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Information on EC 3.4.13.21 - dipeptidase E

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EC Tree
     3 Hydrolases
         3.4 Acting on peptide bonds (peptidases)
             3.4.13 Dipeptidases
                3.4.13.21 dipeptidase E
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The expected taxonomic range for this enzyme is: Bacteria, Eukaryota
Synonyms
aspartyl dipeptidase, asp-specific dipeptidase, more
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
dipeptidase E catalyses the hydrolysis of dipeptides Asp-/-Xaa. It does not act on peptides with N-terminal Glu, Asn or Gln, nor does it cleave isoaspartyl peptides
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A free carboxy group is not absolutely required in the substrate since Asp-Phe-NH2 and Asp-Phe-OMe are hydrolysed somewhat more slowly than dipeptides with free C-termini. No peptide larger than a C-blocked dipeptide is known to be a substrate. Asp-NH-Np is hydrolysed and is a convenient substrate for routine assay. The enzyme is most active near pH 7.0, and is not inhibited by di-isopropylfluorophosphate or phenylmethanesulfonyl fluoride. Belongs in peptidase family S51
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