Research workbench
Erythrobacter litoralis EL346 blue-light activated histidine kinase
Analyse Erythrobacter litoralis EL346 blue-light activated histidine kinase in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.
- PDB
- 4R3A
- Type
- protein
- Length
- 596 residues
- Chains
- 2
- Method
- x-ray diffraction
- Collection
- MolNFT v1 / PDB
- Contract
- 0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
- Owner
- 0x3396CDB397284571d12822B4ae1189a8E22AAAAA
- Molecule
- Blue-light-activated histidine kinase 2
- EC
- 2.7.13.3
- UniProt
- Q2NB77
- Ligands
- ANP, RBF, MG
- Pockets
- 11 · best druggability 0.78
Structure
x-ray diffraction · 2 distinct chains · 42% helix, 26% strand (DSSP).
| Chain | Molecule | Type | Residues | Secondary structure | UniProt |
|---|---|---|---|---|---|
| A | Blue-light-activated histidine kinase 2 (EC 2.7.13.3) | protein | 318 | 41% helix, 25% strand | Q2NB77 |
| B | Blue-light-activated histidine kinase 2 (EC 2.7.13.3) | protein | 278 | 43% helix, 28% strand | Q2NB77 |
Ligands and binding sites
- ANP · Phosphoaminophosphonic acid-adenylate ester · ligand · 2 copies · chains A, B
- RBF · Riboflavin · ligand · 2 copies · chains A, B
- MG · Magnesium ion · metal · 2 copies · chains A, B
Binding sites are the residues within 4.5 Å of a ligand's heavy atoms.
Pockets
11 pockets found on a 1 Å grid, 5 with a druggability of 0.5 or more.
| Volume (ų) | Druggability | Buriedness | Lining residues | Inside | |
|---|---|---|---|---|---|
| 1 | 527 | 0.78 | 0.85 | 59 | MG, ANP |
| 2 | 191 | 0.77 | 0.92 | 27 | RBF |
| 3 | 172 | 0.75 | 0.91 | 27 | RBF |
| 4 | 861 | 0.70 | 0.76 | 72 | empty |
| 5 | 209 | 0.59 | 0.80 | 33 | MG, ANP |
Interfaces
1 interface between chains.
- A–B · 1051 Ų buried · 13 hydrogen bonds · protein-protein
Modifications
Observed in the structure: 2 disulfide (disulfide).
Compared structures
- 4R3A · Erythrobacter litoralis EL346 blue-light activated histidine kinase · the same entry in another collection · chain A against A, TM-score 1.00
- Q2NB77 · AlphaFold monomer V2.0 prediction for blue-light-activated histidine kinase 2 (Q2NB77) · a predicted model of the same protein · chain B 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 Q2NB77
- Elsewhere: RCSB PDB 4R3A · PDBe 4R3A · UniProt Q2NB77
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