ENZYME SPECIFICITY

Question 1

Such specifi city means an enzyme will catalyze a particular
reaction for only one substrate. This most restrictive of all specificities is not
common. Urease is an enzyme with absolute specificity

Answer 1

Absolute Specificity

Question 2

Such specificity involves a particular type of bond, irrespective of the structural features in the vicinity of the bond. Phosphatases hydrolyze phosphate– ester bonds in all types of phosphate esters. Linkage specificity is the most general of the specificities considered.

Answer 2

Linkage Specificity

Question 3

Such specificity means an enzyme can distinguish between stereoisomers. Chirality is inherent in an active site, because amino acids are chiral compounds. L-Amino-acid oxidase will catalyze reactions of L-amino acids but not of D-amino acids

Answer 3

Stereochemical Specificity

Question 4

Such specificity involves structurally similar compounds that have the same functional groups. Carboxypeptidase is group-specific; it cleaves amino
acids, one at a time, from the carboxyl end of the peptide chain

Answer 4

Group Specificity