MolNFT v1 · #181063 · protein
Human traak K+ channel fheig mutant A198E in a tl+ bound conductive conformation
7LJA · Isoform 2 of potassium channel subfamily K member 4: “Human traak K+ channel fheig mutant A198E in a tl+ bound conductive conformation”. X-ray diffraction, 2 ligands (TL, CA), 20 pockets (best druggability 0.71). MolNFT v1 #181063…
- PDB
- 7LJA
- Type
- protein
- Length
- 1,351 residues
- Chains
- 6
- Method
- x-ray diffraction
- Collection
- MolNFT v1 / PDB
- Contract
- 0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
- Owner
- 0x3396CDB397284571d12822B4ae1189a8E22AAAAA
- Molecule
- Isoform 2 of potassium channel subfamily K member 4; Anti-traak antibody 13E9 Fab…
- Ligands
- TL, CA
- Pockets
- 20 · best druggability 0.71
Structure
x-ray diffraction · 5 distinct chains · 37% helix, 28% strand (DSSP).
| Chain | Molecule | Type | Residues | Secondary structure | UniProt |
|---|---|---|---|---|---|
| A | Isoform 2 of potassium channel subfamily K member 4 | protein | 253 | 75% helix, 0% strand | — |
| B | Isoform 2 of potassium channel subfamily K member 4 | protein | 255 | 76% helix, 0% strand | — |
| D, F | Anti-traak antibody 13E9 Fab fragment light chain | protein | 211 | 5% helix, 50% strand | — |
| E | Anti-traak antibody 13E9 Fab fragment heavy chain | protein | 211 | 7% helix, 52% strand | — |
| G | Anti-traak antibody 13E9 Fab fragment heavy chain | protein | 210 | 7% helix, 50% strand | — |
Ligands and binding sites
- TL · Thallium (I) ion · metal · 8 copies · chains A, B
- CA · Calcium ion · metal · 3 copies · chains A, B, G
Binding sites are the residues within 4.5 Å of a ligand's heavy atoms.
Pockets
20 pockets found on a 1 Å grid, 5 with a druggability of 0.5 or more.
| Volume (ų) | Druggability | Buriedness | Lining residues | Inside | |
|---|---|---|---|---|---|
| 1 | 1015 | 0.71 | 0.75 | 86 | CA, TL |
| 2 | 660 | 0.70 | 0.78 | 46 | TL |
| 3 | 514 | 0.59 | 0.74 | 54 | empty |
| 4 | 442 | 0.57 | 0.73 | 57 | empty |
| 5 | 243 | 0.55 | 0.78 | 32 | empty |
Interfaces
12 interfaces between chains.
- A–B · 5600 Ų buried · 42 hydrogen bonds · protein-protein
- F–G · 1806 Ų buried · 17 hydrogen bonds · protein-protein
- D–E · 1759 Ų buried · 19 hydrogen bonds · protein-protein
- B–G · 472 Ų buried · 7 hydrogen bonds · protein-protein
- A–E · 471 Ų buried · 7 hydrogen bonds · protein-protein
Modifications
Observed in the structure: 9 disulfide (disulfide).
Compared structures
- 7LJA · Human TRAAK K+ channel FHEIG mutant A198E in a Tl+ bound conductive conformation · 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
- Elsewhere: RCSB PDB 7LJA · PDBe 7LJA
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