MolNFT v1 · #28825 · protein
Avian respiratory complex II with oxaloacetate and ubiquinone
1YQ3 · Succinate dehydrogenase flavoprotein subunit: “Avian respiratory complex II with oxaloacetate and ubiquinone”. X-ray diffraction, 10 ligands (PEE, FAD, TEO), 17 pockets (best druggability 0.84). MolNFT v1 #28825 on GenesisL1: 3D…
- PDB
- 1YQ3
- Type
- protein
- Length
- 1,097 residues
- Chains
- 4
- Method
- x-ray diffraction
- Collection
- MolNFT v1 / PDB
- Contract
- 0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
- Owner
- 0x3396CDB397284571d12822B4ae1189a8E22AAAAA
- Molecule
- Succinate dehydrogenase flavoprotein subunit; Succinate dehydrogenase ip subunit…
- EC
- 1.3.5.1
- UniProt
- Q9YHT1, Q9YHT2, Q5ZIS0
- Ligands
- PEE, FAD, TEO, FES, SF4, F3S, UQ, JZR, HEM, UNL
- Pockets
- 17 · best druggability 0.84
Structure
x-ray diffraction · 4 distinct chains · 44% helix, 16% strand (DSSP).
| Chain | Molecule | Type | Residues | Secondary structure | UniProt |
|---|---|---|---|---|---|
| A | Succinate dehydrogenase flavoprotein subunit (EC 1.3.5.1) | protein | 614 | 36% helix, 23% strand | Q9YHT1 |
| B | Succinate dehydrogenase ip subunit (EC 1.3.5.1) | protein | 242 | 32% helix, 15% strand | Q9YHT2 |
| C | Succinate dehydrogenase cytochrome B, large subunit (EC 1.3.5.1) | protein | 139 | 73% helix, 1% strand | — |
| D | Succinate dehydrogenase cytochrome B, small subunit (EC 1.3.5.1) | protein | 102 | 85% helix, 0% strand | Q5ZIS0 |
Ligands and binding sites
- PEE · 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine · ligand · 2 copies · chains C, D
- FAD · Flavin-adenine dinucleotide · ligand · chains A, B
- TEO · Malate like intermediate · ligand · chains A
- FES · Fe2/s2 (inorganic) cluster · ligand · chains B
- SF4 · Iron/sulfur cluster · ligand · chains B
- F3S · FE3-S4 cluster · ligand · chains B
- UQ · Coenzyme Q10, (2Z,6E,10Z,14E,18E,22E,26Z)-isomer · ligand · chains B, C, D
- JZR · hexyl beta-D-glucopyranoside · ligand · chains B, C
- HEM · Protoporphyrin IX containing Fe · ligand · chains B, C, D
- UNL · Unknown ligand · ion · 30 copies · chains A, B, C, D
- GOL · Glycerol · additive · chains B
Binding sites are the residues within 4.5 Å of a ligand's heavy atoms.
Pockets
17 pockets found on a 1 Å grid, 8 with a druggability of 0.5 or more.
| Volume (ų) | Druggability | Buriedness | Lining residues | Inside | |
|---|---|---|---|---|---|
| 1 | 295 | 0.84 | 0.95 | 53 | FAD, TEO |
| 2 | 1035 | 0.84 | 0.85 | 89 | UQ, HEM, PEE |
| 3 | 82 | 0.75 | 0.97 | 20 | empty |
| 4 | 333 | 0.70 | 0.83 | 38 | UNL |
| 5 | 407 | 0.66 | 0.79 | 38 | empty |
Interfaces
5 interfaces between chains.
- A–B · 2706 Ų buried · 51 hydrogen bonds · protein-protein
- B–C · 1787 Ų buried · 20 hydrogen bonds · protein-protein
- C–D · 1357 Ų buried · 9 hydrogen bonds · protein-protein
- B–D · 606 Ų buried · 14 hydrogen bonds · protein-protein
- A–C · 140 Ų buried · 4 hydrogen bonds · protein-protein
Modifications
Observed in the structure: 1 cofactor (flavinylation).
Compared structures
- 1YQ3 · Avian respiratory complex ii with oxaloacetate and ubiqui · the same entry in another collection · chain B against B, TM-score 1.00
- Q9YHT1 · AlphaFold monomer V2.0 prediction for succinate dehydrogenase [ubiquinone] flavoprotein… · a predicted model of the same protein · chain A against A, TM-score 1.00
- Q9YHT2 · AlphaFold monomer V2.0 prediction for succinate dehydrogenase [ubiquinone] iron-sulfur… · a predicted model of the same protein · chain B against A, TM-score 0.99
- Q5ZIS0 · AlphaFold monomer V2.0 prediction for succinate dehydrogenase [ubiquinone] cytochrome B… · a predicted model of the same protein · chain D against A, TM-score 0.99
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 Q9YHT1
- Every structure of UniProt Q9YHT2
- Every structure of UniProt Q5ZIS0
- Elsewhere: RCSB PDB 1YQ3 · PDBe 1YQ3 · UniProt Q9YHT1 · UniProt Q9YHT2 · UniProt Q5ZIS0
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