Research workbench
Crystal structure of human two pore domain potassium ion channel TREK1 (K2P2.1)
Analyse Crystal structure of human two pore domain potassium ion channel TREK1 (K2P2.1) in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.
- PDB
- 4TWK
- Type
- protein
- Length
- 496 residues
- Chains
- 2
- Method
- x-ray diffraction
- Collection
- MolNFT v1 / PDB
- Contract
- 0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
- Owner
- 0x3396CDB397284571d12822B4ae1189a8E22AAAAA
- Molecule
- Potassium channel subfamily K member 2
- UniProt
- O95069
- Ligands
- 37X, NAG, K, MG
- Pockets
- 14 · best druggability 0.72
Structure
x-ray diffraction · 2 distinct chains · 78% helix, 0% strand (DSSP).
| Chain | Molecule | Type | Residues | Secondary structure | UniProt |
|---|---|---|---|---|---|
| A | Potassium channel subfamily K member 2 | protein | 255 | 76% helix, 0% strand | O95069 |
| B | Potassium channel subfamily K member 2 | protein | 241 | 80% helix, 0% strand | O95069 |
Ligands and binding sites
- 37X · Octyl Glucose Neopentyl Glycol · ligand · 5 copies · chains A, B
- NAG · 2-acetamido-2-deoxy-beta-D-glucopyranose · sugar · chains B
- K · Potassium ion · metal · 3 copies · chains A, B
- MG · Magnesium ion · metal · chains A
Binding sites are the residues within 4.5 Å of a ligand's heavy atoms.
Pockets
14 pockets found on a 1 Å grid, 5 with a druggability of 0.5 or more.
| Volume (ų) | Druggability | Buriedness | Lining residues | Inside | |
|---|---|---|---|---|---|
| 1 | 682 | 0.72 | 0.78 | 58 | empty |
| 2 | 345 | 0.69 | 0.81 | 45 | MG |
| 3 | 611 | 0.68 | 0.77 | 41 | empty |
| 4 | 173 | 0.65 | 0.85 | 28 | 37X |
| 5 | 108 | 0.52 | 0.82 | 18 | empty |
Interfaces
1 interface between chains.
- A–B · 5768 Ų buried · 46 hydrogen bonds · protein-protein
Modifications
Observed in the structure: 1 disulfide, 1 glycan (disulfide, N-glycosylation).
Compared structures
- 4TWK · Crystal structure of human two pore domain potassium ion channel TREK1 (K2P2.1) · the same entry in another collection · chain A against A, TM-score 1.00
- O95069 · AlphaFold monomer V2.0 prediction for potassium channel subfamily K member 2 (O95069) · a predicted model of the same protein · chain A against A, TM-score 0.90
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 O95069
- Elsewhere: RCSB PDB 4TWK · PDBe 4TWK · UniProt O95069
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