KpATCC43816 Protein target profile

MFS transporter, sugar porter family protein

Accession: VK055_4260

Gene: AIK82804.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism Not in network UniProt A0A0H3GUX1
Length 453
Pocket druggability (P2Rank · AlphaFold DB model) 0.204
Direct ligand evidence 0 154 total records
Functional annotation 0 EC 6 GO
Target summary

Target candidate with partial support; inspect missing evidence before prioritizing.

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 (%)
37.736 Lower values reduce human off-target concern.
Human E-value
9.68e-45
Gut microbiome similarity
2.3% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Structure confidence

ColabFold pLDDT
90.08 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) 0.204
Structure A0A0H3GUX1
Pocket Pocket 1
Druggability (FPocket) 0.66
Structure A0A0H3GUX1
Pocket Pocket 26
ColabFold model
P2Rank 0.968 · Pocket 1
FPocket 0.98 · Pocket 8
Core conservation Accessory gene
Roary core
CoreCruncher accessory
Gut microbiome 108 / 4744 genomes with a hit
Prevalence 2.3%

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.

MNWFVSIAAAVAGLLFGLDIGVISGALPFITDHFTLSSQLQEWVVSSMMLGAAIGALFNGWLSFRLGRKYSLMAGAVLFVAGSIGSAFAASVEVLLVARVVLGVAVGIASYTAPLYLSEMASENVRGKMISMYQLMVTLGIVLAFLSDTAFSYSGNWRAMLGVLALPAVILIILVVFLPNSPRWLAEKGRHIEAEEVLRMLRDTSEKARDELNEIRESLKLKQGGWALFKVNRNVRRAVFLGMLLQAMQQFTGMNIIMYYAPRIFKMAGFTTTEQQMIATLVVGLTFMFATFIAVFTVDKAGRKPALKIGFSVMALGTLVLGYCLMQFDNGTASSGLSWLSVGMTMMCIAGYAMSAAPVVWILCSEIQPLKCRDFGITCSTTTNWVSNMIIGATFLTLLDAIGAAGTFWLYTALNVAFIGITFWLIPETKNVTLEHIERNLMAGEKLRNIGNR

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

6 GO

Subcellular localization

Localization
CytoplasmicMembrane

Gene Ontology (GO)

6
  • 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:0015149 Enables the transfer of a hexose sugar, a monosaccharide with 6 carbon atoms, from one side of a membrane to the other.
  • 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.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

67 records
Show feature table
Start End DB Term Name
157 179 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
96 118 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
129 147 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
385 404 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
148 158 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
277 297 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
238 261 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
5 430 ProSiteProfiles PS50850 Major facilitator superfamily (MFS) profile.
5 430 InterPro IPR020846 Major facilitator superfamily domain
403 407 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
408 426 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
7 29 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
305 327 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
365 377 PRINTS PR00171 Sugar transporter signature
365 377 InterPro IPR003663 Sugar/inositol transporter
13 23 PRINTS PR00171 Sugar transporter signature
13 23 InterPro IPR003663 Sugar/inositol transporter
342 363 PRINTS PR00171 Sugar transporter signature
342 363 InterPro IPR003663 Sugar/inositol transporter
249 259 PRINTS PR00171 Sugar transporter signature
249 259 InterPro IPR003663 Sugar/inositol transporter
96 115 PRINTS PR00171 Sugar transporter signature
96 115 InterPro IPR003663 Sugar/inositol transporter
8 428 CDD cd17315 MFS_GLUT_like
71 90 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
365 384 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
340 364 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
276 298 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
191 222 Coils Coil Coil
101 126 ProSitePatterns PS00217 Sugar transport proteins signature 2.
101 126 InterPro IPR005829 Sugar transporter, conserved site
91 95 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
118 128 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
3 444 PANTHER PTHR48020 PROTON MYO-INOSITOL COTRANSPORTER
1 28 Phobius SIGNAL_PEPTIDE Signal peptide region
408 427 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
329 339 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
385 402 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
427 453 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
44 63 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
29 43 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
130 147 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
6 440 Pfam PF00083 Sugar (and other) transporter
6 440 InterPro IPR005828 Major facilitator, sugar transporter-like
1 443 FunFam G3DSA:1.20.1250.20:FF:000008 Galactose-proton symporter (Galactose transporter)
239 261 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
1 3 Phobius SIGNAL_PEPTIDE_N_REGION N-terminal region of a signal peptide.
309 328 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
294 310 ProSitePatterns PS00216 Sugar transport proteins signature 1.
294 310 InterPro IPR005829 Sugar transporter, conserved site
159 178 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
44 64 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
179 237 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
298 308 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
4 16 Phobius SIGNAL_PEPTIDE_H_REGION Hydrophobic region of a signal peptide.
1 442 Gene3D G3DSA:1.20.1250.20 MFS general substrate transporter like domains
1 442 InterPro IPR036259 MFS transporter superfamily
262 276 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
17 28 Phobius SIGNAL_PEPTIDE_C_REGION C-terminal region of a signal peptide.
96 117 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
3 437 NCBIfam TIGR00879 sugar porter family MFS transporter
3 437 InterPro IPR003663 Sugar/inositol transporter
70 92 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
65 70 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
342 364 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
2 438 SUPERFAMILY SSF103473 MFS general substrate transporter
2 438 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

