KpKP13 Protein target profile

Sulfate adenylyltransferase subunit 1

Accession: KP13_02402

Gene: cysN AHE42973.1 3D evidence: AlphaFold DB model + ColabFold model UniProt A0A0H3GXG7
Length 475
Pocket druggability (P2Rank · AlphaFold DB model) 0.745
Direct ligand evidence 0 55 total records
Functional annotation 1 EC 7 GO
Target summary

Target candidate with partial support; inspect missing evidence before prioritizing.

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 (%)
37.059 Lower values reduce human off-target concern.
Human E-value
2.19e-28
Gut microbiome similarity
7.2% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

Essential (DEG)
Y
DEG identity (%)
62.796 Higher values support similarity to known essential genes.
DEG E-value
0.0 Smaller values mean stronger essential-gene similarity.

Structure confidence

ColabFold pLDDT
85.02 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) 0.745
Structure A0A0H3GXG7
Pocket Pocket 1
Druggability (FPocket) 0.257
Structure A0A0H3GXG7
Pocket Pocket 8
ColabFold model
P2Rank 0.718 · Pocket 1
FPocket 0.17 · Pocket 20
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 340 / 4744 genomes with a hit
Prevalence 7.2%

Sequence

Primary amino-acid sequence viewer.

MNTTIAQQIANEGGVEAYLHAQQHKSLLRFLTCGSVDDGKSTLIGRLLHDTRQIYEDQLSSLHNDSKRHGTQGEKLDLALLVDGLQAEREQGITIDVAYRYFSTEKRKFIIADTPGHEQYTRNMATGASTCDLAILLIDARKGVLDQTRRHSFISTLLGIKHLVVAVNKMDLVEFSEARFNEIREDYLTFAEQLPGNLDIRFVPLSALEGDNVASQSANMPWYSGPTLLEVLETVEIQRVVESQPLRFPVQYVNRPNLDFRGFSGTVASGTVQVGQRLKVLPSGVESSVARIVTFDGDLQEAAAGEAITLVLKDEIDISRGDLLVDAQASLPAVQSASIDVVWMAEQPLTPGQSYDIKIAGKKTRARVDAIRYQVDINNLTQREVESLPLNGIGLVELTFDEPLVLDPYQQNPVTGGLIFIDRLTNVTVGAGMVNEPHLQASTSASQYSAFELELNQLIRKHFPHWDARDLLGGK

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:0003924 Catalysis of the reaction: GTP + H2O = GDP + H+ + phosphate.
  • GO:0005525 Binding to GTP, guanosine triphosphate.
  • GO:0006790 The chemical reactions and pathways involving the nonmetallic element sulfur or compounds that contain sulfur, such as the amino acids methionine and cysteine or the tripeptide glutathione.
  • GO:0005524 Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
  • GO:0004781 Catalysis of the reaction: ATP + H+ + sulfate = adenosine 5'-phosphosulfate + diphosphate.
  • GO:0070814 The chemical reactions and pathways resulting in the formation of hydrogen sulfide, H2S.
  • GO:0000103 The pathways by which inorganic sulfate is processed and incorporated into sulfated compounds.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

