Protein target profile

VK055_2094

htpG

Genome: KpATCC43816 Gene: htpG AIK80699.1 3D evidence: AlphaFold DB model + ColabFold model UniProt A0A0H3GSX3
Length 624
Pocket druggability 0.501
Direct ligand evidence 0 84 total records
Functional annotation 0 EC 6 GO
Target summary

Promising target candidate with multiple supporting evidence streams.

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 (%)
65.789 Lower values reduce human off-target concern.
Human E-value
2.16e-10
Gut microbiome similarity
4.8% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Localization

Localization
Cytoplasmic

Structure confidence

ColabFold pLDDT
89.25 0-100 confidence; >70 supports local structural interpretation.

Binding-site evidence

AlphaFold DB / UniProt model

The selected pocket score is the FPocket value used for ranking after applying the curated structure priority. It estimates small-molecule pocket quality; it is not experimental binding evidence. The 3D viewer may show a different loaded structure, so visible pockets can differ.

FPocket 0.501
Structure A0A0H3GSX3
Pocket Pocket 27
P2Rank 0.867
Structure A0A0H3GSX3
Pocket Pocket 1
ColabFold model
FPocket 0.467 · Pocket 3
P2Rank 0.888 · Pocket 1
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 227 / 4744 genomes with a hit
Prevalence 4.8%

Cross-references

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

Sequence

Primary amino-acid sequence viewer.

MKGQETRGFQSEVKQLLHLMIHSLYSNKEIFLRELISNASDAADKLRFRALSQPDLYEGDGELRVRVSFDKDNRTLTIADNGIGMNREEVIDHLGTIAKSGTKAFLESMGSDQAKDSQLIGQFGVGFYSAFIVADKVTVRTRAAGDKPENGVFWESAGEGEYTVADITKADRGTEITLHLREGEDDFLNDWRVRSIISKYSDHIALPVEIEKREEKDGETVISWEKINKAQALWTRSKSEVNDDEYKEFYKHIAHDYSDPLTWSHNRVEGKQEYTSLLYIPSQAPWDMWNRDHKHGLKLYVQRVFIMDDAEQFMPNYLRFVRGLIDSNDLPLNVSREILQDSSVTRNLRTALTKRALQMLDKLAKDDAEKYQTFWKQFGLVLKEGPAEDPSNQEAIAKLLRFATTHTDSSAQTVSLEEYVSRMKEGQEKIYYITADSYAAAKSSPHLELLRKKGIEVLLLSDRIDEWMMSYLTEFDGKAFQSVAKADESLDKLADEVDESTKEAEKALEPFVERVKNLLGDRVKEVRLTHRLTDTPAIVTTDADEMSTQMAKLFAAAGQAAPEVKYIFELNPAHQLVKRAADTQDDAQFGEWVELLLDQALLAERGTLEDPNQFIRRMNQLLAS

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

6 GO

Gene Ontology (GO)

6
  • GO:0005524 Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
  • GO:0006457 The process of assisting in the covalent and noncovalent assembly of single chain polypeptides or multisubunit complexes into the correct tertiary structure.
  • GO:0140662 Binding to a protein or a protein-containing complex to assist the protein folding process, driven by ATP hydrolysis.
  • GO:0016887 Catalysis of the reaction: ATP + H2O = ADP + H+ phosphate. ATP hydrolysis is used in some reactions as an energy source, for example to catalyze a reaction or drive transport against a concentration gradient.
  • GO:0051082 Binding to an unfolded protein.
  • GO:0005737 The contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

