KpKP13 Protein target profile

putative symporter

Accession: KP13_05382

Gene: AHE45027.1 3D evidence: AlphaFold DB model + ColabFold model UniProt A0A0H3GRZ8
Length 453
Pocket druggability (P2Rank · AlphaFold DB model) 0.797
Direct ligand evidence 0 86 total records
Functional annotation 0 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 (%)
31.206 Lower values reduce human off-target concern.
Human E-value
1.77e-07
Gut microbiome similarity
4.0% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

Essential (DEG)
N
DEG identity (%)
0.0 Higher values support similarity to known essential genes.

Structure confidence

ColabFold pLDDT
86.84 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) 0.797
Structure A0A0H3GRZ8
Pocket Pocket 1
Druggability (FPocket) 0.974
Structure A0A0H3GRZ8
Pocket Pocket 4
ColabFold model
P2Rank 0.594 · Pocket 1
FPocket 0.64 · Pocket 11
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 188 / 4744 genomes with a hit
Prevalence 4.0%

Sequence

Primary amino-acid sequence viewer.

MFAVLLFALGQTRHKQWSLARKVLVGLATGVVFGLALQLIYGSDSQVLKDSIQWFNIVGNGYVQLLQMIVMPLVFASILSAVARLHNASQLGKISFLSIGTLLFTTLIAALVGVLVTNMFGLTAEGLVQGSAETARLNAIQSNYVGKVADLSVPQLILSFVPKNPFADLTGANPTSIISIVIFSAFLGVAALKLLKEDVEKGQRVLTAIDTLQGWVMKLVRLVMQLTPYGVLALMTKVVAGSNLQDIIKLGGFVVASYIALGIMFVVHGLLLAINGVSPLKYFRKVWPVITFAFTSRSSAASIPLNVEAQTRRLGVPESIASFSASFGATIGQNGCAGIYPAMLAVMVAPTVGINPLDPMWIATLVGIVTVSSAGVAGVGGGATFAALIVLPAMGLPVTLVALLISVEPLIDMGRTALNVNGSMTAGTLTSQWLRQTDKSIFDSEEEAELAHR

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

4 GO

Subcellular localization

Localization
CytoplasmicMembrane

Gene Ontology (GO)

4
  • 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:0016020 A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it.
  • 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:0015184 Enables the transfer of L-cystine from one side of a membrane to the other.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

45 records
Show feature table
Start End DB Term Name
170 192 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
359 381 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
61 83 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
250 272 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
406 453 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
117 175 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
22 452 FunFam G3DSA:1.10.3860.10:FF:000004 L-cystine transporter tcyP
306 324 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
325 348 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
385 405 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
61 82 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
95 117 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
330 352 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
349 359 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
42 60 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
1 22 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
23 41 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
236 246 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
360 379 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
19 433 SUPERFAMILY SSF118215 Proton glutamate symport protein
19 433 InterPro IPR036458 Sodium:dicarboxylate symporter superfamily
22 452 Gene3D G3DSA:1.10.3860.10 Sodium:dicarboxylate symporter
22 452 InterPro IPR036458 Sodium:dicarboxylate symporter superfamily
275 285 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
380 384 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
215 235 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
21 433 Pfam PF00375 Sodium:dicarboxylate symporter family
21 433 InterPro IPR001991 Sodium:dicarboxylate symporter
83 93 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
247 274 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
385 407 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
19 41 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
196 214 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
286 305 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
94 116 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
14 446 PANTHER PTHR42865 PROTON/GLUTAMATE-ASPARTATE SYMPORTER
14 446 InterPro IPR001991 Sodium:dicarboxylate symporter
387 407 PRINTS PR00173 Glutamate-aspartate symporter signature
17 37 PRINTS PR00173 Glutamate-aspartate symporter signature
95 120 PRINTS PR00173 Glutamate-aspartate symporter signature
172 194 PRINTS PR00173 Glutamate-aspartate symporter signature
360 379 PRINTS PR00173 Glutamate-aspartate symporter signature
250 269 PRINTS PR00173 Glutamate-aspartate symporter signature
65 85 PRINTS PR00173 Glutamate-aspartate symporter signature
176 195 Phobius TRANSMEMBRANE 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
0.797
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Surrounding area
Pocket 2 P2Rank #2
0.498
Likely same site as FPocket 24 2.2 Å 12 shared residues 100% of smaller site
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Surrounding area
Pocket 3 P2Rank #3
0.113
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Surrounding area
Pocket 4 P2Rank #4
0.059
Likely same site as FPocket 4 4.5 Å 8 shared residues 100% of smaller site
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Surrounding area
Pocket 5 P2Rank #5
0.046
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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 #4
0.974
Likely same site as P2Rank 4 4.5 Å 8 shared residues 100% of smaller site
Show in viewer
Surrounding area
Pocket 2 FPocket #24
0.734
Likely same site as P2Rank 2 2.2 Å 12 shared residues 100% of smaller site
Show in viewer
Surrounding area
Pocket 3 FPocket #2
0.287
Show in viewer
Surrounding area
Pocket 4 FPocket #12
0.254
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_A0A0H3GRZ8
AlphaFold DB full sequence Viewing
ColabFold KP13_05382
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 12 0 loaded crystals
Measured bioactivity 24 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
6Z6 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(=…
6Z6 RCSB PDB Q15758 422.5 Da LogP 5.06 TPSA 85.3 1 viol. ✓ Clean COc1ccc(cc1)C2C(=C(OC3=C2C(=O)CC(C3)c4cccc5c4cc…
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 Q5JID0 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
TG2 RCSB PDB Q15758 311.3 Da LogP 2.33 TPSA 75.6 ✓ Ro5 ✓ Clean c1ccc(cc1)c2ccc(cc2)C(=O)OC3CC(NC3)C(=O)O
TJ5 RCSB PDB Q15758 311.3 Da LogP 2.33 TPSA 75.6 ✓ Ro5 ✓ Clean c1ccc(cc1)c2ccc(cc2)C(=O)O[C@H]3C[C@H](NC3)C(=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.