P09871 (C1S_HUMAN) Homo sapiens (Human)
Complement C1s subcomponent UniProtKBInterProSTRINGInteractive Modelling
688 aa; Sequence (Fasta)
Molecule Processing
| Complement C1s subcomponent heavy chain | |
| Complement C1s subcomponent light chain |
Sequence Features
| 475 | Charge relay system | ||
| 529 | Charge relay system | ||
| 632 | Charge relay system | ||
| 60 | Calcium | ||
| 68 | Calcium | ||
| 113 | Calcium | ||
| 131 | Calcium | ||
| 132 | Calcium; via carbonyl oxygen | ||
| 134 | Calcium | ||
| 149 | Calcium | ||
| 150 | Calcium; via carbonyl oxygen | ||
| 153 | Calcium; via carbonyl oxygen | ||
| 119 | R -> H (in dbSNP:rs12146727) VAR_033643 dbSNP | ||
| 294 | C -> R (in EDSPD2; dbSNP:rs886040975) VAR_077120 dbSNP | ||
| 316 | Missing (in EDSPD2; unknown pathological significance) VAR_077121 | ||
| 327 | V -> L (in dbSNP:rs2239170) VAR_033644 dbSNP | ||
| 383 | R -> H (in dbSNP:rs20573) VAR_014565 dbSNP | ||
| 65-83 | |||
| 135-147 | |||
| 143-156 | |||
| 158-171 | |||
| 175-202 | |||
| 234-251 | |||
| 294-341 | |||
| 321-354 | |||
| 359-403 | |||
| 386-421 | |||
| 425-549 | Interchain (between heavy and light chains) | ||
| 595-618 | |||
| 628-659 | |||
| 19-127 | CUB domain IPR000859PF00431 | ||
| 175-287 | CUB domain IPR000859PF00431 | ||
| 294-354 | Sushi/SCR/CCP domain IPR000436PF00084 | ||
| 359-413 | Sushi/SCR/CCP domain IPR000436PF00084 | ||
| 438-675 | Serine proteases, trypsin domain IPR001254PF00089 |
Sequence Alignments
Experimental structures
| Description | Oligo-state | Ligands | Structure | Range |
|---|---|---|---|---|
| Crystal structure of human C1s in complex with inhibitor gigastasin |
Heteromer | 1×NAG; | 5ubm | |
| Assess | ||||
| C1rC1s complex |
Heteromer P00736; | 1×NAG; 1×NAG; 2×NAG; 12×CA; 6×NA; 2×NAG; | 6f1c | |
| Assess | ||||
| C1s CUB1-EGF-CUB2 in complex with a collagen-like peptide from C1q |
Heteromer | 3×CA; 2×NA; 1×NAG; | 4lor | |
| Assess | ||||
| C1rC1s complex |
Heteromer P00736; | 1×NAG; 1×NAG; 6×CA; 3×NA; 1×NAG; | 6f1h | |
| Assess | ||||
| Crystal Structure of the CUB1-EGF Interaction Domain of Complement Protease C1s | homo-2-mer | 2×CA; 2×MG; | 1nzi | |
| Assess | ||||
| The X-ray crystal structure of human complement protease C1s zymogen | monomer | 4j1y | ||
| Assess | ||||
| CRYSTAL STRUCTURE OF THE CATALYTIC DOMAIN OF HUMAN COMPLEMENT C1S PROTEASE | monomer | 1×NAG; 2×SO4; 1×NES; | 1elv | |
| Assess | ||||
| C1s CUB1-EGF-CUB2 | monomer | 1×NA; 3×CA; | 4lmf | |
| Assess | ||||
| C1s CUB2-CCP1-CCP2 | monomer | 4lot | ||
| Assess | ||||
| C1s CUB2-CCP1 | monomer | 1×CA; | 4los | |
| Assess | ||||