KpATCC43816 Protein target profile

gamma-glutamyltransferase

Accession: VK055_3663

Gene: AIK82218.1 ggt 3D evidence: AlphaFold DB model + ColabFold model Metabolism 13 reactions UniProt A0A0H3GWX6
Length 580
Pocket druggability (P2Rank · AlphaFold DB model) 0.711
Metabolic reactions 13
Chokepoint No
Direct ligand evidence 0 58 total records
Functional annotation 2 EC 4 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 (%)
40.876 Lower values reduce human off-target concern.
Human E-value
2.38e-24
Gut microbiome similarity
2.2% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Structure confidence

ColabFold pLDDT
91.1 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) 0.711
Structure A0A0H3GWX6
Pocket Pocket 1
Druggability (FPocket) 0.442
Structure A0A0H3GWX6
Pocket Pocket 6
ColabFold model
P2Rank 0.66 · Pocket 1
FPocket 0.209 · Pocket 10
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 104 / 4744 genomes with a hit
Prevalence 2.2%

Metabolic context

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

Explore metabolic network
Relative network centrality 0.0% more central than 0.0% of genes in this genome
Chokepoint Not a chokepoint
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 reactions

13 reactions 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.

MIKTTIWRQVVIAALLAGGSFTVAANPPPPPVSYGVEEDVFHPVRARQGMVASVDALATRVGVDILRQGGNAVDAAVAVGYALAVTHPQAGNIGGGGFMMLRTKDGKTTAIDFREMAPEQATRDMFLDDQGNPDSKKSLTSHLASGTPGSVAGFSLALEKYGTMPLNKVIRPAIKLAEEGFIVNDALADDLKTYGSEVIPQHENSKAIFWKNGEPLKKGDRLVQKNLGKSLELIAEHGPDAFYKGAIADQIADEMKKHGGLITKADLAGYKAVERTPVSGEYRGYEVYSMPPPSSGGIHIVQILNILENFDMQKYGFGSADAMQVMAEAEKHAYADRSEYLGDPDFVNVPWQALTSKAYAKAIAAEIDVNKAKPSSQIRPGKLAPYESNQTTHFSVVDKDGNAVAVTYTLNTTFGTGIVAGDSGILLNNQMDDFSAKPGVPNVYGLVGGEANAVEPKKRPLSSMSPTIVVKDGKTWLVTGSPGGSRIITTVLQMVVNTIDFGMNVAEATNAPRFHHQWLPDELRVEKGFSPDTLKLLEAKGQKVALKEAMGSTQSIMVGPDGMLYGASDPRSPDDLTAGY

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

2 EC 4 GO

Subcellular localization

Localization
Periplasmic

Enzyme Commission (EC)

2

Gene Ontology (GO)

4
  • GO:0006751 The chemical reactions and pathways resulting in the breakdown of glutathione, the tripeptide glutamylcysteinylglycine, which acts as a coenzyme for some enzymes and as an antioxidant in the protection of sulfhydryl groups in enzymes and other proteins.
  • GO:0036374 Catalysis of the reaction: glutathione + H2O = L-cysteinylglycine + L-glutamate.
  • GO:0103068 OBSOLETE. Catalysis of the reaction: leukotriene C4 + a standard alpha amino acid = leukotriene D4 + an (gamma-L-glutamyl)-L-amino acid.
  • GO:0006750 The chemical reactions and pathways resulting in the formation of glutathione, the tripeptide glutamylcysteinylglycine, which acts as a coenzyme for some enzymes and as an antioxidant in the protection of sulfhydryl groups in enzymes and other proteins.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

