Peptidase M60, enhancin and enhancin-like. This family of peptidases contains a zinc metallopeptidase motif (HEXXHX(8,28)E) and possesses mucinase activity. It includes the viral enhancins as well as enhancin-like peptidases from bacterial species. Enhancins are a class of metalloproteases found in some baculoviruses that enhance viral infection by degrading the peritrophic membrane (PM) of the insect midgut. Bacterial enhancins are found to be cytotoxic when compared to viral enhancin, however, suggesting that the bacterial enhancins do not enhance infection in the same way as viral enhancin. Bacterial enhancins may have evolved a distinct biochemical function. These bacterial domains are peptidases targetting host glycoproteins and thus probably play an important role in successful colonisation of both vertebrate mucosal surfaces and the invertebrate digestive tract by both mutualistic and pathogenic microbes. This family has been augmented by a merge with the sequences in the Enhancin Pfam family.

Chitin-binding domain of chitinase C. Chitin-binding domain of chitinase C (ChiC) of Streptomyces griseus and related proteins. Chitinase C is a family 19 chitinase, and consists of a N-terminal chitin binding domain and a C-terminal chitin-catalytic domain that effects degradation. Chitinases function in invertebrates in the degradation of old exoskeletons, in fungi to utilize chitin in cell walls, and in bacteria which use chitin as an energy source. ChiC contains the characteristic chitin-binding aromatic residues.

Chitin-binding domain type 3.

Cellulose-binding domain, chitinase and related proteins. This group contains proteins related to the cellulose-binding domain of Erwinia chrysanthemi endoglucanase Z (EGZ) and Serratia marcescens chitinase B (ChiB). Gram negative plant parasite Erwinia chrysanthemi produces a variety of depolymerizing enzymes to metabolize pectin and cellulose on the host plant. Cellulase EGZ has a modular structure, with N-terminal catalytic domain linked to a C-terminal cellulose-binding domain (CBD). CBD mediates the secretion activity of EGZ. Chitinases allow certain bacteria to utilize chitin as a energy source. Typically, non-plant chitinases are of the glycosidase family 18.

Chitin/cellulose binding domains of chitinase and related enzymes. This group contains proteins related to the cellulose-binding domain of Erwinia chrysanthemi endoglucanase Z (EGZ) and Serratia marcescens chitinase B (ChiB). Gram negative plant parasite Erwinia chrysanthemi produces a variety of depolymerizing enzymes to metabolize pectin and cellulose on the host plant. Cellulase EGZ has a modular structure, with an N-terminal catalytic domain linked to a C-terminal cellulose-binding domain (CBD). CBD mediates the secretion activity of EGZ. Chitinases allow certain bacteria to utilize chitin as a energy source. Typically, non-plant chitinases are of the glycosidase family 18. Bacillus circulans Glycosidase ChiA1 hydrolyzes chitin and is comprised of several domains: the C-terminal chitin binding domain, an N-terminal catalytic domain, and 2 fibronectin type III-like domains. Bacillus circulans WL-12 ChiA1 facilitates invasion of fungal cell walls. The ChiA1 chitin binding domain is required for the specific recognition of insoluble chitin. although topologically and structurally related, ChiA1 lacks the characteristic aromatic residues of Erwinia chrysanthemi endoglucanase Z (CBD(EGZ)). Streptomyces griseus Chitinase C is a family 19 chitinase, and consists of a N-terminal chitin binding domain and a C-terminal chitin-catalytic domain that effects degradation. ChiC contains the characteristic chitin-binding aromatic residues. Chitinases function in invertebrates in the degradation of old exoskeletons, in fungi to utilize chitin in cell walls, and in bacteria which use chitin as an energy source.

Thecrystal structure of a functionally unknown conserved protein mutant from Bacillus anthracis str. Ames [Bacillus anthracis str. Ames]

Thecrystal structure of a functionally unknown conserved protein from Bacillus anthracis str. Ames. [Bacillus anthracis str. Ames]

ChainA, Peptidase M60 domain-containing protein [Akkermansia muciniphila ATCC BAA-835]

TRPM8 channel-associated factor 3 OS=Mus musculus OX=10090 GN=Tcaf3 PE=1 SV=1

TRPM8 channel-associated factor 3 OS=Rattus norvegicus OX=10116 GN=Tcaf3 PE=2 SV=1

TRPM8 channel-associated factor 1 OS=Bos taurus OX=9913 GN=TCAF1 PE=2 SV=1

TRPM8 channel-associated factor 1 OS=Pongo abelii OX=9601 GN=TCAF1 PE=2 SV=2

TRPM8 channel-associated factor 1 OS=Homo sapiens OX=9606 GN=TCAF1 PE=1 SV=3