KpKP13 Protein target profile

Major facilitator superfamily protein

Accession: KP13_05108

Gene: AHE44226.1 3D evidence: AlphaFold DB model + ColabFold model UniProt W8UZ34
Length 510
Pocket druggability (P2Rank · AlphaFold DB model) 0.765
Direct ligand evidence 0 154 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
0.1% 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
89.55 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) 0.765
Structure W8UZ34
Pocket Pocket 1
Druggability (FPocket) 0.886
Structure W8UZ34
Pocket Pocket 1
ColabFold model
P2Rank 0.811 · Pocket 1
FPocket 0.991 · Pocket 29
Core conservation Accessory gene
Roary core
CoreCruncher accessory
Gut microbiome 7 / 4744 genomes with a hit
Prevalence 0.1%

Sequence

Primary amino-acid sequence viewer.

MLLPARTPSRYASALAAFSVFMAALLLPLSFTGGVMTTPAIQQSLGGSPAALSWLTNGFMLTFGSFLLAAGVTADAIDRKRIFIAGAALFCLSSLLFCLTHNLFLSGVLRALQGLAAAMILASGSAALAQLYDGAQRTRAFSILGTVFGAGLAFGPLLIGFMTDAVGWRGVYALFALLSAGVLLIGLVSLPATEKSEPRTPDNLGLTLFTLALMLFTASLMVIPARGFLSLTTLALLIASGGLFVAFVVRCRRVNNPVLELSLLRHPRFVGVLLLPVATCCCYVVLLIIVPLHFMGGEGMSESQSALYLMALTTPMLVFPSVAALLTRWFSPGQVSTAGLMMASVGLLLLGDAFHSNHLPQLVLALILCGAGAALPWGLMDGLAISAVPVAKAGMAAGLFNTVRVAGEGIALAVVSAVLTASNTLTLQSRVHGYAPEVIHRAAGWLGAGNMPQAAALLPDFSLRVLRESYDSAYTLLFSGLAVVTLLCALMIWLTLCRKGGAIQTRNSGS

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:0016020 A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

57 records
Show feature table
Start End DB Term Name
204 223 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
357 361 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
399 421 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
295 305 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
141 159 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
364 386 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
327 337 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
32 50 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
82 104 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
140 162 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
306 328 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
12 31 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
71 81 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
109 128 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
264 500 Gene3D G3DSA:1.20.1250.20 MFS general substrate transporter like domains
264 500 InterPro IPR036259 MFS transporter superfamily
403 421 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
160 170 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
269 294 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
473 496 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
227 249 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
171 192 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
13 35 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
82 105 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
224 228 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
269 291 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
422 472 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
392 402 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
106 110 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
497 510 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
338 356 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
12 500 ProSiteProfiles PS50850 Major facilitator superfamily (MFS) profile.
12 500 InterPro IPR020846 Major facilitator superfamily domain
111 129 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
130 140 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
20 496 CDD cd17321 MFS_MMR_MDR_like
474 496 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
306 326 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
51 70 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
193 203 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
250 268 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
335 354 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
362 391 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
7 497 PANTHER PTHR42718 MAJOR FACILITATOR SUPERFAMILY MULTIDRUG TRANSPORTER MFSC
50 69 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
1 11 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
402 421 PRINTS PR01036 Tetracycline resistance protein TetB signature
140 164 PRINTS PR01036 Tetracycline resistance protein TetB signature
79 101 PRINTS PR01036 Tetracycline resistance protein TetB signature
15 252 Gene3D G3DSA:1.20.1720.10 Multidrug resistance protein D
17 499 SUPERFAMILY SSF103473 MFS general substrate transporter
17 499 InterPro IPR036259 MFS transporter superfamily
204 223 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
172 191 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
229 249 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
20 410 Pfam PF07690 Major Facilitator Superfamily
20 410 InterPro IPR011701 Major facilitator 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
0.765
Likely same site as FPocket 1 2.5 Å 19 shared residues 90% of smaller site
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Surrounding area
Pocket 2 P2Rank #2
0.761
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Surrounding area
Pocket 3 P2Rank #3
0.46
Likely same site as FPocket 25 1.0 Å 13 shared residues 100% of smaller site
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Surrounding area
Pocket 4 P2Rank #4
0.399
Likely same site as FPocket 39 4.9 Å 14 shared residues 78% of smaller site
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Surrounding area
Pocket 5 P2Rank #5
0.227
Likely same site as FPocket 30 1.7 Å 12 shared residues 100% of smaller site
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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 #1
0.886
Likely same site as P2Rank 1 2.5 Å 19 shared residues 90% of smaller site
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Surrounding area
Pocket 2 FPocket #39
0.872
Likely same site as P2Rank 4 4.9 Å 14 shared residues 78% of smaller site
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Surrounding area
Pocket 3 FPocket #30
0.673
Likely same site as P2Rank 5 1.7 Å 12 shared residues 100% of smaller site
Show in viewer
Surrounding area
Pocket 4 FPocket #25
0.572
Likely same site as P2Rank 3 1.0 Å 13 shared residues 100% of smaller site
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_W8UZ34
AlphaFold DB full sequence Viewing
ColabFold KP13_05108
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.

154 records
Chemistry signal

Structural and bioactivity evidence are both available for this target.

