KpATCC43816 Protein target profile

proton/sodium-glutamate symport protein

Accession: VK055_2988

Gene: gltT AIK81573.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism Not in network UniProt A0A0H3GHQ1
Length 437
Pocket druggability (P2Rank · AlphaFold DB model) 0.653
Direct ligand evidence 0 66 total records
Functional annotation 0 EC 5 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 (%)
44.231 Lower values reduce human off-target concern.
Human E-value
5.54e-08
Gut microbiome similarity
4.1% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Structure confidence

ColabFold pLDDT
88.1 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) 0.653
Structure A0A0H3GHQ1
Pocket Pocket 1
Druggability (FPocket) 0.88
Structure A0A0H3GHQ1
Pocket Pocket 13
ColabFold model
P2Rank 0.553 · Pocket 1
FPocket 0.911 · Pocket 2
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 196 / 4744 genomes with a hit
Prevalence 4.1%

Metabolic context

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

This protein is not associated with the imported metabolic network for this genome.

Browse the genome's metabolic network

Imported from KpATCC43816.sbml · 2026-07-09

Sequence

Primary amino-acid sequence viewer.

MKKTKKVSLAWQILLALVLGILLGSYLHYHAESRDWLISNLLTPAGDIFIHLIKMIVVPIVISTLVVGIAGVGDAKQLGRIGAKTIIYFEVITTVAIVLGITLANVFQPGTGIDMSQLAAVDISKYQNTTAEVQSHAHGLMGTILSLVPTNIVASMAKGDMLPIIFFSVLFGLGLSSLPATHREPLVTVFRSISETMFKVTHMVMRYAPVGVFALISVTVATFGFASLWPLAKLVLLVYFAILFFALVVLGIVARLCGLSIWILIRILKDELILAYSTASSESVLPRIIEKMEAYGAPASITSFVVPTGYSFNLDGSTLYQSIAAIFIAQLYGIDLSIWQEITLVLTLMVTSKGIAGVPGVSFVVLLATLGSVGIPLEGLAFIAGVDRILDMARTALNVVGNALAVLVIAKWEHKFDRKKALAYEREVLGKFDKTAQ

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

5 GO

Subcellular localization

Localization
CytoplasmicMembrane

Gene Ontology (GO)

5
  • GO:0016020 A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it.
  • GO:0015293 Enables the active transport of a solute across a membrane by a mechanism whereby two or more species are transported together in the same direction in a tightly coupled process not directly linked to a form of energy other than chemiosmotic energy.
  • GO:0006835 The directed movement of dicarboxylic acids into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
  • GO:0005886 The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
  • GO:0005280 Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: amino acid(out) + H+(out) = amino acid(in) + H+(in).

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

54 records
Show feature table
Start End DB Term Name
48 73 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
294 312 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
20 24 Phobius SIGNAL_PEPTIDE_C_REGION C-terminal region of a signal peptide.
313 317 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
266 293 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
411 437 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
340 359 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
74 84 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
387 391 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
161 180 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
156 178 PRINTS PR00173 Glutamate-aspartate symporter signature
82 107 PRINTS PR00173 Glutamate-aspartate symporter signature
7 27 PRINTS PR00173 Glutamate-aspartate symporter signature
339 358 PRINTS PR00173 Glutamate-aspartate symporter signature
204 223 PRINTS PR00173 Glutamate-aspartate symporter signature
304 330 PRINTS PR00173 Glutamate-aspartate symporter signature
366 386 PRINTS PR00173 Glutamate-aspartate symporter signature
52 72 PRINTS PR00173 Glutamate-aspartate symporter signature
207 229 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
392 410 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
182 206 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
237 265 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
9 412 Pfam PF00375 Sodium:dicarboxylate symporter family
9 412 InterPro IPR001991 Sodium:dicarboxylate symporter
7 29 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
234 256 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
232 236 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
161 181 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
307 330 ProSitePatterns PS00714 Sodium:dicarboxylate symporter family signature 2.
307 330 InterPro IPR018107 Sodium:dicarboxylate symporter, conserved site
207 231 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
44 59 ProSitePatterns PS00713 Sodium:dicarboxylate symporter family signature 1.
44 59 InterPro IPR018107 Sodium:dicarboxylate symporter, conserved site
7 19 Phobius SIGNAL_PEPTIDE_H_REGION Hydrophobic region of a signal peptide.
25 47 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
318 339 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
392 410 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
85 107 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
355 377 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
1 6 Phobius SIGNAL_PEPTIDE_N_REGION N-terminal region of a signal peptide.
1 24 Phobius SIGNAL_PEPTIDE Signal peptide region
1 418 Gene3D G3DSA:1.10.3860.10 Sodium:dicarboxylate symporter
1 418 InterPro IPR036458 Sodium:dicarboxylate symporter superfamily
108 160 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
86 108 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
4 423 PANTHER PTHR42865 PROTON/GLUTAMATE-ASPARTATE SYMPORTER
4 423 InterPro IPR001991 Sodium:dicarboxylate symporter
2 430 Hamap MF_02063 Proton/glutamate-aspartate symporter [gltP].
2 430 InterPro IPR034703 Proton/glutamate-aspartate symporter GltP
360 386 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
1 419 FunFam G3DSA:1.10.3860.10:FF:000001 C4-dicarboxylate transport protein
51 73 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
9 413 SUPERFAMILY SSF118215 Proton glutamate symport protein
9 413 InterPro IPR036458 Sodium:dicarboxylate symporter superfamily

