Protein profile

PA4430

cytochrome b

Genome: NC_002516.2

Gene: PA4430 Structure source: AlphaFold UniProt Q9HVY5
Amino acids 403
Annotations 7
Features 50
PDB binders 10
Druggability 0.818

Overview

Basic information about this protein and its source genome.

Accession
PA4430
Gene
PA4430
Status
annotated
Amino acids
403
Structure source
AlphaFold

Target profile

Computed evidence for target prioritization.

Human off-target
hit
Human identity (%)
44.837
Human E-value
6.369999999999999e-90
Gut microbiome off-target
hit
Essential (DEG)
Y
Localization
CytoplasmicMembrane

Selected Druggability evidence

Selected Druggability is the FPocket score chosen for ranking using the curated structure priority. The 3D viewer may show a different loaded structure, so its visible pockets can differ.

FPocket 0.818
Structure
Pocket

Sequence

Primary amino-acid sequence viewer.

Functional Annotations

Enzyme classification and Gene Ontology terms linked to this protein.

7 GO

Gene Ontology (GO)

7
  • GO:0016020 A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it.
  • GO:0045275 A protein complex that transfers electrons from ubiquinol to cytochrome c and translocates two protons across a membrane. The complex contains a core structure of three catalytic subunits: cytochrome b, the Rieske iron sulfur protein (ISP), and cytochrome c1, which are arranged in an integral membrane-bound dimeric complex; additional subunits are present, and vary among different species.
  • GO:0046872 Binding to a metal ion.
  • GO:0016491 Catalysis of an oxidation-reduction (redox) reaction, a reversible chemical reaction in which the oxidation state of an atom or atoms within a molecule is altered. One substrate acts as a hydrogen or electron donor and becomes oxidized, while the other acts as hydrogen or electron acceptor and becomes reduced.
  • GO:0008121 Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: a quinol + 2 Fe(III)-cytochrome c = a quinone + 2 Fe(II)-cytochrome c + 2 H+(out).
  • GO:0022904 A process in which a series of electron carriers operate together to transfer electrons from donors such as NADH and FADH2 to any of several different terminal electron acceptors to generate a transmembrane electrochemical gradient.
  • GO:0009055 A molecular function representing the directed movement of electrons from one molecular entity to another, typically mediated by electron carriers or acceptors, resulting in the transfer of energy and/or the reduction-oxidation (redox) transformation of chemical species. This activity is fundamental to various biological processes, including cellular respiration and photosynthesis, as well as numerous enzymatic reactions involved in metabolic pathways.

Sequence Features

Domain/signature hits from InterPro and related databases.

50 records
Show feature table
Start End DB Term Name
82 105 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
301 305 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
245 262 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
14 388 PANTHER PTHR19271 CYTOCHROME B
13 279 SUPERFAMILY SSF81342 Transmembrane di-heme cytochromes
13 279 InterPro IPR016174 Di-haem cytochrome, transmembrane
1 403 PIRSF PIRSF038885 COB
1 403 InterPro IPR030689 Cytochrome b
81 103 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
21 213 CDD cd00284 Cytochrome_b_N
21 213 InterPro IPR005797 Cytochrome b/b6, N-terminal
307 326 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
226 399 ProSiteProfiles PS51003 Cytochrome b/b6 C-terminal region profile.
226 399 InterPro IPR005798 Cytochrome b/b6, C-terminal
327 337 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
389 403 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
1 32 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
283 300 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
370 388 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
1 403 Gene3D G3DSA:1.20.810.10 Cytochrome Bc1 Complex; Chain C
1 403 InterPro IPR027387 Cytochrome b/b6-like domain superfamily
33 55 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
184 206 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
359 369 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
106 116 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
4 216 ProSiteProfiles PS51002 Cytochrome b/b6 N-terminal region profile.
4 216 InterPro IPR005797 Cytochrome b/b6, N-terminal
164 183 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
144 163 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
184 206 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
24 211 Pfam PF00033 Cytochrome b/b6/petB
24 211 InterPro IPR005797 Cytochrome b/b6, N-terminal
306 326 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
245 267 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
338 358 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
117 138 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
56 81 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
339 361 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
118 140 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
139 143 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
263 282 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
147 169 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
278 379 Pfam PF00032 Cytochrome b(C-terminal)/b6/petD
278 379 InterPro IPR005798 Cytochrome b/b6, C-terminal
207 244 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
281 396 SUPERFAMILY SSF81648 a domain/subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)
281 396 InterPro IPR036150 Cytochrome b/b6, C-terminal domain superfamily
1 403 FunFam G3DSA:1.20.810.10:FF:000004 Cytochrome b
366 388 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
33 55 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.

