Protein profile

KP13_31481

Fumarate reductase flavoprotein subunit

Genome: KpKP13

Gene: frdA AHE46751.1 Structure source: AlphaFold + ColabFold UniProt A0A0H3GI02
Amino acids 596
Annotations 10
Features 42
PDB binders 36
Druggability 0.997

Overview

Basic information about this protein and its source genome.

Accession
KP13_31481
Gene
frdA AHE46751.1
Status
annotated
Amino acids
596
Structure source
AlphaFold + ColabFold

Target profile

Computed evidence for target prioritization.

Human off-target
hit
Human identity (%)
43.99
Human E-value
2.57e-100
Gut microbiome off-target
hit
Essential (DEG)
Y
DEG identity (%)
54.352
DEG E-value
0.0
Localization
CytoplasmicMembrane
ColabFold pLDDT
96.29

Selected Druggability evidence

AlphaFold / UniProt model

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 0.997
Structure A0A0H3GI02
Pocket Pocket 1
P2Rank 0.975
Structure A0A0H3GI02
Pocket Pocket 1
ColabFold model
FPocket 0.737 · Pocket 1
P2Rank 0.983 · Pocket 1
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 157 / 4744 genomes with a hit
Normalized 0.033

Sequence

Primary amino-acid sequence viewer.

Functional Annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 9 GO

Enzyme Commission (EC)

1

Gene Ontology (GO)

9
  • GO:0022900 A process in which a series of electron carriers operate together to transfer electrons from donors to any of several different terminal electron acceptors.
  • 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:0009061 The enzymatic release of energy from inorganic and organic compounds (especially carbohydrates and fats) which uses compounds other than oxygen (e.g. nitrate, sulfate) as the terminal electron acceptor.
  • GO:0016627 Catalysis of an oxidation-reduction (redox) reaction in which a CH-CH group acts as a hydrogen or electron donor and reduces a hydrogen or electron acceptor.
  • GO:0050660 Binding to FAD, flavin-adenine dinucleotide, the coenzyme or the prosthetic group of various flavoprotein oxidoreductase enzymes, in either the oxidized form, FAD, or the reduced form, FADH2.
  • GO:0005886 The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
  • 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.
  • GO:0008177 Catalysis of the reaction: a quinone + succinate = a quinol + fumarate.
  • GO:0006113 The metabolic process that uses oxidation-reduction reactions of organic compounds and substrate-level phosphorylation for the generation of adenosine triphosphate (ATP), without consuming oxygen and is independent of electron transport chains.

Sequence Features

Domain/signature hits from InterPro and related databases.

42 records
Show feature table
Start End DB Term Name
28 596 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
237 366 Gene3D G3DSA:3.90.700.10 Succinate dehydrogenase/fumarate reductase flavoprotein, catalytic domain
237 366 InterPro IPR027477 Succinate dehydrogenase/fumarate reductase flavoprotein, catalytic domain superfamily
8 18 Phobius SIGNAL_PEPTIDE_H_REGION Hydrophobic region of a signal peptide.
543 577 Gene3D G3DSA:4.10.80.40 succinate dehydrogenase protein domain
19 27 Phobius SIGNAL_PEPTIDE_C_REGION C-terminal region of a signal peptide.
1 7 Phobius SIGNAL_PEPTIDE_N_REGION N-terminal region of a signal peptide.
434 490 CDD cd00167 SANT
434 490 InterPro IPR001005 SANT/Myb domain
423 443 Coils Coil Coil
7 251 FunFam G3DSA:3.50.50.60:FF:000017 Fumarate reductase flavoprotein subunit
543 577 FunFam G3DSA:4.10.80.40:FF:000003 Fumarate reductase flavoprotein subunit
375 382 PRINTS PR00411 Pyridine nucleotide disulphide reductase class-I signature
7 29 PRINTS PR00411 Pyridine nucleotide disulphide reductase class-I signature
7 581 NCBIfam TIGR01812 succinate dehydrogenase or fumarate reductase, flavoprotein subunit
7 581 InterPro IPR014006 Succinate dehydrogenase/fumarate reductase, flavoprotein subunit
227 358 SUPERFAMILY SSF56425 Succinate dehydrogenase/fumarate reductase flavoprotein, catalytic domain
227 358 InterPro IPR027477 Succinate dehydrogenase/fumarate reductase flavoprotein, catalytic domain superfamily
7 397 Pfam PF00890 FAD binding domain
7 397 InterPro IPR003953 FAD-dependent oxidoreductase 2, FAD binding domain
2 416 SUPERFAMILY SSF51905 FAD/NAD(P)-binding domain
2 416 InterPro IPR036188 FAD/NAD(P)-binding domain superfamily
1 574 PIRSF PIRSF000171 SDHA_APRA_LASPO
453 581 Pfam PF02910 Fumarate reductase flavoprotein C-term
453 581 InterPro IPR015939 Fumarate reductase/succinate dehydrogenase flavoprotein-like, C-terminal
43 52 ProSitePatterns PS00504 Fumarate reductase / succinate dehydrogenase FAD-binding site.
43 52 InterPro IPR003952 Fumarate reductase/succinate dehydrogenase, FAD-binding site
360 382 PRINTS PR00368 FAD-dependent pyridine nucleotide reductase signature
8 27 PRINTS PR00368 FAD-dependent pyridine nucleotide reductase signature
423 542 Gene3D G3DSA:1.20.58.100 -
424 540 FunFam G3DSA:1.20.58.100:FF:000001 Succinate dehydrogenase flavoprotein subunit (SdhA)
237 366 FunFam G3DSA:3.90.700.10:FF:000003 Fumarate reductase flavoprotein subunit
473 493 Coils Coil Coil
5 575 PANTHER PTHR11632 SUCCINATE DEHYDROGENASE 2 FLAVOPROTEIN SUBUNIT
5 575 InterPro IPR030664 FAD-dependent oxidoreductase SdhA/FrdA/AprA
444 590 SUPERFAMILY SSF46977 Succinate dehydrogenase/fumarate reductase flavoprotein C-terminal domain
444 590 InterPro IPR037099 Fumarate reductase/succinate dehydrogenase flavoprotein-like, C-terminal domain superfamily
7 409 Gene3D G3DSA:3.50.50.60 -
7 409 InterPro IPR036188 FAD/NAD(P)-binding domain superfamily
1 27 Phobius SIGNAL_PEPTIDE Signal peptide region
3 582 NCBIfam TIGR01176 fumarate reductase (quinol) flavoprotein subunit
3 582 InterPro IPR005884 Fumarate reductase, flavoprotein subunit