30 records
Show feature table
Start End DB Term Name
64 572 Pfam PF01019 Gamma-glutamyltranspeptidase
277 390 Gene3D G3DSA:1.10.246.130 -
277 390 InterPro IPR043138 Gamma-glutamyltranspeptidase, large subunit, C-terminal domain
22 25 Phobius SIGNAL_PEPTIDE_C_REGION C-terminal region of a signal peptide.
1 25 Phobius SIGNAL_PEPTIDE Signal peptide region
42 572 PANTHER PTHR43199 GLUTATHIONE HYDROLASE
1 9 Phobius SIGNAL_PEPTIDE_N_REGION N-terminal region of a signal peptide.
391 580 Gene3D G3DSA:3.60.20.40 -
391 580 InterPro IPR043137 Gamma-glutamyltranspeptidase, small subunit
26 580 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
277 390 FunFam G3DSA:1.10.246.130:FF:000004 Gamma-glutamyltranspeptidase (Ggt)
1 25 SignalP_GRAM_NEGATIVE SignalP-noTM SignalP-noTM
49 571 NCBIfam TIGR00066 gamma-glutamyltransferase
49 571 InterPro IPR000101 Gamma-glutamyltranspeptidase
41 573 SUPERFAMILY SSF56235 N-terminal nucleophile aminohydrolases (Ntn hydrolases)
41 573 InterPro IPR029055 Nucleophile aminohydrolases, N-terminal
1 25 SignalP_GRAM_POSITIVE SignalP-TM SignalP-TM
391 415 ProSitePatterns PS00462 Gamma-glutamyltranspeptidase signature.
391 415 InterPro IPR000101 Gamma-glutamyltranspeptidase
10 21 Phobius SIGNAL_PEPTIDE_H_REGION Hydrophobic region of a signal peptide.
291 310 PRINTS PR01210 Gamma-glutamyltranspeptidase signature
480 497 PRINTS PR01210 Gamma-glutamyltranspeptidase signature
162 181 PRINTS PR01210 Gamma-glutamyltranspeptidase signature
391 409 PRINTS PR01210 Gamma-glutamyltranspeptidase signature
71 96 PRINTS PR01210 Gamma-glutamyltranspeptidase signature
261 277 PRINTS PR01210 Gamma-glutamyltranspeptidase signature
415 433 PRINTS PR01210 Gamma-glutamyltranspeptidase signature
456 471 PRINTS PR01210 Gamma-glutamyltranspeptidase signature
144 162 PRINTS PR01210 Gamma-glutamyltranspeptidase signature
391 580 FunFam G3DSA:3.60.20.40:FF:000003 Gamma-glutamyltranspeptidase

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
0.711
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Surrounding area
Pocket 2 P2Rank #2
0.185
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Surrounding area
Pocket 3 P2Rank #3
0.184
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Surrounding area
Pocket 4 P2Rank #4
0.069
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Surrounding area
Pocket 5 P2Rank #5
0.043
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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 #6
0.442
Show in viewer
Surrounding area
Residue sets
UniProt: Active site:392-392 Nucleophile
UniProt: Binding site:115-115
UniProt: Binding site:410-412
UniProt: Binding site:434-434
UniProt: Binding site:463-464
UniProt: Binding site:485-485
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_A0A0H3GWX6
AlphaFold DB full sequence Viewing
ColabFold VK055_3663
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.

58 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 8 records from similar proteins
Structural ligands 8 0 loaded crystals
Measured bioactivity 0 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
4UD PDB via homolog 144.1 Da · LogP -0.83 · TPSA 84.9 Open detail RCSB PDB
6FY PDB via homolog Detail RCSB PDB
AVN PDB via homolog Detail RCSB PDB
AZS PDB via homolog Detail RCSB PDB
DON 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
4UD RCSB PDB O25743 144.1 Da LogP -0.83 TPSA 84.9 ✓ Ro5 ✓ Clean C1C=NO[C@@H]1[C@@H](C(=O)O)N
6FY RCSB PDB P18956 310.2 Da LogP -0.74 TPSA 156.0 ✓ Ro5 ✓ Clean CC[C@H](C(=O)NCC(=O)O)O[P@H](=O)CC[C@@H](C(=O)O…
AVN RCSB PDB O25743 178.6 Da LogP -0.26 TPSA 84.9 ✓ Ro5 ✓ Clean C1[C@H](ON=C1Cl)[C@@H](C(=O)O)N
AZS RCSB PDB P18956 173.1 Da LogP -1.76 TPSA 126.0 ✓ Ro5 Alert C([C@@H](C(=O)O)N)OC(=O)C=[N+]=[N-]
DON RCSB PDB Q65KZ6 173.2 Da LogP -0.22 TPSA 116.6 ✓ Ro5 Alert C(CC(=O)CN=N)[C@@H](C(=O)O)N
GBL RCSB PDB A0A6G6IRK3 86.1 Da LogP 0.32 TPSA 26.3 ✓ Ro5 ✓ Clean C1CC(=O)OC1
GGL RCSB PDB P18956 147.1 Da LogP -0.74 TPSA 100.6 ✓ Ro5 ✓ Clean C(CC(=O)O)[C@@H](C(=O)O)N
GTB RCSB PDB O25743 442.5 Da LogP -0.29 TPSA 202.0 ✓ Ro5 ✓ Clean c1cc(ccc1CSC[C@@H](C(=O)NCC(=O)O)NC(=O)CC[C@@H]…

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.