KpATCC43816 Protein target profile

MFS transporter, sugar porter family protein

Accession: VK055_4629

Gene: AIK83163.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism Not in network UniProt A0A0H3GWT6
Length 478
Pocket druggability (P2Rank · AlphaFold DB model) 0.966
Direct ligand evidence 0 154 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 (%)
34.722 Lower values reduce human off-target concern.
Human E-value
4.3e-22
Gut microbiome similarity
3.1% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Structure confidence

ColabFold pLDDT
90.15 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) 0.966
Structure A0A0H3GWT6
Pocket Pocket 1
Druggability (FPocket) 0.873
Structure A0A0H3GWT6
Pocket Pocket 27
ColabFold model
P2Rank 0.96 · Pocket 1
FPocket 0.72 · Pocket 29
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 148 / 4744 genomes with a hit
Prevalence 3.1%

Cross-references

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

Chemistry

ChEMBL CHEMBL5661873 ChEMBL CHEMBL5661842 ChEMBL CHEMBL5661847 ChEMBL CHEMBL5661848 ChEMBL CHEMBL4448899 ChEMBL CHEMBL5661896 ChEMBL CHEMBL5661910 ChEMBL CHEMBL5661838 ChEMBL CHEMBL5661843 ChEMBL CHEMBL5661878 ChEMBL CHEMBL5661885 ChEMBL CHEMBL5661888 ChEMBL CHEMBL5661828 ChEMBL CHEMBL5661865 ChEMBL CHEMBL5661934 ChEMBL CHEMBL4092369 ChEMBL CHEMBL5661849 ChEMBL CHEMBL5661852 ChEMBL CHEMBL5661908 ChEMBL CHEMBL5661921 ChEMBL CHEMBL5661901 ChEMBL CHEMBL5661932 ChEMBL CHEMBL5661884 ChEMBL CHEMBL5661892 ChEMBL CHEMBL5661918 ChEMBL CHEMBL5661930 ChEMBL CHEMBL5661940 ChEMBL CHEMBL3781913 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 CHEMBL5661833 ChEMBL CHEMBL5661929 ChEMBL CHEMBL4289139 ChEMBL CHEMBL4647311 ChEMBL CHEMBL5661834 ChEMBL CHEMBL5661890 ChEMBL CHEMBL4634839 ChEMBL CHEMBL4445670 ChEMBL CHEMBL5661859 ChEMBL CHEMBL3781331 ChEMBL CHEMBL592105 ChEMBL CHEMBL3780972 ChEMBL CHEMBL3781548 ChEMBL CHEMBL5661942 ChEMBL CHEMBL5661845 ChEMBL CHEMBL3781151 ChEMBL CHEMBL4634011 ChEMBL CHEMBL3780144 ChEMBL CHEMBL4634177 ChEMBL CHEMBL4645191 ChEMBL CHEMBL5754009 ChEMBL CHEMBL5767973 ChEMBL CHEMBL5769176 ChEMBL CHEMBL5799651 ChEMBL CHEMBL5801060 ChEMBL CHEMBL5806013 ChEMBL CHEMBL5841689 ChEMBL CHEMBL5869783 ChEMBL CHEMBL5885621 ChEMBL CHEMBL5896977 ChEMBL CHEMBL5983371 ChEMBL CHEMBL5984458 ChEMBL CHEMBL5993683 ChEMBL CHEMBL6007266 ChEMBL CHEMBL4633651 ChEMBL CHEMBL5661925 ChEMBL CHEMBL3780372 ChEMBL CHEMBL3781149 ChEMBL CHEMBL547470 ChEMBL CHEMBL3780785 ChEMBL CHEMBL4638234 ChEMBL CHEMBL5661895 ChEMBL CHEMBL3780717 ChEMBL CHEMBL3781835 ChEMBL CHEMBL5661862 ChEMBL CHEMBL5661920 ChEMBL CHEMBL3781535 ChEMBL CHEMBL5661927 ChEMBL CHEMBL5661924 ChEMBL CHEMBL3780460 ChEMBL CHEMBL5661867 ChEMBL CHEMBL5661935 ChEMBL CHEMBL3780043 ChEMBL CHEMBL4648466 ChEMBL CHEMBL111738 ChEMBL CHEMBL4649311 ChEMBL CHEMBL50588 ChEMBL CHEMBL3780235 ChEMBL CHEMBL3781654 ChEMBL CHEMBL5661909

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.