3D Structure

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

3D visualization script Full viewer

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Structural evidence

0 + 2

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

Entry Method Resolution Chain Coverage Links Status
AlphaFold AF_A0A0H3GI02
AlphaFold full sequence Viewing
ColabFold KP13_31481
ColabFold full sequence Loaded
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 0.997
22 0.862
19 0.69

Pockets (P2RANK)

Showing top-ranked P2Rank candidates by probability. Probability is color-coded per P2Rank calibration: high (≥ 0.5), medium (0.2 – 0.49), low (< 0.2).

P2RANK Sticks Spheres Surfaces Score Probability Labels Zoom Positions
1 30.87 0.936
2 8.55 0.457
3 7.12 0.369
4 6.22 0.311
5 1.98 0.042

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.

86 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
3NP P00363 119.1 Da LogP -0.26 TPSA 80.4 ✓ Ro5 ✓ Clean C(C[N+](=O)[O-])C(=O)O
3PE Q9YHT1 748.1 Da LogP 12.06 TPSA 134.4 2 viol. ✓ Clean CCCCCCCCCCCCCCCCCC(=O)OC[C@H](COP(=O)(O)OCCN)OC…
AT5 Q9YHT1 366.2 Da LogP 2.79 TPSA 88.6 ✓ Ro5 ✓ Clean C[C@@H](C[C@H](C)C(=O)C1=C(C(=C(NC1=O)OC)OC)O)[…
BOL Q0QF01 323.1 Da LogP 3.54 TPSA 29.1 ✓ Ro5 ✓ Clean c1ccc(cc1)NC(=O)c2ccccc2I
BRS P00363 322.7 Da LogP 4.01 TPSA 106.5 ✓ Ro5 ✓ Clean C[C@H](c1ccc(cc1)Cl)c2cc(cc(c2O)[N+](=O)[O-])[N…
CBE P0AC41 235.3 Da LogP 2.62 TPSA 38.3 ✓ Ro5 ✓ Clean CC1=C(SCCO1)C(=O)Nc2ccccc2
CDN P0AC41 1151.5 Da LogP 14.77 TPSA 249.6 4 viol. ✓ Clean CCCCCCCCCCCCCCC(O)O[C@H](COC(CCCCC)O)CO[P@@](=O…
CE1 P00363 538.8 Da LogP 4.03 TPSA 94.1 1 viol. ✓ Clean CCCCCCCCCCCCOCCOCCOCCOCCOCCOCCOCCOCCO
DNT P0AC41 282.3 Da LogP 3.89 TPSA 106.5 ✓ Ro5 ✓ Clean CCCCCC(C)c1cc(cc(c1O)[N+](=O)[O-])[N+](=O)[O-]
EPH P0AC41 709.9 Da LogP 10.16 TPSA 134.4 2 viol. ✓ Clean CCCC=CCC=CCCCCCCCC(=O)O[C@H](COC(=O)CCCCCCC=CCC…
F3S P00363 295.8 Da LogP 2.59 TPSA 0.0 ✓ Ro5 ✓ Clean S1[Fe]2S[Fe]3[S]2[Fe]1S3
F6A Q0QF01 341.3 Da LogP 5.62 TPSA 29.1 1 viol. ✓ Clean c1ccc(cc1)c2cccc(c2)NC(=O)c3ccccc3C(F)(F)F
