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CATH Superfamily 2.60.120.290

Spermadhesin, CUB domain

The name of this superfamily has been modified since the most recent official CATH+ release (v4_4_0). At the point of the last release, this superfamily was named:

"
Spermadhesin, CUB domain
".

Functional Families

Overview of the Structural Clusters (SC) and Functional Families within this CATH Superfamily. Clusters with a representative structure are represented by a filled circle.
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FunFam 12: mannan-binding lectin serine protease 1 isoform X1

There are 1 EC terms in this cluster

Please note: EC annotations are assigned to the full protein sequence rather than individual protein domains. Since a given protein can contain multiple domains, it is possible that some of the annotations below come from additional domains that occur in the same protein, but have been classified elsewhere in CATH.

Note: The search results have been sorted with the annotations that are found most frequently at the top of the list. The results can be filtered by typing text into the search box at the top of the table.

EC Term Annotations Evidence
Mannan-binding lectin-associated serine protease-2. [EC: 3.4.21.104]
Selective cleavage after Arg-223 in complement component C2 (-Ser- Leu-Gly-Arg-|-Lys-Ile-Gln-Ile) and after Arg-76 in complement component C4 (-Gly-Leu-Gln-Arg-|-Ala-Leu-Glu-Ile).
  • Mannan-binding lectin (MBL) recognizes patterns of neutral carbohydrates, such as mannose and N-acetylglucosamine, on a wide range of microbial surfaces and is able to initiate activation of the lectin pathway of complement.
  • Displays C1s-like esterolytic activity (cf. EC 3.4.21.42).
  • It also cleaves C4 and C2 with efficiencies that are relatively higher than those of EC 3.4.21.42.
  • Belongs to peptidase family S1A.
 3 O00187 Q91WP0 Q9JJS8
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