MolNFT v1 · #86240 · protein

Heptameric core complex structure of C4B-binding (C4BP) protein from human

4B0F · C4B-binding protein alpha chain: “Heptameric core complex structure of C4B-binding (C4BP) protein from human”. X-ray diffraction, 1 ligand (CL), 1 pocket (best druggability 0.55). MolNFT v1 #86240 on GenesisL1: 3D structure, binding…

PDB: 4B0F
Type: protein
Length: 380 residues
Chains: 7
Method: x-ray diffraction
Collection: MolNFT v1 / PDB
Contract: 0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner: 0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule: C4B-binding protein alpha chain
UniProt: P04003
Ligands: CL
Pockets: 1 · best druggability 0.55

Structure

x-ray diffraction · 6 distinct chains · 74% helix, 0% strand (DSSP).

Chain	Molecule	Type	Residues	Secondary structure	UniProt
A	C4B-binding protein alpha chain	protein	57	75% helix, 0% strand	P04003
B, D	C4B-binding protein alpha chain	protein	55	76% helix, 0% strand	P04003
C	C4B-binding protein alpha chain	protein	49	76% helix, 0% strand	P04003
E	C4B-binding protein alpha chain	protein	55	67% helix, 0% strand	P04003
F	C4B-binding protein alpha chain	protein	53	83% helix, 0% strand	P04003
G	C4B-binding protein alpha chain	protein	56	66% helix, 0% strand	P04003

Ligands and binding sites

CL · Chloride ion · ion · 2 copies · chains B, A, C

Binding sites are the residues within 4.5 Å of a ligand's heavy atoms.

Pockets

1 pocket found on a 1 Å grid, 1 with a druggability of 0.5 or more.

Pocket	Volume (Å³)	Druggability	Buriedness	Lining residues	Inside
1	360	0.55	0.74	37	empty

Interfaces

14 interfaces between chains.

E–G · 1083 Å² buried · 4 hydrogen bonds · protein-protein
A–F · 1043 Å² buried · 4 hydrogen bonds · protein-protein
C–E · 1042 Å² buried · 4 hydrogen bonds · protein-protein
B–D · 1016 Å² buried · 4 hydrogen bonds · protein-protein
A–C · 1016 Å² buried · 3 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 14 modified, 7 disulfide (engineered, disulfide).

Compared structures

4B0F · Heptameric core complex structure of C4b-binding (C4BP) protein from human · the same entry in another collection · chain G against G, TM-score 1.00
P04003 · AlphaFold monomer V2.0 prediction for C4B-binding protein alpha chain (P04003) · a predicted model of the same protein · chain F against A, TM-score 0.73

Analyse

Open in the research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides and crosslinks on the 3D structure
Every structure of UniProt P04003
Elsewhere: RCSB PDB 4B0F · PDBe 4B0F · UniProt P04003

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