Genome KpATCC43816

Protein target profile

sugar (and other) transporter family protein

Accession: VK055_4371

Gene: AIK82914.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism Not in network UniProt A0A0H3GUI6
Length 473
Pocket druggability (P2Rank) 0.935
Direct ligand evidence 0 86 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 (%)
30.476 Lower values reduce human off-target concern.
Human E-value
5.18e-09
Gut microbiome similarity
0.7% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Structure confidence

ColabFold pLDDT
85.32 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) 0.935
Structure A0A0H3GUI6
Pocket Pocket 1
Druggability (FPocket) 0.976
Structure A0A0H3GUI6
Pocket Pocket 28
ColabFold model
P2Rank 0.986 · Pocket 1
FPocket 0.803 · Pocket 27
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 32 / 4744 genomes with a hit
Prevalence 0.7%

Cross-references

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

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.

MSTLPVDNPGIASVPVSSVGDVARLINSGKEQAKYARMIVFLALGGVFLDAYDLTTLSYGIDDVVREFQLSPLLTGLVTSSIMVGTIVGNIIGGWLTDKYGRYSVFMADMFFFVISAIAAGLAPNVWVLIGARFLMGIGVGIDLPVAMSYLAEFSRFAGKGNKAARLAAWCPMWYAASTVCFLIIFGLYFLLPQEHLDWLWRASLLFGAVPALLIIAVRSRFMNESPLWAANQGDLTSAVRILRDSWGIHAHEVPAAKPAPAPKVSFRVLFEKPYRERTIVAGVMNICISFEYTAIAFFLPSILAQFLGAGVFETISASLGLNALFAFTGGLLGMHLAWKYPSRHVAIAGFALQFVALIVLALVGQPHATAGIVLAIAMLGLWLFAEGFGPGAQLMIYPALSYPTAIRATGVGFSRALSGIGSALALFILPLLQASLGTQMFWVVSLAAIIPIFFLLAVRHEPTREDIDALHE

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

5 GO

Subcellular localization

Localization
CytoplasmicMembrane

Gene Ontology (GO)

5
  • 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:0016020 A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it.
  • 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.
  • GO:0046943 Enables the transfer of carboxylic acids from one side of a membrane to the other. Carboxylic acids are organic acids containing one or more carboxyl (COOH) groups or anions (COO-).

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

47 records
Show feature table
Start End DB Term Name
73 96 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
39 61 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
173 193 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
39 464 ProSiteProfiles PS50850 Major facilitator superfamily (MFS) profile.
39 464 InterPro IPR020846 Major facilitator superfamily domain
320 339 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
219 279 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
103 124 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
366 370 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
199 218 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
40 459 CDD cd17316 MFS_SV2_like
153 172 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
346 365 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
371 393 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
439 458 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
441 459 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
27 473 Gene3D G3DSA:1.20.1250.20 MFS general substrate transporter like domains
27 473 InterPro IPR036259 MFS transporter superfamily
194 198 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
460 473 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
167 189 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
39 61 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
125 129 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
1 38 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
71 93 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
100 122 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
132 154 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
199 218 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
320 339 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
414 435 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
33 466 PANTHER PTHR23508 CARBOXYLIC ACID TRANSPORTER PROTEIN HOMOLOG
301 319 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
283 305 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
346 365 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
340 345 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
130 152 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
280 300 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
412 434 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
62 72 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
63 457 Pfam PF00083 Sugar (and other) transporter
63 457 InterPro IPR005828 Major facilitator, sugar transporter-like
436 440 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
97 102 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
394 413 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
369 391 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
33 466 SUPERFAMILY SSF103473 MFS general substrate transporter
33 466 InterPro IPR036259 MFS transporter 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

Probability: high ≥ 0.5 · medium 0.2–0.49 · low < 0.2

Pocket 1 P2Rank #1
0.935
Likely same site as FPocket 28 3.2 Å 25 shared residues 93% of smaller site
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Surrounding area
Pocket 2 P2Rank #2
0.671
Likely same site as FPocket 24 4.9 Å 12 shared residues 75% of smaller site
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Surrounding area
Pocket 3 P2Rank #3
0.187
Show in viewer
Surrounding area
Pocket 4 P2Rank #4
0.099
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Surrounding area
Pocket 5 P2Rank #5
0.068
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Surrounding area

Binding pockets · FPocket

Druggability: high ≥ 0.7 · medium 0.4–0.69 · low < 0.4

Pocket 1 FPocket #28
0.976 Unusual size
Likely same site as P2Rank 1 3.2 Å 25 shared residues 93% of smaller site
Show in viewer
Surrounding area
Pocket 2 FPocket #24
0.247
Likely same site as P2Rank 2 4.9 Å 12 shared residues 75% 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_A0A0H3GUI6
AlphaFold DB full sequence Viewing
ColabFold VK055_4371
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

Bioactivity evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 36 records from similar proteins
Structural ligands 0 0 loaded crystals
Measured bioactivity 36 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
CHEMBL1146 ChEMBL via homolog pchembl 7.52 (~30.2 nM) 462.5 Da · LogP -0.23 · TPSA 150.5 Open detail ChEMBL
CHEMBL376503 ChEMBL via homolog · pchembl 7.05 (~89.1 nM) Detail ChEMBL
CHEMBL1435 ChEMBL via homolog · pchembl 6.75 (~177.8 nM) Detail ChEMBL
CHEMBL507674 ChEMBL via homolog · pchembl 6.68 (~208.9 nM) Detail ChEMBL
CLS ChEMBL via homolog · pchembl 6.66 (~218.8 nM) Detail ChEMBL

Bioactivity inferred from similar proteins in ChEMBL. Score = pchembl (−log Ki/IC₅₀; higher = more potent).

