Research workbench
Structure of neuronal nitric oxide synthase heme domain in complex with N,N'-([1,1'-biphenyl]-3,3'-DIYL)BIS(THIOPHENE-2-carboximidamide)
Analyse Structure of neuronal nitric oxide synthase heme domain in complex with… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.
- PDB
- 4KCH
- Type
- protein
- Length
- 818 residues
- Chains
- 2
- Method
- x-ray diffraction
- Collection
- MolNFT v1 / PDB
- Contract
- 0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
- Owner
- 0x3396CDB397284571d12822B4ae1189a8E22AAAAA
- Molecule
- Nitric oxide synthase, brain
- EC
- 1.14.13.39
- UniProt
- P29476
- Ligands
- HEM, H4B, H38, ZN
- Pockets
- 11 · best druggability 0.88
Structure
x-ray diffraction · 2 distinct chains · 41% helix, 15% strand (DSSP).
| Chain | Molecule | Type | Residues | Secondary structure | UniProt |
|---|---|---|---|---|---|
| A | Nitric oxide synthase, brain (EC 1.14.13.39) | protein | 407 | 41% helix, 15% strand | P29476 |
| B | Nitric oxide synthase, brain (EC 1.14.13.39) | protein | 411 | 40% helix, 15% strand | P29476 |
Ligands and binding sites
- HEM · Protoporphyrin IX containing Fe · ligand · 2 copies · chains A, B
- H4B · 5,6,7,8-tetrahydrobiopterin · ligand · 2 copies · chains A, B
- H38 · N,N'-biphenyl-3,3'-diyldithiophene-2-carboximidamide · ligand · 2 copies · chains A, B
- ZN · Zinc ion · metal · chains A, B
- ACT · Acetate ion · additive · 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, 2 with a druggability of 0.5 or more.
| Volume (ų) | Druggability | Buriedness | Lining residues | Inside | |
|---|---|---|---|---|---|
| 1 | 901 | 0.88 | 0.90 | 138 | HEM, H38, H4B, ACT |
| 2 | 79 | 0.63 | 0.90 | 19 | H4B |
| 3 | 79 | 0.38 | 0.78 | 17 | empty |
| 4 | 90 | 0.38 | 0.77 | 19 | empty |
| 5 | 93 | 0.36 | 0.75 | 13 | empty |
Interfaces
1 interface between chains.
- A–B · 2776 Ų buried · 44 hydrogen bonds · protein-protein
Compared structures
- 4KCH · Structure of neuronal nitric oxide synthase heme domain in complex with… · 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 P29476
- Elsewhere: RCSB PDB 4KCH · PDBe 4KCH · UniProt P29476
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