MNNAQTHLKMGYVWTICLVAACGGLLFGYDWVVIGGAKPFYEAWFSITDPAQSGWAMSSALLGCIFGALISGWCADKLGRKLPLILSAVLFSASAWGTAVASHFDMFVVYRIVGGVGIGLASALSPLYIAEVSPAEKRGRFVAVNQLTIVIGVLAAQLINLMIAEPVEPGATQQMIVDSWNGQMGWRWMFGAELVPALAFLVLMFFVPESPRWLMKAGKPERARAALERIGSADYADRILREIAHTLEKDNNKVSYGALLAPQVKPIVIIGMVLAIFQQWCGINVIFNYAQEIFASAGFDINSTLKSIVATGVVNLVFTIAALPLVDKIGRRKLMLLGASGLTLIYVLIAGAYAMGIMGWPVLLLVLAAIAIYALTLAPVTWVLLAEIFPNRVRGLAMSLGTLALWIACFLLTYTFPLLNAGLGAAGSFLLYGVICAAGYLYILRNVPETKGITLEALEEQLAQRHTGVNAAKQEQMR

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: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.

69 records
Show feature table
Start End DB Term Name
278 288 PRINTS PR00171 Sugar transporter signature
113 138 ProSitePatterns PS00217 Sugar transport proteins signature 2.
113 138 InterPro IPR005829 Sugar transporter, conserved site
444 478 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
304 326 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
322 339 ProSitePatterns PS00216 Sugar transport proteins signature 1.
322 339 InterPro IPR005829 Sugar transporter, conserved site
16 460 Pfam PF00083 Sugar (and other) transporter
16 460 InterPro IPR005828 Major facilitator, sugar transporter-like
82 102 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
35 53 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
328 333 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
5 457 NCBIfam TIGR00879 sugar porter family MFS transporter
5 457 InterPro IPR003663 Sugar/inositol transporter
397 416 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
362 384 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
184 207 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
54 75 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
386 396 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
455 475 Coils Coil Coil
142 164 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
267 289 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
241 471 Gene3D G3DSA:1.20.1250.20 MFS general substrate transporter like domains
241 471 InterPro IPR036259 MFS transporter superfamily
307 327 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
76 81 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
417 421 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
54 75 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
16 451 ProSiteProfiles PS50850 Major facilitator superfamily (MFS) profile.
16 451 InterPro IPR020846 Major facilitator superfamily domain
108 127 PRINTS PR00171 Sugar transporter signature
108 127 InterPro IPR003663 Sugar/inositol transporter
24 34 PRINTS PR00171 Sugar transporter signature
24 34 InterPro IPR003663 Sugar/inositol transporter
278 288 InterPro IPR003663 Sugar/inositol transporter
363 384 PRINTS PR00171 Sugar transporter signature
363 384 InterPro IPR003663 Sugar/inositol transporter
386 398 PRINTS PR00171 Sugar transporter signature
386 398 InterPro IPR003663 Sugar/inositol transporter
165 183 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
184 206 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
103 107 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
108 129 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
335 357 TMHMM TMhelix 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.
15 449 CDD cd17359 MFS_XylE_like
71 88 ProSitePatterns PS00216 Sugar transport proteins signature 1.
71 88 InterPro IPR005829 Sugar transporter, conserved site
82 104 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
334 356 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
108 130 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
141 164 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.
12 34 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
362 385 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
422 444 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
5 237 Gene3D G3DSA:1.20.1250.20 MFS general substrate transporter like domains
5 237 InterPro IPR036259 MFS transporter superfamily
288 306 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
8 460 SUPERFAMILY SSF103473 MFS general substrate transporter
8 460 InterPro IPR036259 MFS transporter superfamily
422 443 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
208 266 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
396 418 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
12 34 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
5 467 PANTHER PTHR48020 PROTON MYO-INOSITOL COTRANSPORTER
1 11 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
5 466 FunFam G3DSA:1.20.1250.20:FF:000122 D-xylose transporter XylE
267 287 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
0.966
Likely same site as FPocket 27 4.0 Å 24 shared residues 77% of smaller site
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Surrounding area
Pocket 2 P2Rank #2
0.089
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Surrounding area
Pocket 3 P2Rank #3
0.085
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Surrounding area
Pocket 4 P2Rank #4
0.038
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Surrounding area
Pocket 5 P2Rank #5
0.03
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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 #27
0.873 Unusual size
Likely same site as P2Rank 1 4.0 Å 24 shared residues 77% 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_A0A0H3GWT6
AlphaFold DB full sequence Viewing
ColabFold VK055_4629
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
CHEMBL5661873 ChEMBL via homolog · pchembl 9.52 (~0.3 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.