Protein profile

KP13_02396

Sulfite reductase [NADPH] flavoprotein alpha-component

Genome: KpKP13

Gene: cysJ AHE42967.1 Structure source: AlphaFold + ColabFold UniProt A0A0H3GWU1
Amino acids 590
Annotations 9
Features 58
PDB binders 9
Druggability 0.412

Overview

Basic information about this protein and its source genome.

Accession
KP13_02396
Gene
cysJ AHE42967.1
Status
annotated
Amino acids
590
Structure source
AlphaFold + ColabFold

Target profile

Computed evidence for target prioritization.

Human off-target
hit
Human identity (%)
34.568
Human E-value
1.3699999999999998e-60
Gut microbiome off-target
hit
Essential (DEG)
N
DEG identity (%)
0.0
Localization
CytoplasmicMembrane
ColabFold pLDDT
91.57

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 0.412
Structure A0A0H3GWU1
Pocket Pocket 18
P2Rank 0.614
Structure A0A0H3GWU1
Pocket Pocket 1
ColabFold model
FPocket 0.299 · Pocket 34
P2Rank 0.541 · Pocket 1
Core conservation Accessory gene
Roary core
CoreCruncher accessory
Gut microbiome 128 / 4744 genomes with a hit
Normalized 0.027

Sequence

Primary amino-acid sequence viewer.

Functional Annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 8 GO

Enzyme Commission (EC)

1

Gene Ontology (GO)

8
  • GO:0004783 Catalysis of the reaction: hydrogen sulfide + 3 NADP+ + 3 H2O = sulfite + 3 NADPH + 3 H+.
  • GO:0010181 Binding to flavin mono nucleotide. Flavin mono nucleotide (FMN) is the coenzyme or the prosthetic group of various flavoprotein oxidoreductase enzymes.
  • GO:0019344 The chemical reactions and pathways resulting in the formation of L-cysteine, 2-amino-3-mercaptopropanoic acid.
  • 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: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:0000103 The pathways by which inorganic sulfate is processed and incorporated into sulfated compounds.
  • GO:0005829 The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
  • GO:0070814 The chemical reactions and pathways resulting in the formation of hydrogen sulfide, H2S.

Sequence Features

Domain/signature hits from InterPro and related databases.