F7A Q0QF01 357.3 Da LogP 5.75 TPSA 38.3 1 viol. ✓ Clean c1ccc(cc1)Oc2cccc(c2)NC(=O)c3ccccc3C(F)(F)F
F9A Q0QF01 322.3 Da LogP 4.02 TPSA 32.3 ✓ Ro5 ✓ Clean CN(C)Cc1cccc(c1)NC(=O)c2ccccc2C(F)(F)F
FD8 Q0QF01 447.3 Da LogP 6.45 TPSA 38.3 1 viol. ✓ Clean c1ccc(c(c1)C(=O)Nc2cccc(c2)Oc3c(c(c(c(c3F)F)F)F…
FES P00363 175.8 Da LogP 1.29 TPSA 0.0 ✓ Ro5 ✓ Clean S1[Fe]S[Fe]1
FLC P00363 189.1 Da LogP -5.25 TPSA 140.6 ✓ Ro5 ✓ Clean C(C(=O)[O-])C(CC(=O)[O-])(C(=O)[O-])O
FTN Q9YHT1 323.3 Da LogP 4.74 TPSA 38.3 ✓ Ro5 ✓ Clean CC(C)Oc1cccc(c1)NC(=O)c2ccccc2C(F)(F)F
FUM P00363 116.1 Da LogP -0.29 TPSA 74.6 ✓ Ro5 ✓ Clean C(=C/C(=O)O)\C(=O)O
GUA P00363 132.1 Da LogP 0.33 TPSA 74.6 ✓ Ro5 ✓ Clean C(CC(=O)O)CC(=O)O
HQO P00363 259.3 Da LogP 3.69 TPSA 47.2 ✓ Ro5 Alert CCCCCCCc1cc(c2ccccc2[n+]1[O-])O
LMT T2GB49 510.6 Da LogP -0.45 TPSA 178.5 3 viol. ✓ Clean CCCCCCCCCCCCO[C@H]1[C@@H]([C@H]([C@@H]([C@H](O1…
MLI P00363 102.0 Da LogP -3.12 TPSA 80.3 ✓ Ro5 ✓ Clean C(C(=O)[O-])C(=O)[O-]
MQ7 P00363 649.0 Da LogP 14.10 TPSA 34.1 2 viol. Alert CC1=C(C(=O)c2ccccc2C1=O)C\C=C(/C)\CC\C=C(/C)\CC…
MRN Q0QF01 269.3 Da LogP 4.03 TPSA 38.3 ✓ Ro5 ✓ Clean Cc1ccccc1C(=O)Nc2cccc(c2)OC(C)C
N1M Q0QF01 261.1 Da LogP 1.65 TPSA 29.1 ✓ Ro5 ✓ Clean CNC(=O)c1ccccc1I
OAA P00363 131.1 Da LogP -2.22 TPSA 94.5 ✓ Ro5 ✓ Clean C(C(=O)C(=O)O)C(=O)[O-]
PBF P00363 269.3 Da LogP 1.87 TPSA 80.4 ✓ Ro5 ✓ Clean c1ccc(cc1)C(=O)c2ccc(cc2)C[C@@H](C(=O)O)N
PCI Q0QF01 266.3 Da LogP 4.66 TPSA 20.2 ✓ Ro5 ✓ Clean c1(c(c(c(c(c1Cl)Cl)Cl)Cl)Cl)O
SLI Q0QF01 213.2 Da LogP 2.64 TPSA 49.3 ✓ Ro5 ✓ Clean c1ccc(cc1)NC(=O)c2ccccc2O
TEO P0AC41 132.1 Da LogP -3.14 TPSA 103.7 ✓ Ro5 ✓ Clean C(=C(\O)/[O-])\[C@H](C(=O)[O-])O
TFZ Q0QF01 265.2 Da LogP 3.96 TPSA 29.1 ✓ Ro5 ✓ Clean c1ccc(cc1)NC(=O)c2ccccc2C(F)(F)F
TMG Q0QF01 201.3 Da LogP 2.69 TPSA 41.6 ✓ Ro5 ✓ Clean c1ccc2c(c1)[nH]c(n2)c3cscn3
TTF Q0QF01 222.2 Da LogP 2.45 TPSA 34.1 ✓ Ro5 ✓ Clean c1cc(sc1)C(=O)CC(=O)C(F)(F)F
UMQ Q9YHT1 496.6 Da LogP -0.84 TPSA 178.5 2 viol. ✓ Clean CCCCCCCCCCCO[C@H]1[C@@H]([C@H]([C@@H]([C@H](O1)…
UQ2 P0AC41 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

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.