Research workbench
Tubulin-colchicine complex
Analyse Tubulin-colchicine complex in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.
- PDB
- 4O2B
- Type
- protein
- Length
- 2,162 residues
- Chains
- 6
- Method
- x-ray diffraction
- Collection
- MolNFT v1 / PDB
- Contract
- 0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
- Owner
- 0x3396CDB397284571d12822B4ae1189a8E22AAAAA
- Molecule
- Tubulin alpha-1B chain; Tubulin beta-2B chain; Stathmin-4; Tubulin-tyrosine ligase
- UniProt
- P81947, Q6B856, P63043, E1BQ43
- Ligands
- GTP, GDP, LOC, ACP, MG, CA
- Pockets
- 20 · best druggability 0.87
Structure
x-ray diffraction · 6 distinct chains · 47% helix, 19% strand (DSSP).
| Chain | Molecule | Type | Residues | Secondary structure | UniProt |
|---|---|---|---|---|---|
| A | Tubulin alpha-1B chain | protein | 439 | 45% helix, 18% strand | P81947 |
| B | Tubulin beta-2B chain | protein | 422 | 49% helix, 19% strand | Q6B856 |
| C | Tubulin alpha-1B chain | protein | 440 | 46% helix, 17% strand | P81947 |
| D | Tubulin beta-2B chain | protein | 421 | 50% helix, 19% strand | Q6B856 |
| E | Stathmin-4 | protein | 121 | 76% helix, 13% strand | P63043 |
| F | Tubulin-tyrosine ligase | protein | 319 | 31% helix, 24% strand | E1BQ43 |
Ligands and binding sites
- GTP · Guanosine-5'-triphosphate · ligand · 2 copies · chains A, B, C, D
- GDP · Guanosine-5'-diphosphate · ligand · 2 copies · chains B, D
- LOC · N-[(7S)-1,2,3,10-tetramethoxy-9-oxo-6,7-dihydro-5H-benzo[d]heptalen-7-yl]ethanamide · ligand · 2 copies · chains A, B, C, D
- ACP · Phosphomethylphosphonic acid adenylate ester · ligand · chains F
- MG · Magnesium ion · metal · 5 copies · chains A, B, C, D, F
- CA · Calcium ion · metal · 3 copies · chains A, B, C
- GOL · Glycerol · additive · 13 copies · chains A, B, F, C, D, E
- IMD · Imidazole · additive · 3 copies · chains C, D, E
- PEG · Di(hydroxyethyl)ether · additive · 2 copies · chains C, B
- MES · 2-(N-morpholino)-ethanesulfonic acid · additive · chains A, B
Binding sites are the residues within 4.5 Å of a ligand's heavy atoms.
Pockets
20 pockets found on a 1 Å grid, 16 with a druggability of 0.5 or more.
| Volume (ų) | Druggability | Buriedness | Lining residues | Inside | |
|---|---|---|---|---|---|
| 1 | 775 | 0.87 | 0.90 | 91 | GTP, MG, GOL, LOC |
| 2 | 910 | 0.84 | 0.86 | 95 | GTP, MG, GOL, LOC |
| 3 | 645 | 0.82 | 0.86 | 91 | GDP, MG, GOL, PEG, IMD |
| 4 | 137 | 0.75 | 0.94 | 28 | empty |
| 5 | 991 | 0.74 | 0.77 | 70 | GOL |
Interfaces
9 interfaces between chains.
- A–E · 1640 Ų buried · 22 hydrogen bonds · protein-protein
- C–D · 1525 Ų buried · 24 hydrogen bonds · protein-protein
- A–B · 1399 Ų buried · 19 hydrogen bonds · protein-protein
- B–C · 942 Ų buried · 15 hydrogen bonds · protein-protein
- A–F · 807 Ų buried · 11 hydrogen bonds · protein-protein
Compared structures
- 4O2B · Tubulin-Colchicine complex · the same entry in another collection · chain A against A, TM-score 1.00
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 P81947
- Every structure of UniProt Q6B856
- Every structure of UniProt P63043
- Every structure of UniProt E1BQ43
- Elsewhere: RCSB PDB 4O2B · PDBe 4O2B · UniProt P81947 · UniProt Q6B856 · UniProt P63043 · UniProt E1BQ43
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