KpKP13 Protein target profile

Putative tartrate transporter

Accession: KP13_05199

Gene: AHE44603.1 3D evidence: AlphaFold DB model + ColabFold model UniProt A0A086IJI7
Length 445
Pocket druggability (P2Rank · AlphaFold DB model) 0.952
Direct ligand evidence 0 51 total records
Functional annotation 0 EC 3 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
No hit
Gut microbiome similarity
0.2% 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
89.97 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) 0.952
Structure A0A086IJI7
Pocket Pocket 1
Druggability (FPocket) 0.371
Structure A0A086IJI7
Pocket Pocket 28
ColabFold model
P2Rank 0.93 · Pocket 1
FPocket 0.47 · Pocket 25
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 9 / 4744 genomes with a hit
Prevalence 0.2%

Sequence

Primary amino-acid sequence viewer.

MSAINEKAVNGTQLQRTHKKIYRHLMPLLIVAYIISFIDRTNIGMAKATMSVDIGLSATAFGLGAGLFFLTYAVLEIPSNLFLTRIGARRWIARIMITWGILSCGMAFVTGPTSFYVMRLLLGAAEAGLYPGIIYYLTLWFGREERAKATGLFLLGVCLANIIGAPLGGLLLSLDGMSGWHGWQWMFFIEGLPAIALAFVVWRRLPDKPADARWLDSDDVQAINAVLAKEAEETRHTPSRFSLKNALSTRVFLLLVLIYFTHQFSVYGLSYFLPGIIGSWGQLTPLQVGLLTAIPWIAAAAGGILLPRFARTEQRSRSMLMAGYLVMATGMAIGAIAGHGVALLGFSLAAFMFFAMQSIIFNWLPSIMSGHMLAGSFGLLNCLGLCGGFLGPFILGAFEDRTGAATSGLWFAVALLIIGALVSLFLKSSSSPGSVSAKQAHGEKV

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

3 GO

Subcellular localization

Localization
CytoplasmicMembrane

Gene Ontology (GO)

3
  • GO:0022857 Enables the transfer of a substance, usually a specific substance or a group of related substances, from one side of a membrane to the other.
  • GO:0055085 The process in which a solute is transported across a lipid bilayer, from one side of a membrane to the other.
  • GO:0005886 The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

50 records
Show feature table
Start End DB Term Name
21 38 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
16 427 SUPERFAMILY SSF103473 MFS general substrate transporter
16 427 InterPro IPR036259 MFS transporter superfamily
396 406 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
427 445 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
80 90 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
149 171 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
181 203 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
285 306 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
274 284 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
404 426 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
14 221 Gene3D G3DSA:1.20.1250.20 MFS general substrate transporter like domains
14 221 InterPro IPR036259 MFS transporter superfamily
15 425 PANTHER PTHR43791 PERMEASE-RELATED
407 426 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
172 182 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
288 307 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
251 273 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
91 110 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
203 250 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
245 434 Gene3D G3DSA:1.20.1250.20 MFS general substrate transporter like domains
245 434 InterPro IPR036259 MFS transporter superfamily
183 202 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
338 342 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
21 38 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
138 148 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
149 171 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
365 375 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
25 431 ProSiteProfiles PS50850 Major facilitator superfamily (MFS) profile.
25 431 InterPro IPR020846 Major facilitator superfamily domain
15 220 FunFam G3DSA:1.20.1250.20:FF:000018 MFS transporter permease
111 115 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
91 110 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
39 57 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
376 395 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
320 337 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
25 426 CDD cd17319 MFS_ExuT_GudP_like
307 317 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
58 79 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
1 20 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
120 142 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
377 399 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
29 392 Pfam PF07690 Major Facilitator Superfamily
29 392 InterPro IPR011701 Major facilitator superfamily
318 337 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
343 364 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
342 364 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
116 137 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
48 70 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
251 273 TMHMM TMhelix 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
0.952
Likely same site as FPocket 28 1.2 Å 31 shared residues 89% of smaller site
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Surrounding area
Pocket 2 P2Rank #2
0.104
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Surrounding area
Pocket 3 P2Rank #3
0.1
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Surrounding area
Pocket 4 P2Rank #4
0.075
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Surrounding area
Pocket 5 P2Rank #5
0.037
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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 #28
0.371 Unusual size
Likely same site as P2Rank 1 1.2 Å 31 shared residues 89% 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_A0A086IJI7
AlphaFold DB full sequence Viewing
ColabFold KP13_05199
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.

51 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 1 records from similar proteins
Structural ligands 1 0 loaded crystals
Measured bioactivity 0 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
J0M PDB via homolog 196.2 Da · LogP -3.49 · TPSA 138.5 Open detail RCSB PDB
ZINC11592819 ZINC proposed compound · Tanimoto 0.950 Detail ZINC
ZINC11592820 ZINC proposed compound · Tanimoto 0.950 Detail ZINC
ZINC11592821 ZINC proposed compound · Tanimoto 0.950 Detail ZINC
ZINC1531006 ZINC proposed compound · Tanimoto 0.950 Detail ZINC

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
J0M RCSB PDB J7QAK3 196.2 Da LogP -3.49 TPSA 138.5 1 viol. ✓ Clean C([C@H]([C@@H]([C@@H]([C@H](C(=O)O)O)O)O)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.

Cross-references

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