5016 Ubiquinone-binding protein QP-C of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)
Ligands and drugs
Aggregated over all current member domains of this group. Drug annotations come from DrugDomain; buffers and crystallization additives are excluded from the tables below.
Chemical profile
ClassyFire chemical superclasses of the ligands bound by this X-group's proteins, from DrugDomain annotations.
The raw number of superclasses rises with the number of proteins sampled; the per-20 value compares X-groups at equal depth.
| Superclass | Proteins | Expected | 0.25×observed / expected4× | Ratio | Significance |
|---|---|---|---|---|---|
| Homogeneous metal compounds | 0 | 5.8 | 0 | q = 1.4e-3 | |
| Lipids and lipid-like molecules | 12 | 1.3 | 9.11× | not tested | |
| Homogeneous non-metal compounds | 1 | 2.6 | 0.39× | not tested |
Unit: a protein (UniProt accession) with a ligand-binding domain in this X-group, counted once per superclass. Expected counts use each superclass's frequency across all ligand-binding X-groups; significance is Fisher's exact test with Benjamini–Hochberg correction. Buffers and crystallization additives are excluded. ECOD v295.2; the method follows the ECOD 2027 update, whose published figures used a slightly different artifact filter.
DrugBank compounds
| DrugBank | PDB ligand | Name | Domains |
|---|---|---|---|
| DB03429 | CDL | Tetrastearoyl cardiolipin | 117 |
| DB04327 | PEE | Phosphatidylethanolamine | 38 |
| DB09114 | PCF | Colfosceril palmitate | 9 |
| DB01728 | PEF | 1,2-dihexadecanoyl-sn-glycero-3-phosphoethanolamine | 7 |
| DB02686 | UMQ | Undecyl-Beta-D-Maltopyranoside | 7 |
Most frequently bound compounds
| PDB ligand | Name | Domains in contact |
|---|---|---|
| CDL | CARDIOLIPIN | 188 |
| PEE | 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine | 76 |
| 3PE | 1,2-Distearoyl-sn-glycerophosphoethanolamine | 62 |
| PC1 | 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE | 47 |
| 8PE | (2R)-3-{[(S)-(2-aminoethoxy)(hydroxy)phosphoryl]oxy}-2-(tetradecanoyloxy)propyl octadecanoate | 23 |
| CN3 | (2R,5S,11R,14R)-5,8,11-trihydroxy-2-(nonanoyloxy)-5,11-dioxido-16-oxo-14-[(propanoyloxy)methyl]-4,6,10,12,15-pentaoxa-5,11-diphosphanonadec-1-yl undecanoate | 18 |
| PEF | DI-PALMITOYL-3-SN-PHOSPHATIDYLETHANOLAMINE | 13 |
| PCF | 1,2-DIACYL-SN-GLYCERO-3-PHOSHOCHOLINE | 12 |
| PC7 | (7S)-4-HYDROXY-N,N,N-TRIMETHYL-9-OXO-7-[(PALMITOYLOXY)METHYL]-3,5,8-TRIOXA-4-PHOSPHAHEXACOSAN-1-AMINIUM 4-OXIDE | 4 |
| PGT | (1S)-2-{[{[(2R)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}-1-[(PALMITOYLOXY)METHYL]ETHYL STEARATE | 4 |
| 3PH | 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE | 3 |
| AZI | AZIDE ION | 3 |
| PLX | (9R,11S)-9-({[(1S)-1-HYDROXYHEXADECYL]OXY}METHYL)-2,2-DIMETHYL-5,7,10-TRIOXA-2LAMBDA~5~-AZA-6LAMBDA~5~-PHOSPHAOCTACOSANE-6,6,11-TRIOL | 3 |
| CN6 | (2R,5R,11S,14R)-2-(butanoyloxy)-5,8,11-trihydroxy-5,11-dioxido-16-oxo-14-[(propanoyloxy)methyl]-4,6,10,12,15-pentaoxa-5,11-diphosphanonadec-1-yl undecanoate | 2 |
| PTY | PHOSPHATIDYLETHANOLAMINE | 2 |
| TGL | TRISTEAROYLGLYCEROL | 2 |
| UNL | Unknown ligand | 2 |
| LOP | (1R)-2-{[(R)-(2-AMINOETHOXY)(HYDROXY)PHOSPHORYL]OXY}-1-[(DODECANOYLOXY)METHYL]ETHYL (9Z)-OCTADEC-9-ENOATE | 1 |
| PX2 | 1,2-DILAUROYL-SN-GLYCERO-3-PHOSPHATE | 1 |
| UMQ | UNDECYL-MALTOSIDE | 1 |