3D Structure

Selected loaded structure. Experimental PDB entries may cover only a portion of the sequence; predicted models typically cover the full protein.

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Structural evidence

0 + 1

Experimental PDB entries and predicted models. Click Switch to display a different structure in the viewer.

Entry Method Resolution Chain Coverage Links Status
AlphaFold PA4430
AlphaFold full sequence Viewing
Pocket details FPocket · P2Rank — toggle visibility and zoom from here, or open full viewer

Pockets (FPOCKET)

Showing top-ranked FPocket candidates by druggability. Druggability is color-coded: high (0.7 or higher), medium (0.4 to 0.69), low (below 0.4).

FPOCKET Sticks Spheres Surfaces Druggability Labels Zoom Positions
1 0.584
2 0.377
7 0.335
4 0.327

Ligand evidence

Ligands grouped by evidence source. PDB ligands keep the source crystal visible, and loaded crystals can be opened directly in the structure viewer.

61 records

Structural evidence inferred from similar proteins. The source crystal indicates where the ligand was observed; the UniProt column identifies the homologous protein carrying that ligand.

Show only:
Ligand Source crystal UniProt (homolog) MW · LogP · TPSA Lipinski PAINS SMILES
ANJ Q02761 548.6 Da LogP 3.48 TPSA 157.3 1 viol. ✓ Clean CCCCCC[C@@H]1[C@H]([C@@H](OC(=O)[C@H]([C@H](OC1…
BGL Q02761 292.4 Da LogP 0.16 TPSA 99.4 ✓ Ro5 ✓ Clean CCCCCCCCO[C@@H]1[C@H]([C@@H]([C@H](O[C@H]1O)CO)…
CDL Q1HBG9 1464.1 Da LogP 23.31 TPSA 242.6 3 viol. ✓ Clean CCCCCCCCCCCCCCCCCC(=O)OC[C@H](COP(=O)([O-])OCC(…
FES P05418 175.8 Da LogP 1.29 TPSA 0.0 ✓ Ro5 ✓ Clean S1[Fe]S[Fe]1
LOP Q02761 661.9 Da LogP 9.49 TPSA 134.4 2 viol. ✓ Clean CCCCCCCCCCCC(=O)OC[C@H](CO[P@](=O)(O)OCCN)OC(=O…
PEE Q1HBG9 744.0 Da LogP 11.61 TPSA 134.4 2 viol. ✓ Clean CCCCCCCC/C=C\CCCCCCCC(=O)OC[C@H](COP(=O)(O)OCCN…
PLX Q1HBG9 767.1 Da LogP 11.61 TPSA 114.7 2 viol. ✓ Clean CCCCCCCCCCCCCCCCC[C@@H](O)O[C@H](CO[C@@H](CCCCC…
SMA P05418 514.7 Da LogP 6.14 TPSA 87.4 2 viol. ✓ Clean C/C=C(\C)/C=C/C=C[C@@H]([C@@H](C)[C@H]([C@@H](C…
UQ2 Q02761 318.4 Da LogP 4.04 TPSA 52.6 ✓ Ro5 Alert CC1=C(C(=O)C(=C(C1=O)OC)OC)C\C=C(/C)\CCC=C(C)C
ZMP Q1HBG9 568.7 Da LogP 4.07 TPSA 162.3 1 viol. ✓ Clean CCCCCCCCCCCCCC(=O)SCCNC(=O)CCNC(=O)[C@H](C(C)(C…

PDB and ChEMBL records on this protein are shown in full. ChEMBL records from similar proteins are capped at the top 100 per protein (by pchembl) and ZINC at the top 50 (Tanimoto ≥ 0.5). ADME columns are descriptor-based screening flags, not experimental toxicity results.