42 records
Show feature table
Start End DB Term Name
241 330 FunFam G3DSA:2.40.30.10:FF:000027 Sulfate adenylyltransferase subunit 1
23 436 PANTHER PTHR23115 TRANSLATION FACTOR
83 98 ProSitePatterns PS00301 Translational (tr)-type guanine nucleotide-binding (G) domain signature.
83 98 InterPro IPR031157 Tr-type G domain, conserved site
8 240 FunFam G3DSA:3.40.50.300:FF:000119 Sulfate adenylyltransferase subunit 1
242 329 Gene3D G3DSA:2.40.30.10 Translation factors
27 232 Pfam PF00009 Elongation factor Tu GTP binding domain
27 232 InterPro IPR000795 Translational (tr)-type GTP-binding domain
34 214 NCBIfam TIGR00231 small GTP-binding protein domain
34 214 InterPro IPR005225 Small GTP-binding protein domain
25 239 ProSiteProfiles PS51722 Translational (tr)-type guanine nucleotide-binding (G) domain profile.
25 239 InterPro IPR000795 Translational (tr)-type GTP-binding domain
28 434 NCBIfam TIGR02034 sulfate adenylyltransferase, large subunit
28 434 InterPro IPR011779 Sulphate adenylyltransferase, large subunit
338 434 SUPERFAMILY SSF50465 EF-Tu/eEF-1alpha/eIF2-gamma C-terminal domain
338 434 InterPro IPR009001 Translation elongation factor EF1A/initiation factor IF2gamma, C-terminal
333 435 Gene3D G3DSA:2.40.30.10 Translation factors
243 328 SUPERFAMILY SSF50447 Translation proteins
243 328 InterPro IPR009000 Translation protein, beta-barrel domain superfamily
6 240 Gene3D G3DSA:3.40.50.300 -
6 240 InterPro IPR027417 P-loop containing nucleoside triphosphate hydrolase
19 475 Hamap MF_00062 Sulfate adenylyltransferase subunit 1 [cysN].
19 475 InterPro IPR011779 Sulphate adenylyltransferase, large subunit
333 434 CDD cd04095 CysN_NoDQ_III
333 434 InterPro IPR044139 Sulfate adenylyltransferase subunit CysN, Domain III
29 239 CDD cd04166 CysN_ATPS
29 239 InterPro IPR041757 Sulfate adenylyltransferase subunit CysN, GTP-binding domain
246 326 CDD cd03695 CysN_NodQ_II
246 326 InterPro IPR044138 Sulfate adenylyltransferase subunit CysN, Domain II
126 137 PRINTS PR00315 GTP-binding elongation factor signature
126 137 InterPro IPR000795 Translational (tr)-type GTP-binding domain
163 172 PRINTS PR00315 GTP-binding elongation factor signature
163 172 InterPro IPR000795 Translational (tr)-type GTP-binding domain
110 120 PRINTS PR00315 GTP-binding elongation factor signature
110 120 InterPro IPR000795 Translational (tr)-type GTP-binding domain
29 42 PRINTS PR00315 GTP-binding elongation factor signature
29 42 InterPro IPR000795 Translational (tr)-type GTP-binding domain
90 98 PRINTS PR00315 GTP-binding elongation factor signature
90 98 InterPro IPR000795 Translational (tr)-type GTP-binding domain
332 435 FunFam G3DSA:2.40.30.10:FF:000031 Sulfate adenylyltransferase subunit 1
24 253 SUPERFAMILY SSF52540 P-loop containing nucleoside triphosphate hydrolases
24 253 InterPro IPR027417 P-loop containing nucleoside triphosphate hydrolase

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
0.745
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Surrounding area
Pocket 2 P2Rank #2
0.199
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Surrounding area
Pocket 3 P2Rank #3
0.187
Likely same site as FPocket 6 1.6 Å 15 shared residues 100% of smaller site
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Surrounding area
Pocket 4 P2Rank #4
0.157
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Surrounding area

Binding pockets · FPocket

Druggability (FPocket): high ≥ 0.7 · medium 0.4–0.69 · low < 0.4

Pocket 1 FPocket #8
0.257
Show in viewer
Surrounding area
Pocket 2 FPocket #6
0.233
Likely same site as P2Rank 3 1.6 Å 15 shared residues 100% of smaller site
Show in viewer
Surrounding area
Residue sets
UniProt: Binding site:113-117
UniProt: Binding site:168-171
UniProt: Binding site:34-41
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_A0A0H3GXG7
AlphaFold DB full sequence Viewing
ColabFold KP13_02402
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.

55 records
Chemistry signal

Structural and bioactivity evidence are both available for this target.

Direct evidence 0 same-protein records
Transferred evidence 5 records from similar proteins
Structural ligands 4 0 loaded crystals
Measured bioactivity 1 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
5GP PDB via homolog 363.2 Da · LogP -2.57 · TPSA 206.0 Open detail RCSB PDB
7C4 PDB via homolog Detail RCSB PDB
GNP PDB via homolog Detail RCSB PDB
GPE PDB via homolog Detail RCSB PDB
CHEMBL451930 ChEMBL via homolog Detail ChEMBL

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
5GP RCSB PDB P02994 363.2 Da LogP -2.57 TPSA 206.0 1 viol. ✓ Clean c1nc2c(n1[C@H]3[C@@H]([C@@H]([C@H](O3)COP(=O)(O…
7C4 RCSB PDB P68105 1112.4 Da LogP 2.32 TPSA 287.9 2 viol. ✓ Clean CC[C@H](C)[C@@H]1[C@H](CC(=O)O[C@H](C(=O)[C@@H]…
GNP RCSB PDB P32769 522.2 Da LogP -2.76 TPSA 301.9 3 viol. ✓ Clean c1nc2c(n1[C@H]3[C@@H]([C@@H]([C@H](O3)CO[P@](=O…
GPE RCSB PDB Q71V39 215.1 Da LogP -1.57 TPSA 122.2 ✓ Ro5 ✓ Clean C(CO[P@](=O)(O)OC[C@@H](CO)O)N

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.