58 records
Show feature table
Start End DB Term Name
1 590 Hamap MF_01541 Sulfite reductase [NADPH] flavoprotein alpha-component [cysJ].
1 590 InterPro IPR029758 Sulphite reductase [NADPH] flavoprotein, alpha chain, Proteobacteria
271 375 Gene3D G3DSA:1.20.990.10 -
271 375 InterPro IPR023173 NADPH-cytochrome p450 reductase, FAD-binding, alpha-helical domain superfamily
51 585 PANTHER PTHR19384 NITRIC OXIDE SYNTHASE-RELATED
45 210 FunFam G3DSA:3.40.50.360:FF:000018 Sulfite reductase [NADPH] flavoprotein alpha-component
221 415 Pfam PF00667 FAD binding domain
221 415 InterPro IPR003097 Sulfite reductase [NADPH] flavoprotein alpha-component-like, FAD-binding
2 590 NCBIfam TIGR01931 assimilatory sulfite reductase (NADPH) flavoprotein subunit
2 590 InterPro IPR010199 Sulphite reductase [NADPH] flavoprotein, alpha chain
231 590 CDD cd06199 SiR
54 200 SUPERFAMILY SSF52218 Flavoproteins
54 200 InterPro IPR029039 Flavoprotein-like superfamily
438 590 FunFam G3DSA:3.40.50.80:FF:000001 NADPH--cytochrome P450 reductase 1
539 547 PRINTS PR00371 Flavoprotein pyridine nucleotide cytochrome reductase signature
539 547 InterPro IPR001709 Flavoprotein pyridine nucleotide cytochrome reductase
410 419 PRINTS PR00371 Flavoprotein pyridine nucleotide cytochrome reductase signature
410 419 InterPro IPR001709 Flavoprotein pyridine nucleotide cytochrome reductase
447 466 PRINTS PR00371 Flavoprotein pyridine nucleotide cytochrome reductase signature
447 466 InterPro IPR001709 Flavoprotein pyridine nucleotide cytochrome reductase
472 481 PRINTS PR00371 Flavoprotein pyridine nucleotide cytochrome reductase signature
472 481 InterPro IPR001709 Flavoprotein pyridine nucleotide cytochrome reductase
485 496 PRINTS PR00371 Flavoprotein pyridine nucleotide cytochrome reductase signature
485 496 InterPro IPR001709 Flavoprotein pyridine nucleotide cytochrome reductase
261 271 PRINTS PR00371 Flavoprotein pyridine nucleotide cytochrome reductase signature
261 271 InterPro IPR001709 Flavoprotein pyridine nucleotide cytochrome reductase
516 532 PRINTS PR00371 Flavoprotein pyridine nucleotide cytochrome reductase signature
516 532 InterPro IPR001709 Flavoprotein pyridine nucleotide cytochrome reductase
377 384 PRINTS PR00371 Flavoprotein pyridine nucleotide cytochrome reductase signature
377 384 InterPro IPR001709 Flavoprotein pyridine nucleotide cytochrome reductase
271 375 FunFam G3DSA:1.20.990.10:FF:000004 Sulfite reductase [NADPH] flavoprotein alpha-component
58 186 Pfam PF00258 Flavodoxin
58 186 InterPro IPR008254 Flavodoxin/nitric oxide synthase
225 439 ProSiteProfiles PS51384 Ferredoxin reductase-type FAD binding domain profile.
225 439 InterPro IPR017927 FAD-binding domain, ferredoxin reductase-type
448 554 Pfam PF00175 Oxidoreductase NAD-binding domain
448 554 InterPro IPR001433 Oxidoreductase FAD/NAD(P)-binding
435 590 SUPERFAMILY SSF52343 Ferredoxin reductase-like, C-terminal NADP-linked domain
435 590 InterPro IPR039261 Ferredoxin-NADP reductase (FNR), nucleotide-binding domain
55 193 ProSiteProfiles PS50902 Flavodoxin-like domain profile.
55 193 InterPro IPR008254 Flavodoxin/nitric oxide synthase
44 210 Gene3D G3DSA:3.40.50.360 -
44 210 InterPro IPR029039 Flavoprotein-like superfamily
436 590 Gene3D G3DSA:3.40.50.80 -
436 590 InterPro IPR039261 Ferredoxin-NADP reductase (FNR), nucleotide-binding domain
1 590 PIRSF PIRSF000207 SiR-FP_CysJ
1 590 InterPro IPR010199 Sulphite reductase [NADPH] flavoprotein, alpha chain
218 437 SUPERFAMILY SSF63380 Riboflavin synthase domain-like
218 437 InterPro IPR017938 Riboflavin synthase-like beta-barrel
224 430 Gene3D G3DSA:2.40.30.10 Translation factors
160 179 PRINTS PR00369 Flavodoxin signature
160 179 InterPro IPR001094 Flavodoxin-like
56 69 PRINTS PR00369 Flavodoxin signature
56 69 InterPro IPR001094 Flavodoxin-like
104 115 PRINTS PR00369 Flavodoxin signature
104 115 InterPro IPR001094 Flavodoxin-like
136 146 PRINTS PR00369 Flavodoxin signature
136 146 InterPro IPR001094 Flavodoxin-like

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_A0A0H3GWU1
AlphaFold full sequence Viewing
ColabFold KP13_02396
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
18 0.412

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 5.24 0.244
2 2.93 0.094
3 2.88 0.091
4 2.15 0.05
5 2.02 0.044

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.

59 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
2AM P00388 347.2 Da LogP -1.86 TPSA 186.1 ✓ Ro5 ✓ Clean c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)…
A2P P00455 427.2 Da LogP -1.75 TPSA 232.6 2 viol. ✓ Clean c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)…
CXS W8SX42 221.3 Da LogP 1.19 TPSA 66.4 ✓ Ro5 ✓ Clean C1CCC(CC1)NCCCS(=O)(=O)O
EN6 P00323 489.5 Da LogP 4.22 TPSA 87.4 ✓ Ro5 ✓ Clean Cc1c(c(n(n1)c2cccc3c2sc(c3)Cc4cccc(c4)C(F)(F)F)…
FDA B4G043 787.6 Da LogP -1.75 TPSA 363.3 3 viol. ✓ Clean Cc1cc2c(cc1C)N(C3=C(N2)C(=O)NC(=O)N3)C[C@@H]([C…
FLC P00323 189.1 Da LogP -5.25 TPSA 140.6 ✓ Ro5 ✓ Clean C(C(=O)[O-])C(CC(=O)[O-])(C(=O)[O-])O
NCA B4G043 122.1 Da LogP 0.18 TPSA 56.0 ✓ Ro5 ✓ Clean c1cc(cnc1)C(=O)N
OLC P00323 356.5 Da LogP 4.92 TPSA 66.8 ✓ Ro5 ✓ Clean CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](CO)O
RBF P00323 376.4 Da LogP -1.72 TPSA 161.6 ✓ Ro5 ✓ Clean Cc1cc2c(cc1C)N(C3=NC(=O)NC(=O)C3=N2)C[C@@H]([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.