Show only:
Ligand UniProt (homolog) pchembl MW · LogP · TPSA Lipinski PAINS SMILES
CHEMBL1146 ChEMBL Q4U2R8 7.52 ~30.2 nM 462.5 Da LogP -0.23 TPSA 150.5 ✓ Ro5 ✓ Clean Cn1nnnc1SCC1=C(C(=O)O)N2C(=O)[C@@H](NC(=O)[C@H]…
CHEMBL376503 ChEMBL Q8VC69 7.05 ~89.1 nM 647.9 Da LogP 7.02 TPSA 87.7 2 viol. ✓ Clean O=C(O)c1ccccc1-c1c2cc(Br)c(=O)c(Br)c-2oc2c(Br)c…
CHEMBL1435 ChEMBL Q4U2R8 6.75 ~177.8 nM 454.5 Da LogP -0.64 TPSA 156.1 1 viol. ✓ Clean Cc1nnc(SCC2=C(C(=O)O)N3C(=O)[C@@H](NC(=O)Cn4cnn…
CHEMBL507674 ChEMBL Q4U2R8 6.68 ~208.9 nM 645.7 Da LogP -1.11 TPSA 220.3 2 viol. ✓ Clean CCN1CCN(C(=O)N[C@@H](C(=O)N[C@@H]2C(=O)N3C(C(=O…
CLS ChEMBL Q4U2R8 6.66 ~218.8 nM 396.4 Da LogP 0.59 TPSA 113.0 ✓ Ro5 ✓ Clean CC(=O)OCC1=C(N2[C@@H]([C@@H](C2=O)NC(=O)Cc3cccs…
CHEMBL161 ChEMBL Q4U2R8 6.64 ~229.1 nM 554.6 Da LogP -1.20 TPSA 215.2 2 viol. ✓ Clean CO/N=C(\C(=O)N[C@@H]1C(=O)N2C(C(=O)O)=C(CSc3nc(…
REF ChEMBL Q4U2R8 6.57 ~269.2 nM 302.2 Da LogP 1.31 TPSA 141.3 ✓ Ro5 Alert c1c2c-3c(c(c1O)O)OC(=O)c4c3c(c(c(c4)O)O)OC2=O
CHEMBL2075007 ChEMBL O35956 6.40 ~398.1 nM 267.4 Da LogP 1.60 TPSA 55.4 ✓ Ro5 ✓ Clean COC(=O)[C@@H](CSCc1ccccc1)NC(C)=O
0L1 ChEMBL Q8VC69 6.39 ~407.4 nM 146.1 Da LogP 0.72 TPSA 74.6 ✓ Ro5 ✓ Clean C(CCC(=O)O)CC(=O)O
CHEMBL571 ChEMBL O35956 6.30 ~501.2 nM 254.3 Da LogP 3.11 TPSA 54.4 ✓ Ro5 ✓ Clean CC(C(=O)O)c1cccc(C(=O)c2ccccc2)c1
CHEMBL316157 ChEMBL Q4U2R8 6.13 ~741.3 nM 415.5 Da LogP -0.32 TPSA 93.4 ✓ Ro5 ✓ Clean O=C(Cc1cccs1)N[C@@H]1C(=O)N2C(C(=O)[O-])=C(C[n+…
1FL ChEMBL Q4U2R8 6.07 ~851.1 nM 250.2 Da LogP 3.04 TPSA 57.5 ✓ Ro5 ✓ Clean c1cc(c(cc1c2ccc(cc2F)F)C(=O)O)O
7BA ChEMBL Q4U2R8 316.4 Da LogP 3.60 TPSA 57.2 ✓ Ro5 ✓ Clean COc1ccc(cc1O)/C=C\c2cc(c(c(c2)OC)OC)OC
AIC ChEMBL O88909 349.4 Da LogP 0.32 TPSA 112.7 ✓ Ro5 ✓ Clean CC1([C@@H](N2[C@H](S1)[C@@H](C2=O)NC(=O)[C@@H](…
CFX ChEMBL O88909 427.5 Da LogP 0.10 TPSA 148.3 ✓ Ro5 ✓ Clean CO[C@@]1([C@@H]2N(C1=O)C(=C(CS2)COC(=O)N)C(=O)O…
CHEMBL1201195 ChEMBL Q8VC69 471.5 Da LogP -0.73 TPSA 163.3 1 viol. ✓ Clean CO[C@@]1(NC(=O)CSCC#N)C(=O)N2C(C(=O)O)=C(CSc3nn…
CHEMBL1214 ChEMBL Q8VC69 378.4 Da LogP 0.49 TPSA 124.0 ✓ Ro5 ✓ Clean CC1(C)S[C@@H]2[C@H](NC(=O)C(C(=O)O)c3ccccc3)C(=…
CHEMBL1443 ChEMBL O88909 414.5 Da LogP 2.48 TPSA 95.9 ✓ Ro5 ✓ Clean CCOc1ccc2ccccc2c1C(=O)N[C@@H]1C(=O)N2[C@@H]1SC(…
