KpATCC43816 Protein target profile

molybdopterin synthase sulfurylase MoeB

Accession: VK055_1668

Gene: moeB AIK80288.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism 1 reaction UniProt A0A0H3GQM7
Length 251
Pocket druggability (P2Rank · AlphaFold DB model) 0.899
Metabolic reactions 1
Chokepoint Yes
Direct ligand evidence 0 86 total records
Functional annotation 1 EC 7 GO
Target summary

Strong target candidate with converging metabolic, structural and chemical evidence.

Automated synthesis of the evidence currently loaded. Review the underlying records before prioritizing this protein.

Terms and data sources used on this page

PDB: experimentally determined structures from the Protein Data Bank. These are the strongest structural evidence, but may cover only part of the protein.

AlphaFold DB model: a precomputed predicted structure downloaded from AlphaFold Database/UniProt, not an experiment performed here.

ColabFold model: a predicted structure generated for this workspace; interpret it with coverage and confidence.

pLDDT: confidence score for predicted structures. High values support local geometry; low values mean the region should not drive pocket interpretation.

FPocket / P2Rank: software tools that predict possible ligand-binding pockets on a 3D structure. They are useful screening signals, not experimental validation.

Druggability: a pocket-based estimate of whether a small molecule could bind productively. It does not mean a drug already exists.

PDB ligand: a compound observed in an experimental structure. Direct same-protein records are stronger than homolog-transferred records.

ChEMBL: a public database of measured compound bioactivity. Direct entries are stronger than entries transferred from similar proteins.

ZINC: a purchasable-compound database. Here it marks proposed candidates from chemical similarity, not measured binders.

LigQ / LigQ_2: an internal Target pipeline step that gathers PDB, ChEMBL, and ZINC ligand evidence for each protein.

Off-target: sequence similarity to proteins we prefer not to hit, such as human proteins or beneficial gut microbiome proteins.

DEG: Database of Essential Genes. A match suggests the protein resembles genes known to be essential in other organisms.

Roary / CoreCruncher: pan-genome tools used to decide whether a gene is core across analyzed strains or accessory/strain-specific.

EC / GO: functional annotations: EC describes enzyme reactions; GO describes biological process, molecular function, or cellular component.

KEGG pathway: a curated metabolic route label used here to group reactions imported from the metabolic model.

Chokepoint: a metabolic reaction that is the only producer or consumer of a metabolite in the imported model.

Prioritization evidence

Selectivity, essentiality, structural confidence, conservation, and predicted binding-site evidence.

Off-target risk

Human off-target
Hit
Human identity (%)
47.917 Lower values reduce human off-target concern.
Human E-value
2.07e-07
Gut microbiome similarity
3.2% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

Essential (DEG)
Y
DEG identity (%)
62.447 Higher values support similarity to known essential genes.
DEG E-value
8.34e-107 Smaller values mean stronger essential-gene similarity.

Structure confidence

ColabFold pLDDT
95.36 0-100 confidence; >70 supports local structural interpretation.

Binding-site evidence

AlphaFold DB / UniProt model

P2Rank's binding-site probability is the primary druggability signal shown across the app; FPocket's druggability score is shown alongside it for comparison. Both estimate small-molecule pocket quality after applying the curated structure priority — neither is experimental binding evidence. The 3D viewer may show a different loaded structure, so visible pockets can differ.

Druggability (P2Rank) 0.899
Structure A0A0H3GQM7
Pocket Pocket 1
Druggability (FPocket) 0.13
Structure A0A0H3GQM7
Pocket Pocket 3
ColabFold model
P2Rank 0.843 · Pocket 1
FPocket 0.815 · Pocket 2
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 154 / 4744 genomes with a hit
Prevalence 3.2%

Metabolic context

Reactions catalyzed, pathway membership, and centrality in the genome-scale metabolic network.

Explore metabolic network

Attractive metabolic target: catalyzes a producing & consuming chokepoint reaction, no isoenzyme backup detected, more central than 98.1% of genes in this genome.

Relative network centrality 98.1% more central than 98.1% of genes in this genome
Chokepoint Chokepoint gene
Pathways

No specific KEGG pathway assigned - this reaction either has no KEGG mapping, or only matches a generic overview map with no route-level information.

Catalyzed reaction

1 reaction mapped to this gene in the metabolic model. Open the full network to see each one, with substrates/products and the reaction-reaction map.

Imported from KpATCC43816.sbml · 2026-07-09

Sequence

Primary amino-acid sequence viewer.

MTVELSDEEMLRYNRQIVLRGFDFDGQERLKAARVLVVGLGGLGCAAAQYLAAAGVGQLTLLDFDTVSLSNLQRQTLHSDATLGQPKVDSAREALARINPHVRLVPLNALLDEAALAAQIADHDLVLDCTDNVAIRNQLNVGCFQHKTPLVSGAAIRMEGQISVFTYQDGEPCYRCLSRLFGENALTCVEAGVMAPLVGTIGSLQAMEAIKLLSGYGTPASGKIVIYDAMTCQFREMRLMRHPQCEVCGSH

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 7 GO

Subcellular localization

Localization
Cytoplasmic

Enzyme Commission (EC)

1

Gene Ontology (GO)

