Hydrolases;
Acting on peptide bonds (peptidases);
Omega peptidases
Reaction(IUBMB)
Hydrolysis of gamma-D-glutamyl bonds to the L-terminus (position 7) of meso-diaminopimelic acid (meso-A2pm) in 7-(L-Ala-gamma-D-Glu)-meso-A2pm and 7-(L-Ala-gamma-D-Glu)-7-(D-Ala)-meso-A2pm. It is required that the D-terminal amino and carboxy groups of meso-A2pm are unsubstituted
Comment
A 45-kDa metallopeptidase from Bacillus sphaericus, the substrates being components of the bacterial spore wall. A member of peptidase family M14 (carboxypeptidase A family). Endopeptidase II has similar activity, but differs in cellular location, molecular mass and catalytic mechanism [3]
Specificity profiles of the membrane-bound gamma-D-glutamyl-(L)meso-diaminopimelateendopeptidase and LD-carboxypeptidase from Bacillus sphaericus 9602.
Purification and partial characterization of the extracellular gamma-D-glutamyl-(L)meso-diaminopimelate endopeptidase I, from Bacillus sphaericus NCTC 9602.
Hourdou ML, Guinand M, Vacheron MJ, Michel G, Denoroy L, Duez C, Englebert S, Joris B, Weber G, Ghuysen JM
Title
Characterization of the sporulation-related gamma-D-glutamyl-(L)meso-diaminopimelic-acid-hydrolysing peptidase I of Bacillus sphaericus NCTC 9602 as a member of the metallo(zinc) carboxypeptidase A family. Modular design of the protein.