Protein Family Models

This domain consists of 4 beta strands and two alpha helices which make up the dimerisation surface of members of the M20 family of peptidases [1]. This family includes a range of zinc metallopeptidases belonging to several families in the peptidase classification [2]. Family M20 are Glutamate carboxypeptidases. Peptidase family M25 contains X-His dipeptidases. [1]. 9083113. Crystal structure of carboxypeptidase G2, a bacterial enzyme with applications in cancer therapy. Rowsell S, Pauptit RA, Tucker AD, Melton RG, Blow DM, Brick P;. Structure 1997;5:337-347. [2]. 7674922. Evolutionary families of metallopeptidases. Rawlings ND, Barrett AJ;. Meth Enzymol 1995;248:183-228. (from Pfam)

Date:

2024-10-16

This family includes a range of zinc metallopeptidases belonging to several families in the peptidase classification [1]. Family M20 are Glutamate carboxypeptidases. Peptidase family M25 contains X-His dipeptidases. [1]. 7674922. Evolutionary families of metallopeptidases. Rawlings ND, Barrett AJ;. Meth Enzymol 1995;248:183-228. (from Pfam)

Date:

2024-10-16

This model represents a clade of dipeptidase enzymes, many of which are specific for carnosine (beta-alanyl-histidine). This enzymes is found broadly in bacteria and at least one archaeon (Methanosarcina). In most species there is only one sequence hitting this model, while Bacteroides thetaiotaomicron, Chlorobium tepidum and Clostridium perfringens have two each and Fusobacterium nucleatum has three. These may indicate that there is a broader substrate range than just carnosine in these (and other) species. 8/19/03 GO terms added [SS]

Gene:

pepD

Date:

2023-10-26

aminoacyl-histidine dipeptidase catalyzes a broad range of dipeptide and tripeptide substrates

Date:

2015-07-24