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3.4.17.2: carboxypeptidase B

This is an abbreviated version!
For detailed information about carboxypeptidase B, go to the full flat file.

Word Map on EC 3.4.17.2

Reaction

preferential release of a C-terminal lysine or arginine amino acid =

Synonyms

47 kDa zymogen granule membrane associated protein, aCAP, B carboxypeptidase, basic carboxypeptidase, carboxypeptidase B, Carboxypeptidase B1, carboxypeptidase B2, carboxypeptidase BII, Cbp, CPB, CPB1, CPB2, CPBAg1, cpbAs1, EC 3.4.12.3, EC 3.4.2.2, HBCPB, HzCPB, More, Pancreas-specific protein, PASP, PCB, PcpB, pp-CpB, ppCPB, protaminase, TAFI, thrombin-activatable fibrinolysis inhibitor, thrombin-activatable procarboxypeptidase B, tissue carboxypeptidase B, ZAP47

ECTree

     3 Hydrolases
         3.4 Acting on peptide bonds (peptidases)
             3.4.17 Metallocarboxypeptidases
                3.4.17.2 carboxypeptidase B

pH Range

pH Range on EC 3.4.17.2 - carboxypeptidase B

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pH RANGE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
4 - 11
-
high loss of activity below pH 6.0 and above pH 10.0
5.5 - 9
-
pH 5.5: about 60% of maximal activity, pH 9.0: about 30% of maximal activity
6 - 10
-
pH 6: about 60% of maximal activity with carboxypeptidase B I, about 50% of maximal activity with carboxypeptidase B II, pH 10: about 70% of maximal activity with carboxypeptidase B I, about 60% of maximal activity with carboxypeptidase B II, cleavage of hippuryl-L-Arg
6 - 9
-
about 40% of maximal activity at pH 6 and 9, soluble enzyme and immobilized enzyme
7 - 10.5
-
pH 7: about 45% of maximal activity with carboxypeptidase B I, about 30% of maximal activity with carboxypeptidase B II, pH: 10.5: about 90% of maximal activity with carboxypeptidase B I, about 80% of maximal activity with carboxypeptidase B II, hydrolysis of hippuryl-L-Arg
additional information