#Question id: 178
#Unit 1. Structure and Function of Biomolecules
Given the pKa values of different acidic sites in cysteine, the principal ionic form which will never exist at any pH
#Question id: 179
#Unit 1. Structure and Function of Biomolecules
The average molecular weight of the 20 standard amino acids is 138, but biochemists use 110 when estimating the number of amino acids in a protein of known molecular weight. Why?
#Question id: 180
#Unit 1. Structure and Function of Biomolecules
Which of the following statements about aromatic amino acids is correct?
#Question id: 181
#Unit 1. Structure and Function of Biomolecules
Titration of valine by a strong base, for example NaOH, reveals two pK’s. The titration reaction occurring at pK2 (pK2 = 9.62) is:
#Question id: 182
#Unit 1. Structure and Function of Biomolecules
Which amino acid is least likely to participate in acid-base catalysis?
#Question id: 183
#Unit 1. Structure and Function of Biomolecules
At pH 7.0, converting a glutamic acid to gamma-carboxyglutamate, will have what effect on the overall charge of the protein containing it?