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.

F5/8 type C domain. This domain is also known as the discoidin (DS) domain family.

Bacteroidetes-Associated Carbohydrate-binding (putative) Often N-terminal (BACON) domain. The BACON domain is found in diverse domain architectures and accociated with a wide variety of domains, including carbohydrate-active enzymes and proteases. It was named for its suggested function of carbohydrate binding; the latter was inferred from domain architectures, sequence conservation, and phyletic distribution. However, recent experimental data suggest that its primary function in Bacteroides ovatus endo-xyloglucanase BoGH5A is to distance the catalytic module from the cell surface and confer additional mobility to the catalytic domain for attack of the polysaccharide. No evidence for a direct role in carbohydrate binding could be found in that case. The large majority of BACON domains are found in Bacteroidetes.

N-terminal domain of M60-like peptidases. This accessory domain has a jelly roll topology.

Substituted updates: Jan 31, 2002

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

ChainA, family 32 carbohydrate-binding module from Bacteroides thetaiotaomicron [Bacteroides thetaiotaomicron VPI-5482],7BLH_AAAA Chain AAAA, family 32 carbohydrate-binding module from Bacteroides thetaiotaomicron [Bacteroides thetaiotaomicron VPI-5482],7BLJ_A Chain A, family 32 carbohydrate-binding module from Bacteroides thetaiotaomicron [Bacteroides thetaiotaomicron VPI-5482],7BLK_A Chain A, family 32 carbohydrate-binding module from Bacteroides thetaiotaomicron [Bacteroides thetaiotaomicron VPI-5482]

BT_4244metallopeptidase from Bacteroides thetaiotaomicron [Bacteroides thetaiotaomicron VPI-5482]

BT_4244metallopeptidase from Bacteroides thetaiotaomicron [Bacteroides thetaiotaomicron VPI-5482],5KD8_A BT_4244 metallopeptidase in complex with Tn antigen. [Bacteroides thetaiotaomicron VPI-5482]

Characterizationof a Family 32 CBM [Clostridium perfringens]

O-GlcNAcase NagJ OS=Clostridium perfringens (strain 13 / Type A) OX=195102 GN=nagJ PE=1 SV=1

O-GlcNAcase NagJ OS=Clostridium perfringens (strain ATCC 13124 / DSM 756 / JCM 1290 / NCIMB 6125 / NCTC 8237 / Type A) OX=195103 GN=nagJ PE=1 SV=1

Sialidase OS=Clostridium septicum OX=1504 PE=3 SV=1