7B2Q
Cryo-EM structure of complement C4b in complex with nanobody B12
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A | Complement C4 beta chain | polymer | 656 | 71761.7 | 1 | UniProt (P0C0L4) Pfam (PF21145) Pfam (PF01835) Pfam (PF17791) Pfam (PF17789) Pfam (PF07703) In PDB | Homo sapiens (Human) | |
| 2 | B | Complement C4 alpha chain | polymer | 767 | 84270.1 | 1 | UniProt (P0C0L4) Pfam (PF01821) Pfam (PF00207) Pfam (PF07678) Pfam (PF22661) In PDB | Homo sapiens (Human) | Acidic complement C4,C3 and PZP-like alpha-2-macroglobulin domain-containing protein 2 |
| 3 | C | Complement C4 gamma chain | polymer | 291 | 33115.6 | 1 | UniProt (P0C0L4) Pfam (PF07677) Pfam (PF01759) In PDB | Homo sapiens (Human) | |
| 4 | D | Anti-C4b nanobody B12 | polymer | 139 | 15273.0 | 1 | Lama glama (Llama) | ||
| 5 | E | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose | branched | 424.4 | 1 | In PDB GlyTouCan (G42666HT) | |||
| 6 | B | 2-acetamido-2-deoxy-beta-D-glucopyranose | non-polymer | 221.2 | 3 | Chemie (NAG) |
Sequence modifications
B: 680 - 1446 (UniProt: P0C0L4)
| PDB | External Database | Details |
|---|---|---|
| Ser 1201 | Thr 1201 | variant |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 4 |
| Total formula weight | 204420.3 | |
| Branched | Number of molecules | 1 |
| Total formula weight | 424.4 | |
| Non-Polymers* | Number of molecules | 3 |
| Total formula weight | 663.6 | |
| All* | Total formula weight | 205508.4 |