47 records
Show feature table
Start End DB Term Name
27 184 SMART SM00387 HKATPase_4
27 184 InterPro IPR003594 Histidine kinase/HSP90-like ATPase
229 396 FunFam G3DSA:3.30.230.80:FF:000002 Molecular chaperone HtpG
1 220 FunFam G3DSA:3.30.565.10:FF:000009 Molecular chaperone HtpG
1 624 PIRSF PIRSF002583 HSP90_HTPG
1 624 InterPro IPR001404 Heat shock protein Hsp90 family
25 34 ProSitePatterns PS00298 Heat shock hsp90 proteins family signature.
25 34 InterPro IPR019805 Heat shock protein Hsp90, conserved site
510 622 SUPERFAMILY SSF110942 HSP90 C-terminal domain
510 622 InterPro IPR037196 HSP90, C-terminal domain
14 204 CDD cd16927 HATPase_Hsp90-like
14 204 InterPro IPR020575 Heat shock protein Hsp90, N-terminal
93 110 PRINTS PR00775 90kDa heat shock protein signature
93 110 InterPro IPR020575 Heat shock protein Hsp90, N-terminal
120 142 PRINTS PR00775 90kDa heat shock protein signature
120 142 InterPro IPR020575 Heat shock protein Hsp90, N-terminal
26 48 PRINTS PR00775 90kDa heat shock protein signature
26 48 InterPro IPR020575 Heat shock protein Hsp90, N-terminal
190 208 PRINTS PR00775 90kDa heat shock protein signature
190 208 InterPro IPR020575 Heat shock protein Hsp90, N-terminal
172 189 PRINTS PR00775 90kDa heat shock protein signature
172 189 InterPro IPR020575 Heat shock protein Hsp90, N-terminal
75 92 PRINTS PR00775 90kDa heat shock protein signature
75 92 InterPro IPR020575 Heat shock protein Hsp90, N-terminal
5 25 PRINTS PR00775 90kDa heat shock protein signature
5 25 InterPro IPR020575 Heat shock protein Hsp90, N-terminal
483 503 Coils Coil Coil
211 623 Pfam PF00183 Hsp90 protein
211 623 InterPro IPR001404 Heat shock protein Hsp90 family
491 623 Gene3D G3DSA:1.20.120.790 -
491 623 InterPro IPR037196 HSP90, C-terminal domain
1 215 Gene3D G3DSA:3.30.565.10 -
1 215 InterPro IPR036890 Histidine kinase/HSP90-like ATPase superfamily
229 396 Gene3D G3DSA:3.30.230.80 -
4 213 SUPERFAMILY SSF55874 ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase
4 213 InterPro IPR036890 Histidine kinase/HSP90-like ATPase superfamily
5 622 PANTHER PTHR11528 HEAT SHOCK PROTEIN 90 FAMILY MEMBER
5 622 InterPro IPR001404 Heat shock protein Hsp90 family
27 182 Pfam PF02518 Histidine kinase-, DNA gyrase B-, and HSP90-like ATPase
27 182 InterPro IPR003594 Histidine kinase/HSP90-like ATPase
397 489 FunFam G3DSA:3.40.50.11260:FF:000002 Molecular chaperone HtpG
397 489 Gene3D G3DSA:3.40.50.11260 -
491 624 FunFam G3DSA:1.20.120.790:FF:000002 Molecular chaperone HtpG
230 485 SUPERFAMILY SSF54211 Ribosomal protein S5 domain 2-like
230 485 InterPro IPR020568 Ribosomal protein S5 domain 2-type fold
2 623 Hamap MF_00505 Chaperone protein HtpG [htpG].
2 623 InterPro IPR001404 Heat shock protein Hsp90 family

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 · FPocket

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

Site 1 FPocket #27
0.501
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Surrounding area
Site 2 FPocket #39
0.305
Likely same site as P2Rank 1 4.4 Å 20 shared residues 87% of smaller site
Unusual size
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Surrounding area
Site 3 FPocket #60
0.253
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Surrounding area

Binding pockets · P2Rank

Probability: high ≥ 0.5 · medium 0.2–0.49 · low < 0.2

Site 1 P2Rank #1
0.867
Likely same site as FPocket 39 4.4 Å 20 shared residues 87% of smaller site
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Surrounding area
Site 2 P2Rank #2
0.697
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Surrounding area
Site 3 P2Rank #3
0.479
Show in viewer
Surrounding area
Site 4 P2Rank #4
0.279
Show in viewer
Surrounding area
Site 5 P2Rank #5
0.067
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Surrounding area
Residue sets
UniProt: Binding site:100-101
UniProt: Binding site:122-127
UniProt: Binding site:174-174
UniProt: Binding site:336-336
UniProt: Binding site:34-34
UniProt: Binding site:38-38
UniProt: Binding site:80-80
UniProt: Binding site:85-85
UniProt: Binding site:99-99
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_A0A0H3GSX3
AlphaFold DB full sequence Viewing
ColabFold VK055_2094
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.

84 records
Chemistry signal

Structural and bioactivity evidence are both available for this target.

