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3.4.11.B4: Pyrococcus horikoshii deblocking aminopeptidase

This is an abbreviated version!
For detailed information about Pyrococcus horikoshii deblocking aminopeptidase, go to the full flat file.

Word Map on EC 3.4.11.B4

Reaction

The enzyme exhibits aminopeptidase activity and with lower efficiency deblocking activity (i.e. hydrolysis of acetylated amino acids from the N-terminus of peptides). The turnover number with Ac-Ala-Ala-Ala is 260-540fold lower compared to the activity with Ala-Ala-Ala. The turnover number with Ac-Ala-Ala is 350fold lower compared to the activity with Ala-Ala. Low hydrolytic activity for peptide substrates longer than 10 residues. The enzyme is activated by Co2+ or Zn2+. Contains 1.32 mol of Ca2+ per mol of monomer. =

Synonyms

DAP1, DAP2, DAP3, DAPPh, DAPPh2, DAPPh3, deblocking aminopeptidase, PH0519, PH1527, PH1821

ECTree

     3 Hydrolases
         3.4 Acting on peptide bonds (peptidases)
             3.4.11 Aminopeptidases
                3.4.11.B4 Pyrococcus horikoshii deblocking aminopeptidase

Temperature Range

Temperature Range on EC 3.4.11.B4 - Pyrococcus horikoshii deblocking aminopeptidase

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TEMPERATURE RANGE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
80 - 110
80°C: about 50% of maximal activity, 110°C: about 70% of maximal activity
85 - 110
85°C: about 40% of maximal activity, 110°C: about 90% of maximal activity
85 - 98
85°C: about 35% of maximal activity, 98°C: about 85% of maximal activity