CHEMBL1537 ChEMBL O88909 461.5 Da LogP 0.09 TPSA 148.1 ✓ Ro5 ✓ Clean CC1(C)S[C@@H]2[C@H](NC(=O)[C@H](NC(=O)N3CCNC3=O…
CHEMBL172513 ChEMBL O76082 161.2 Da LogP -1.81 TPSA 60.4 ✓ Ro5 ✓ Clean C[N+](C)(C)CC(O)CC(=O)[O-]
CHEMBL1956820 ChEMBL Q4U2R8 957.5 Da LogP 9.55 TPSA 181.3 3 viol. ✓ Clean COc1ccc2c(O[C@@H]3C[C@H]4C(=O)N[C@]5(P(=O)(O)Cc…
CHEMBL222913 ChEMBL O88909 523.6 Da LogP 0.98 TPSA 177.4 2 viol. ✓ Clean CO/N=C(\C(=O)N[C@@H]1C(=O)N2C(C(=O)O)=C(CSC(=O)…
CHEMBL4077758 ChEMBL O76082 534.5 Da LogP -1.61 TPSA 180.1 2 viol. ✓ Clean C[N+](C)(C)CC(CC(=O)[O-])OC(=O)CCCCC(=O)Nc1ccn(…
CHEMBL4085610 ChEMBL O76082 590.6 Da LogP -0.05 TPSA 180.1 2 viol. ✓ Clean C[N+](C)(C)CC(CC(=O)[O-])OC(=O)CCCCCCCCC(=O)Nc1…
CHEMBL4095790 ChEMBL O76082 506.5 Da LogP -2.39 TPSA 180.1 2 viol. ✓ Clean C[N+](C)(C)CC(CC(=O)[O-])OC(=O)CCC(=O)Nc1ccn([C…
CHEMBL4103546 ChEMBL O76082 562.6 Da LogP -0.83 TPSA 180.1 2 viol. ✓ Clean C[N+](C)(C)CC(CC(=O)[O-])OC(=O)CCCCCCC(=O)Nc1cc…
CHEMBL41194 ChEMBL Q4U2R8 426.5 Da LogP 4.64 TPSA 89.3 ✓ Ro5 ✓ Clean CCCc1nc2c(n1Cc1ccc(-c3ccccc3-c3nnn[nH]3)cc1)C(=…
CHEMBL575 ChEMBL O88909 380.4 Da LogP 0.95 TPSA 105.2 ✓ Ro5 ✓ Clean COc1cccc(OC)c1C(=O)N[C@@H]1C(=O)N2[C@@H]1SC(C)(…
CHEMBL819 ChEMBL O88909 401.4 Da LogP 1.90 TPSA 112.7 ✓ Ro5 ✓ Clean Cc1onc(-c2ccccc2)c1C(=O)N[C@@H]1C(=O)N2[C@@H]1S…
CHEMBL891 ChEMBL O88909 435.9 Da LogP 2.55 TPSA 112.7 ✓ Ro5 ✓ Clean Cc1onc(-c2ccccc2Cl)c1C(=O)N[C@@H]1C(=O)N2[C@@H]…
CHEMBL893 ChEMBL Q8VC69 470.3 Da LogP 3.20 TPSA 112.7 ✓ Ro5 ✓ Clean Cc1onc(-c2c(Cl)cccc2Cl)c1C(=O)N[C@@H]1C(=O)N2[C…
CHEMBL897 ChEMBL Q4U2R8 285.4 Da LogP 2.20 TPSA 74.7 ✓ Ro5 ✓ Clean CCCN(CCC)S(=O)(=O)c1ccc(C(=O)O)cc1
PNN ChEMBL O88909 334.4 Da LogP 0.86 TPSA 86.7 ✓ Ro5 ✓ Clean CC1([C@@H](N2[C@H](S1)[C@@H](C2=O)NC(=O)Cc3cccc…
PNV ChEMBL O88909 350.4 Da LogP 0.70 TPSA 95.9 ✓ Ro5 ✓ Clean CC1([C@@H](N2[C@H](S1)[C@@H](C2=O)NC(=O)COc3ccc…
TAZ ChEMBL O88909 300.3 Da LogP -1.52 TPSA 122.5 ✓ Ro5 ✓ Clean C[C@@]1([C@@H](N2[C@H](S1(=O)=O)CC2=O)C(=O)O)Cn…
WPP ChEMBL O88909 517.6 Da LogP -0.24 TPSA 156.4 1 viol. ✓ Clean CCN1CCN(C(=O)C1=O)C(=O)N[C@H](c2ccccc2)C(=O)N[C…

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.