Protein target profile

KP13_15122

Arabinose-proton symporter

Genome: KpKP13 Gene: araE ANJ86578.1 3D evidence: AlphaFold DB model + ColabFold model UniProt A0A0H3GUX1
Length 473
Pocket druggability 0.66
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 (%)
37.363 Lower values reduce human off-target concern.
Human E-value
2.05e-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 (%)
0.0 Higher values support similarity to known essential genes.

Localization

Localization
CytoplasmicMembrane

Structure confidence

ColabFold pLDDT
88.2 0-100 confidence; >70 supports local structural interpretation.

Binding-site evidence

AlphaFold DB / UniProt model

The selected pocket score is the FPocket value used for ranking after applying the curated structure priority. It estimates small-molecule pocket quality; it is not experimental binding evidence. The 3D viewer may show a different loaded structure, so visible pockets can differ.

FPocket 0.66
Structure A0A0H3GUX1
Pocket Pocket 26
P2Rank 0.204
Structure A0A0H3GUX1
Pocket Pocket 1
ColabFold model
FPocket 0.032 · Pocket 3
P2Rank 0.965 · Pocket 1
Core conservation Accessory gene
Roary accessory
CoreCruncher accessory
Gut microbiome 108 / 4744 genomes with a hit
Prevalence 2.3%

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

Sequence

Primary amino-acid sequence viewer.

MTSISNDSTLSPRTQRDTRRMNWFVSIAAAVAGLLFGLDIGVISGALPFITDHFTLSSQLQEWVVSSMMLGAAIGALFNGWLSFRLGRKYSLMAGAVLFVAGSIGSAFAASVEVLLVARVVLGVAVGIASYTAPLYLSEMASENVRGKMISMYQLMVTLGIVLAFLSDTAFSYSGNWRAMLGVLALPAVILIILVVFLPNSPRWLAEKGRHIEAEEVLRMLRDTSEKARDELNEIRESLKLKQGGWALFKVNRNVRRAVFLGMLLQAMQQFTGMNIIMYYAPRIFKMAGFTTTEQQMIATLVVGLTFMFATFIAVFTVDKAGRKPALKIGFSVMALGTLVLGYCLMQFDNGTASSGLSWLSVGMTMMCIAGYAMSAAPVVWILCSEIQPLKCRDFGITCSTTTNWVSNMIIGATFLTLLDAIGAAGTFWLYTALNVAFIGITFWLIPETKNVTLEHIERNLMAGEKLRNIGNR

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

6 GO

Gene Ontology (GO)

6
  • GO:0016020 A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it.
  • 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.
  • 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.

65 records
Show feature table
Start End DB Term Name
314 330 ProSitePatterns PS00216 Sugar transport proteins signature 1.
314 330 InterPro IPR005829 Sugar transporter, conserved site
21 43 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
405 422 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
329 348 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
447 473 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
325 347 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
121 146 ProSitePatterns PS00217 Sugar transport proteins signature 2.
121 146 InterPro IPR005829 Sugar transporter, conserved site
138 148 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
21 43 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
14 462 Gene3D G3DSA:1.20.1250.20 MFS general substrate transporter like domains
14 462 InterPro IPR036259 MFS transporter superfamily
111 115 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
150 167 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
8 457 NCBIfam TIGR00879 sugar porter family MFS transporter
8 457 InterPro IPR003663 Sugar/inositol transporter
385 404 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
63 84 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
91 110 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
360 384 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
44 62 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
63 83 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
349 359 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
1 20 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
259 281 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
12 458 SUPERFAMILY SSF103473 MFS general substrate transporter
12 458 InterPro IPR036259 MFS transporter superfamily
85 90 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
428 446 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
149 167 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
423 427 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
28 448 CDD cd17315 MFS_GLUT_like
90 112 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
116 138 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
18 464 PANTHER PTHR48020 PROTON MYO-INOSITOL COTRANSPORTER
282 296 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
297 317 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.
258 281 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
15 463 FunFam G3DSA:1.20.1250.20:FF:000008 Galactose-proton symporter (Galactose transporter)
211 242 Coils Coil Coil
318 328 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
199 257 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
179 198 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
177 199 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
428 447 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
26 460 Pfam PF00083 Sugar (and other) transporter
26 460 InterPro IPR005828 Major facilitator, sugar transporter-like
362 383 PRINTS PR00171 Sugar transporter signature
362 383 InterPro IPR003663 Sugar/inositol transporter
269 279 PRINTS PR00171 Sugar transporter signature
269 279 InterPro IPR003663 Sugar/inositol transporter
33 43 PRINTS PR00171 Sugar transporter signature
33 43 InterPro IPR003663 Sugar/inositol transporter
116 135 PRINTS PR00171 Sugar transporter signature
116 135 InterPro IPR003663 Sugar/inositol transporter
385 397 PRINTS PR00171 Sugar transporter signature
385 397 InterPro IPR003663 Sugar/inositol transporter
168 178 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
405 424 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
296 318 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.
25 450 ProSiteProfiles PS50850 Major facilitator superfamily (MFS) profile.
25 450 InterPro IPR020846 Major facilitator superfamily domain

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 · FPocket

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

Site 1 FPocket #26
0.66
Likely same site as P2Rank 3 2.7 Å 9 shared residues 100% of smaller site
Unusual size
Show in viewer
Surrounding area
Site 2 FPocket #10
0.269
Unusual size
Show in viewer
Surrounding area

Binding pockets · P2Rank

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

Site 1 P2Rank #1
0.204
Show in viewer
Surrounding area
Site 2 P2Rank #2
0.109
Show in viewer
Surrounding area
Site 3 P2Rank #3
0.096
Likely same site as FPocket 26 2.7 Å 9 shared residues 100% of smaller site
Show in viewer
Surrounding area
Site 4 P2Rank #4
0.062
Show in viewer
Surrounding area
Site 5 P2Rank #5
0.056
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 KP13_15122
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.