CATH Classification
| Level | CATH Code | Description |
|---|---|---|
|
1 | Mainly Alpha |
|
1.10 | Orthogonal Bundle |
|
1.10.1840 | main proteinase (3clpro) structure, domain 3 |
|
1.10.1840.10 | main proteinase (3clpro) structure, domain 3 |
Domain Context
CATH Clusters
| Superfamily | main proteinase (3clpro) structure, domain 3 |
| Functional Family |
Enzyme Information
| 3.4.22.- |
Cysteine endopeptidases.
based on mapping to UniProt P0C6U3
|
| 3.4.22.69 |
SARS coronavirus main proteinase.
based on mapping to UniProt P0C6U3
TSAVLQ-|-SGFRK-NH(2) and SGVTFQ-|-GKFKK the two peptides corresponding to the two self-cleavage sites of the SARS 3C-like proteinase are the two most reactive peptide substrates. The enzyme exhibits a strong preference for substrates containing Gln at P1 position and Leu at P2 position.
-!- SARS coronavirus main protease is the key enzyme in SARS coronavirus replicase polyprotein processing. -!- Belongs to peptidase family C30.
|
| 3.4.19.12 |
Ubiquitinyl hydrolase 1.
based on mapping to UniProt P0C6U3
Thiol-dependent hydrolysis of ester, thioester, amide, peptide and isopeptide bonds formed by the C-terminal Gly of ubiquitin (a 76-residue protein attached to proteins as an intracellular targeting signal).
-!- Links to polypeptides smaller than 60 residues are hydrolyzed more readily than those to larger polypeptides. -!- Isoforms exist with quantitatively different specificities among the best known being UCH-L1 and UCH-L3, major proteins of the brain of mammals. -!- Inhibited by ubiquitin aldehyde (in which Gly76 is replaced by aminoacetaldehyde). -!- Belongs to peptidase family C12.
|
UniProtKB Entries (1)
| P0C6U3 |
R1A_CVHN1
Human coronavirus HKU1 (isolate N1)
Replicase polyprotein 1a
|
PDB Structure
| PDB | 3D23 |
| External Links | |
| Method | X-RAY DIFFRACTION |
| Organism | |
| Primary Citation |
Structure of the main protease from a global infectious human coronavirus, HCoV-HKU1.
J.Virol.
|