7
  • GO:0006777 The chemical reactions and pathways resulting in the formation of the Mo-molybdopterin cofactor, essential for the catalytic activity of some enzymes. The cofactor consists of a mononuclear molybdenum (Mo) ion coordinated by one or two molybdopterin ligands.
  • GO:0008641 Catalysis of the activation of small proteins, such as ubiquitin or ubiquitin-like proteins, through the formation of an ATP-dependent high-energy thiolester bond.
  • GO:0005829 The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
  • GO:0005524 Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
  • GO:0061605 Catalysis of the reaction: ATP [molybdopterin-synthase sulfur-carrier protein]-Gly-Gly = diphosphate [molybdopterin-synthase sulfur-carrier protein]-Gly-Gly-AMP.
  • GO:0008146 Catalysis of the transfer of a sulfate group from 3'-phosphoadenosine 5'-phosphosulfate to the hydroxyl group of an acceptor, producing the sulfated derivative and 3'-phosphoadenosine 5'-phosphate.
  • GO:0004792 Catalysis of the reaction: thiosulfate + hydrogen cyanide = thiocyanate + sulfite + 2 H+.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

12 records
Show feature table
Start End DB Term Name
4 249 SUPERFAMILY SSF69572 Activating enzymes of the ubiquitin-like proteins
4 249 InterPro IPR035985 Ubiquitin-activating enzyme
13 247 Pfam PF00899 ThiF family
13 247 InterPro IPR000594 THIF-type NAD/FAD binding fold
8 226 PANTHER PTHR10953 UBIQUITIN-ACTIVATING ENZYME E1
8 226 InterPro IPR045886 ThiF/MoeB/HesA family
9 248 NCBIfam TIGR02355 molybdopterin-synthase adenylyltransferase MoeB
9 248 InterPro IPR012730 Molybdopterin synthase sulfurylase MoeB
12 239 CDD cd00757 ThiF_MoeB_HesA_family
6 251 FunFam G3DSA:3.40.50.720:FF:000033 Adenylyltransferase and sulfurtransferase MOCS3
2 250 Gene3D G3DSA:3.40.50.720 -
35 57 TMHMM TMhelix 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; AlphaFold DB and ColabFold models typically cover the full protein but remain computational predictions.

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Pocket score High Medium Low
How colors and pocket overlays are used
Uniform protein color marks the displayed model as a single molecular object.
Experimental PDB structures may be colored by chain to distinguish subunits or copies present in the file.
Pocket colors and alpha spheres are evidence overlays for predicted binding cavities; they are not alternative protein chains.
'Alpha spheres' is FPocket's own cavity-shape geometry, imported when available and aligned with the loaded structure.
'Pocket atoms'/'Predicted site atoms' show the pocket's residue atoms instead: P2Rank reports residues rather than alpha spheres, and FPocket falls back to this when alpha-sphere geometry is unavailable or doesn't align.
'No pocket geometry' means neither alpha spheres nor residue-position data could be found for that pocket; the layer just highlights the same residues as 'Nearby residues'.
Pocket details Inspect a specific pocket, or open the full viewer

Binding pockets · P2Rank

Druggability (P2Rank): high ≥ 0.5 · medium 0.2–0.49 · low < 0.2

Pocket 1 P2Rank #1
0.899
Show in viewer
Surrounding area
Pocket 2 P2Rank #2
0.551
Show in viewer
Surrounding area
Pocket 3 P2Rank #3
0.016
Show in viewer
Surrounding area
All structural evidence 0 experimental · 2 predicted

Structural evidence

0 + 2

Experimental PDB entries plus predicted AlphaFold DB or ColabFold models. Click Switch to display a different loaded structure in the viewer.

Entry Method Resolution Chain Coverage Links Status
AlphaFold DB AF_A0A0H3GQM7
AlphaFold DB full sequence Viewing
ColabFold VK055_1668
ColabFold full sequence Loaded

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
Chemistry signal

Structural and bioactivity evidence are both available for this target.

Direct evidence 0 same-protein records
Transferred evidence 36 records from similar proteins
Structural ligands 7 0 loaded crystals
Measured bioactivity 29 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
61T PDB via homolog 519.5 Da · LogP 1.75 · TPSA 152.1 Open detail RCSB PDB
6O2 PDB via homolog Detail RCSB PDB
APC PDB via homolog Detail RCSB PDB
B39 PDB via homolog Detail RCSB PDB
FHJ PDB via homolog Detail RCSB PDB

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
61T RCSB PDB P22515 519.5 Da LogP 1.75 TPSA 152.1 1 viol. ✓ Clean c1cc(cc(c1)SC(F)(F)F)c2cc3nccc(n3n2)N[C@@H]4C[C…
6O2 RCSB PDB P22515 446.4 Da LogP -0.61 TPSA 174.7 1 viol. ✓ Clean C#Cc1cccc(c1)Nc2c3c(ncn2)n(cn3)C4C(C(C(O4)COS(=…
APC RCSB PDB Q47506 505.2 Da LogP -1.52 TPSA 269.9 3 viol. ✓ Clean c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)…
B39 RCSB PDB P22515 443.5 Da LogP 2.06 TPSA 132.4 ✓ Ro5 ✓ Clean c1ccc2c(c1)CC[C@@H]2Nc3c4ccn(c4ncn3)[C@@H]5C[C@…
FHJ RCSB PDB Q9UBE0 421.5 Da LogP 3.30 TPSA 73.9 ✓ Ro5 ✓ Clean Cc1ccc(cc1)C[C@@H]([C@@]23C=C[C@@H](O2)[C@@H]([…
ND7 RCSB PDB Q47506 346.2 Da LogP -1.90 TPSA 191.9 ✓ Ro5 ✓ Clean c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)…
POP RCSB PDB Q47506 176.0 Da LogP -2.08 TPSA 129.9 ✓ Ro5 ✓ Clean O[P@@](=O)([O-])O[P@@](=O)(O)[O-]

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.

Cross-references

External database identifiers for this protein, its structures, ligands, and metabolic reactions.