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
0.653
Likely same site as FPocket 27 2.1 Å 9 shared residues 100% of smaller site
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Surrounding area
Pocket 2 P2Rank #2
0.362
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Surrounding area
Pocket 3 P2Rank #3
0.352
Likely same site as FPocket 13 3.4 Å 11 shared residues 85% of smaller site
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Surrounding area
Pocket 4 P2Rank #4
0.305
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Surrounding area
Pocket 5 P2Rank #5
0.271
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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 #13
0.88
Likely same site as P2Rank 3 3.4 Å 11 shared residues 85% of smaller site
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Surrounding area
Pocket 2 FPocket #14
0.623
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Surrounding area
Pocket 3 FPocket #32
0.617
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Surrounding area
Pocket 4 FPocket #27
0.582
Likely same site as P2Rank 1 2.1 Å 9 shared residues 100% of smaller site
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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_A0A0H3GHQ1
AlphaFold DB full sequence Viewing
ColabFold VK055_2988
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.

66 records
Chemistry signal

Structural and bioactivity evidence are both available for this target.

Direct evidence 0 same-protein records
Transferred evidence 16 records from similar proteins
Structural ligands 10 0 loaded crystals
Measured bioactivity 6 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
6OU PDB via homolog 718.0 Da · LogP 11.05 · TPSA 134.4 Open detail RCSB PDB
7O9 PDB via homolog Detail RCSB PDB
BCS PDB via homolog Detail RCSB PDB
DAS PDB via homolog Detail RCSB PDB
DMU 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
6OU RCSB PDB O59010 718.0 Da LogP 11.05 TPSA 134.4 2 viol. ✓ Clean CCCCCCCCCCCCCCCC(=O)OC[C@H](COP(=O)(O)OCCN)OC(=…
7O9 RCSB PDB O59010 426.3 Da LogP 2.34 TPSA 138.9 ✓ Ro5 ✓ Clean c1cc(cc(c1)NC(=O)c2ccc(cc2)C(F)(F)F)CO[C@@H]([C…
BCS RCSB PDB O59010 211.3 Da LogP 1.33 TPSA 63.3 ✓ Ro5 ✓ Clean c1ccc(cc1)CSC[C@@H](C(=O)O)N
DAS RCSB PDB Q5JID0 133.1 Da LogP -1.13 TPSA 100.6 ✓ Ro5 ✓ Clean C([C@H](C(=O)O)N)C(=O)O
DMU RCSB PDB Q5JID0 482.6 Da LogP -1.23 TPSA 178.5 2 viol. ✓ Clean CCCCCCCCCCO[C@H]1[C@@H]([C@H]([C@@H]([C@H](O1)C…
PLM RCSB PDB O59010 256.4 Da LogP 5.55 TPSA 37.3 1 viol. ✓ Clean CCCCCCCCCCCCCCCC(=O)O
QJW RCSB PDB Q5JID0 284.2 Da LogP -0.02 TPSA 153.0 ✓ Ro5 ✓ Clean c1ccc(c(c1)CO[C@@H]([C@@H](C(=O)O)N)C(=O)O)N(=O…
QM5 RCSB PDB Q5JID0 375.4 Da LogP 1.52 TPSA 143.1 ✓ Ro5 ✓ Clean COc1ccc(cc1)NNc2ccc(cc2)CO[C@@H]([C@@H](C(=O)O)…
TB1 RCSB PDB O59010 239.2 Da LogP 0.07 TPSA 109.9 ✓ Ro5 ✓ Clean c1ccc(cc1)CO[C@@H]([C@@H](C(=O)O)N)C(=O)O
TL RCSB PDB O59010 204.4 Da LogP -0.38 TPSA 0.0 ✓ Ro5 ✓ Clean [Tl+]

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.