pH (4) Amide group-containing amino acid (5) Ca is not chiral (c) Trp (d) His -(e) Cys (10 pts) You want to determine the amino acid sequence of a peptide. Answer the following que a) When the peptide was digested by trypsin (which cuts the carboxyl side of Lys and Arg), th fragments were produced. The sequences of the three purified fragments, determined by the method, were as follows: Thr-Phe-Gly-Arg

Explanation / Answer

Amino acids matched to their properties:
(a) Gln - (4) Amide group-containing amino acid
(b) Gly - (5) C-alpha is no chiral
(c) Trp - (2) Absorption at ~280 nm
(d) His - (3) pKa near physiological pH
(e) Cys - (1) Sulfur-containing amino acid

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