Direct evidence 0 same-protein records
Transferred evidence 104 records from similar proteins
Structural ligands 4 0 loaded crystals
Measured bioactivity 100 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
CLM PDB via homolog 323.1 Da · LogP 0.91 · TPSA 112.7 Open detail RCSB PDB
DXC PDB via homolog Detail RCSB PDB
KHJ PDB via homolog Detail RCSB PDB
LDA PDB via homolog Detail RCSB PDB
CHEMBL333888 ChEMBL via homolog · pchembl 6.52 (~302.0 nM) Detail ChEMBL

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
CLM RCSB PDB P0AEY8 323.1 Da LogP 0.91 TPSA 112.7 ✓ Ro5 ✓ Clean c1cc(ccc1[C@H]([C@@H](CO)NC(=O)C(Cl)Cl)O)[N+](=…
DXC RCSB PDB P0AEY8 392.6 Da LogP 4.48 TPSA 77.8 ✓ Ro5 ✓ Clean C[C@H](CCC(=O)O)[C@H]1CC[C@@H]2[C@@]1([C@H](C[C…
KHJ RCSB PDB P0AEY8 186.3 Da LogP 1.00 TPSA 7.8 ✓ Ro5 ✓ Clean C[n+]1ccc(cc1)c2cc[n+](cc2)C
LDA RCSB PDB P0AEY8 229.4 Da LogP 4.48 TPSA 23.1 ✓ Ro5 ✓ Clean CCCCCCCCCCCC[N+](C)(C)[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.

Chemistry

ChEMBL CHEMBL333888 ChEMBL CHEMBL339030 ChEMBL CHEMBL122262 ChEMBL CHEMBL331492 ChEMBL CHEMBL420159 ChEMBL CHEMBL339999 ChEMBL CHEMBL421456 ChEMBL CHEMBL123933 ChEMBL CHEMBL124794 ChEMBL CHEMBL125490 ChEMBL CHEMBL338009 ChEMBL CHEMBL122174 ChEMBL CHEMBL334080 ChEMBL 4YH ChEMBL 8PR ChEMBL CEL ChEMBL CHEMBL1084589 ChEMBL CHEMBL1085319 ChEMBL CHEMBL1085320 ChEMBL CHEMBL1087296 ChEMBL CHEMBL12089 ChEMBL CHEMBL141664 ChEMBL CHEMBL142493 ChEMBL CHEMBL144721 ChEMBL CHEMBL145203 ChEMBL CHEMBL145666 ChEMBL CHEMBL148216 ChEMBL CHEMBL1502567 ChEMBL CHEMBL1630217 ChEMBL CHEMBL1630218 ChEMBL CHEMBL1642586 ChEMBL CHEMBL1651180 ChEMBL CHEMBL2048632 ChEMBL CHEMBL2158992 ChEMBL CHEMBL2158993 ChEMBL CHEMBL2158994 ChEMBL CHEMBL2158995 ChEMBL CHEMBL2158996 ChEMBL CHEMBL2158997 ChEMBL CHEMBL2158998 ChEMBL CHEMBL2158999 ChEMBL CHEMBL2159000 ChEMBL CHEMBL2159001 ChEMBL CHEMBL2159002 ChEMBL CHEMBL223643 ChEMBL CHEMBL224214 ChEMBL CHEMBL290185 ChEMBL CHEMBL328060 ChEMBL CHEMBL358518 ChEMBL CHEMBL3741903 ChEMBL CHEMBL4161736 ChEMBL CHEMBL4162139 ChEMBL CHEMBL4163342 ChEMBL CHEMBL4164426 ChEMBL CHEMBL4164617 ChEMBL CHEMBL4164737 ChEMBL CHEMBL4167074 ChEMBL CHEMBL4168026 ChEMBL CHEMBL4168315 ChEMBL CHEMBL4168943 ChEMBL CHEMBL4169246 ChEMBL CHEMBL4169284 ChEMBL CHEMBL4169953 ChEMBL CHEMBL4170063 ChEMBL CHEMBL4170066 ChEMBL CHEMBL4171005 ChEMBL CHEMBL4171147 ChEMBL CHEMBL4171241 ChEMBL CHEMBL4171337 ChEMBL CHEMBL4172225 ChEMBL CHEMBL4172372 ChEMBL CHEMBL4172500 ChEMBL CHEMBL4172781 ChEMBL CHEMBL4172832 ChEMBL CHEMBL4174957 ChEMBL CHEMBL4175014 ChEMBL CHEMBL4175717 ChEMBL CHEMBL4176162 ChEMBL CHEMBL422481 ChEMBL CHEMBL434066 ChEMBL CHEMBL4483762 ChEMBL CHEMBL4530442 ChEMBL CHEMBL463095 ChEMBL CHEMBL469266 ChEMBL CHEMBL472329 ChEMBL CHEMBL4764996 ChEMBL CHEMBL487602 ChEMBL CHEMBL5180154 ChEMBL CHEMBL5183287 ChEMBL CHEMBL5184912 ChEMBL CHEMBL5189886 ChEMBL CHEMBL5195700 ChEMBL CHEMBL5197459 ChEMBL CHEMBL519793 ChEMBL CHEMBL520369 ChEMBL CHEMBL539923 ChEMBL CHEMBL5402153 ChEMBL CHEMBL5409878 ChEMBL CHEMBL5427043 ChEMBL CHEMBL5433605