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Question Set Two

(a) How many sulphur containing amino acid residues are present in carboxypeptidase-A?

(b) How many of these are cysteines?

(c) What are the others?
(d) Are the cysteines located far apart in the primary amino acid sequence and do they come close enough together in the tertiary structure to form a disulfide bridge?

(e) If so, is the disulfide bridge intermolecular or intramolecular?
Intermolecular
Intramolecular

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