Direct evidence 0 same-protein records
Transferred evidence 34 records from similar proteins
Structural ligands 28 0 loaded crystals
Measured bioactivity 6 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
13C PDB via homolog 337.8 Da · LogP 3.11 · TPSA 86.6 Open detail RCSB PDB
13I PDB via homolog Detail RCSB PDB
13N PDB via homolog Detail RCSB PDB
2GJ PDB via homolog Detail RCSB PDB
4QS 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
13C RCSB PDB P02829 337.8 Da LogP 3.11 TPSA 86.6 ✓ Ro5 ✓ Clean c1c(c2c(c(c1O)Cl)CC(=O)CCCCC=CCCNC2=O)O
13I RCSB PDB P02829 411.9 Da LogP 2.69 TPSA 116.1 ✓ Ro5 ✓ Clean CCO[C@H]([C@H]1CCC\C=C\CCNC(=O)c2c(cc(c(c2CC1=O…
13N RCSB PDB P02829 471.0 Da LogP 3.66 TPSA 115.7 ✓ Ro5 ✓ Clean c1ccc(cc1)CNC(=O)[C@@H]2CCC\C=C\CCNC(=O)c3c(cc(…
2GJ RCSB PDB J9VVA4 465.6 Da LogP 4.13 TPSA 108.1 ✓ Ro5 ✓ Clean CCNC(=O)c1c(c(on1)c2cc(c(cc2O)O)C(C)C)c3ccc(cc3…
4QS RCSB PDB P02829 574.7 Da LogP 2.80 TPSA 163.5 1 viol. Alert C[C@H]1C[C@@H]([C@@H]([C@@H](C=C([C@H]([C@H](/C…
59C RCSB PDB P02829 599.7 Da LogP 2.93 TPSA 166.3 1 viol. Alert C[C@H]1C[C@@H]([C@@H]([C@@H](C=C([C@H]([C@H](/C…
62U RCSB PDB P02829 626.7 Da LogP 3.53 TPSA 176.6 1 viol. Alert C[C@H]1C[C@@H]([C@@H](C(C=C([C@H]([C@H](C=CC=C(…
7FK RCSB PDB P02829 379.9 Da LogP 4.24 TPSA 77.8 ✓ Ro5 ✓ Clean CN1CC/C=C/CCCCCCC(=O)Cc2c(c(cc(c2Cl)O)O)C1=O
814 RCSB PDB P02829 636.7 Da LogP 3.94 TPSA 163.5 1 viol. Alert C[C@H]1C[C@@H]([C@@H]([C@@H](C=C(C([C@H](/C=C\C…
8TO RCSB PDB P02829 630.8 Da LogP 2.30 TPSA 169.5 1 viol. Alert C[C@H]1C[C@@H]([C@@H]([C@@H](C=C([C@H]([C@H](C=…
ACP RCSB PDB P54651 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)…
AGS RCSB PDB P15108 523.2 Da LogP -1.51 TPSA 262.1 3 viol. ✓ Clean c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)…
ANP RCSB PDB P15108 506.2 Da LogP -2.06 TPSA 281.9 3 viol. ✓ Clean c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)…
BC6 RCSB PDB P02829 502.7 Da LogP 4.70 TPSA 131.1 1 viol. ✓ Clean C[C@H]1CC\C=C(\C(=O)Nc2cc(cc(c2)O)C[C@H](C[C@@H…
BO5 RCSB PDB P02829 365.9 Da LogP 3.85 TPSA 77.8 ✓ Ro5 ✓ Clean CN1CC/C=C/CCCCCC(=O)Cc2c(c(cc(c2Cl)O)O)C1=O
D1S RCSB PDB Q4Q4I6 630.8 Da LogP 2.30 TPSA 169.5 1 viol. Alert C[C@H]1C[C@@H]([C@@H]([C@H](/C=C(/[C@@H]([C@H](…
D1U RCSB PDB Q4Q4I6 440.5 Da LogP 3.92 TPSA 90.0 ✓ Ro5 ✓ Clean CC1(Cc2c(c(nn2c3ccc(c(c3)NCCSC)C(=O)N)C(F)(F)F)…
GDM RCSB PDB P54651 560.6 Da LogP 2.41 TPSA 163.5 1 viol. Alert C[C@H]1C[C@@H]([C@@H]([C@H](\C=C(\[C@@H]([C@H](…
H64 RCSB PDB P02829 465.4 Da LogP 3.44 TPSA 100.1 ✓ Ro5 ✓ Clean CC(C)NCCCn1c2c(c(ncn2)N)nc1Sc3cc4c(cc3Br)OCO4
KX2 RCSB PDB Q4Q4I6 642.8 Da LogP 2.45 TPSA 169.5 1 viol. Alert C[C@H]1C[C@@H]([C@@H]([C@H](/C=C(/[C@@H]([C@H](…
L4V RCSB PDB P02829 351.8 Da LogP 3.46 TPSA 77.8 ✓ Ro5 ✓ Clean CN1CCC/C=C\CCCC(=O)Cc2c(c(cc(c2Cl)O)O)C1=O
RDA RCSB PDB P02829 411.8 Da LogP 2.53 TPSA 145.6 ✓ Ro5 ✓ Clean COc1cc(c(cc1O)NC(=O)CCc2c(c(cc(c2Cl)O)O)C(=O)OC…
RDE RCSB PDB P02829 397.8 Da LogP 2.76 TPSA 120.5 ✓ Ro5 ✓ Clean COc1cc(c(c(c1OC)CCOC(=O)c2cc(c(cc2O)O)Cl)OC)N
TAM RCSB PDB P54651 163.2 Da LogP -1.17 TPSA 86.7 ✓ Ro5 ✓ Clean C(CO)C(CCO)(CCO)N
W8S RCSB PDB J9VVA4 456.5 Da LogP 4.41 TPSA 99.9 ✓ Ro5 ✓ Clean Cn1c(cc(n1)c2cccc(c2)OC)Nc3cc(cc(c3C(=O)N4Cc5cc…
W8V RCSB PDB J9VVA4 440.5 Da LogP 4.71 TPSA 90.6 ✓ Ro5 ✓ Clean Cc1ccccc1c2cc(n(n2)C)Nc3cc(cc(c3C(=O)N4Cc5ccccc…
W8Y RCSB PDB J9VVA4 427.5 Da LogP 3.79 TPSA 103.5 ✓ Ro5 ✓ Clean Cn1c(cc(n1)c2ccccc2)Nc3cc(cc(c3C(=O)N4Cc5cccnc5…
XD6 RCSB PDB P02829 366.8 Da LogP 3.11 TPSA 100.9 ✓ Ro5 ✓ Clean c1c(c2c(c(c1O)Cl)CC(=O)CCCC/C(=C/CCOC2=O)/C=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.