CATH Classification
| Level | CATH Code | Description | 
|---|---|---|
|   | 2 | Mainly Beta | 
|   | 2.40 | Beta Barrel | 
|   | 2.40.10 | Thrombin, subunit H | 
|   | 2.40.10.10 | Trypsin-like serine proteases | 
Domain Context
CATH Clusters
| Superfamily | Trypsin-like serine proteases | 
| Functional Family | Complement factor I | 
Enzyme Information
| 3.4.21.45 | Complement factor I. based on mapping to UniProt P05156 Inactivates complement subcomponents C3b, iC3b and C4b by proteolytic cleavage. -!- Cleavage of complement subcomponent C3b requires its binding to cofactor H or complement receptor CR1; cleavage of iC3b requires complement receptor CR1; cleavage of C4b requires C4b-binding protein. -!- Belongs to peptidase family S1. | 
UniProtKB Entries (1)
| P05156 | CFAI_HUMAN Homo sapiens Complement factor I | 
PDB Structure
| PDB | 2XRC | 
| External Links | |
| Method | X-RAY DIFFRACTION | 
| Organism | |
| Primary Citation | Structural Basis for Complement Factor I Control and its Disease-Associated Sequence Polymorphisms. Proc.Natl.Acad.Sci.USA | 