Druggability (P2Rank): high ≥ 0.5 · medium 0.2–0.49 · low < 0.2

Pocket 1 P2Rank #1
0.204
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Surrounding area
Pocket 2 P2Rank #2
0.109
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Surrounding area
Pocket 3 P2Rank #3
0.096
Likely same site as FPocket 26 2.7 Å 9 shared residues 100% of smaller site
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Surrounding area
Pocket 4 P2Rank #4
0.062
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Surrounding area
Pocket 5 P2Rank #5
0.056
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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 #26
0.66 Unusual size
Likely same site as P2Rank 3 2.7 Å 9 shared residues 100% of smaller site
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Surrounding area
Pocket 2 FPocket #10
0.269 Unusual size
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_A0A0H3GUX1
AlphaFold DB full sequence Viewing
ColabFold VK055_4260
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
37X PDB via homolog 568.7 Da · LogP -0.45 · TPSA 198.8 Open detail RCSB PDB
F00 PDB via homolog Detail RCSB PDB
OLC PDB via homolog Detail RCSB PDB
Y01 PDB via homolog Detail RCSB PDB
CHEMBL5661847 ChEMBL via homolog · pchembl 9.00 (~1.0 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
37X RCSB PDB P11169 568.7 Da LogP -0.45 TPSA 198.8 3 viol. ✓ Clean CCCCCCC(CCCCCC)(CO[C@@H]1[C@H]([C@@H]([C@H]([C@…
F00 RCSB PDB P11169 332.4 Da LogP 1.11 TPSA 99.4 ✓ Ro5 ✓ Clean C=CCCCCCCCCCO[C@H]1[C@@H]([C@H](O[C@@H]([C@@H]1…
OLC RCSB PDB P11169 356.5 Da LogP 4.92 TPSA 66.8 ✓ Ro5 ✓ Clean CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](CO)O
Y01 RCSB PDB P11169 486.7 Da LogP 7.80 TPSA 63.6 1 viol. ✓ Clean CC(C)CCC[C@@H](C)[C@H]1CC[C@@H]2[C@@]1(CC[C@H]3…

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 CHEMBL5661847 ChEMBL CHEMBL4448899 ChEMBL CHEMBL5661896 ChEMBL CHEMBL5661910 ChEMBL CHEMBL5661878 ChEMBL CHEMBL5661885 ChEMBL CHEMBL5661888 ChEMBL CHEMBL5661828 ChEMBL CHEMBL5661865 ChEMBL CHEMBL5661934 ChEMBL CHEMBL4092369 ChEMBL CHEMBL5661852 ChEMBL CHEMBL5661908 ChEMBL CHEMBL5661921 ChEMBL CHEMBL5661901 ChEMBL CHEMBL5661932 ChEMBL CHEMBL5661884 ChEMBL CHEMBL5661892 ChEMBL CHEMBL5661918 ChEMBL CHEMBL5661930 ChEMBL CHEMBL5661940 ChEMBL CHEMBL5661915 ChEMBL CHEMBL5661919 ChEMBL CHEMBL5661850 ChEMBL CHEMBL3780239 ChEMBL CHEMBL5661933 ChEMBL CHEMBL5661907 ChEMBL CHEMBL4645691 ChEMBL CHEMBL5661913 ChEMBL CHEMBL5661874 ChEMBL CHEMBL5661939 ChEMBL CHEMBL5661911 ChEMBL CHEMBL5661922 ChEMBL CHEMBL3781913 ChEMBL CHEMBL5661833 ChEMBL CHEMBL5661929 ChEMBL CHEMBL4289139 ChEMBL CHEMBL4647311 ChEMBL CHEMBL5661834 ChEMBL CHEMBL5661890 ChEMBL CHEMBL4634839 ChEMBL CHEMBL4445670 ChEMBL CHEMBL5661838 ChEMBL CHEMBL5661859 ChEMBL CHEMBL592105 ChEMBL CHEMBL3780972 ChEMBL CHEMBL3781548 ChEMBL CHEMBL5661942 ChEMBL CHEMBL3781151 ChEMBL CHEMBL4634011 ChEMBL CHEMBL3780144 ChEMBL CHEMBL4633651 ChEMBL CHEMBL5661925 ChEMBL CHEMBL3781149 ChEMBL CHEMBL547470 ChEMBL CHEMBL3780785 ChEMBL CHEMBL4638234 ChEMBL CHEMBL5661895 ChEMBL CHEMBL5661862 ChEMBL CHEMBL5661920 ChEMBL CHEMBL3781535 ChEMBL CHEMBL5661927 ChEMBL CHEMBL5661924 ChEMBL CHEMBL3780460 ChEMBL CHEMBL5661867 ChEMBL CHEMBL5661935 ChEMBL CHEMBL3780043 ChEMBL CHEMBL4648466 ChEMBL CHEMBL111738 ChEMBL CHEMBL3781331 ChEMBL CHEMBL50588 ChEMBL CHEMBL3780235 ChEMBL CHEMBL3781654 ChEMBL CHEMBL5661873 ChEMBL CHEMBL5661909 ChEMBL CHEMBL3780527 ChEMBL CHEMBL3781308 ChEMBL CHEMBL3781741 ChEMBL CHEMBL411729 ChEMBL CHEMBL4637134 ChEMBL CHEMBL535077 ChEMBL CHEMBL5661938 ChEMBL CHEMBL4635564 ChEMBL CHEMBL4089982 ChEMBL CHEMBL4634012 ChEMBL CHEMBL4635844 ChEMBL CHEMBL3781183 ChEMBL CHEMBL3781625 ChEMBL CHEMBL4638542 ChEMBL CHEMBL4647401 ChEMBL CHEMBL535750 ChEMBL CHEMBL3781194 ChEMBL CHEMBL5661853 ChEMBL CHEMBL532464 ChEMBL CHEMBL4645036 ChEMBL CHEMBL526110 ChEMBL CHEMBL3780717 ChEMBL CHEMBL581702 ChEMBL CHEMBL5661843 ChEMBL CHEMBL587029