KpKP13 Protein target profile

Galactose-proton symporter

Accession: KP13_02727

Gene: galP AHE42705.1 3D evidence: AlphaFold DB model + ColabFold model UniProt A0A0H3GVD3
Length 464
Pocket druggability (P2Rank · AlphaFold DB model) 0.954
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 (%)
37.624 Lower values reduce human off-target concern.
Human E-value
1.09e-12
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.

Structure confidence

ColabFold pLDDT
90.51 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) 0.954
Structure A0A0H3GVD3
Pocket Pocket 1
Druggability (FPocket) 0.253
Structure A0A0H3GVD3
Pocket Pocket 20
ColabFold model
P2Rank 0.979 · Pocket 1
FPocket 0.904 · Pocket 10
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 110 / 4744 genomes with a hit
Prevalence 2.3%

Sequence

Primary amino-acid sequence viewer.

MPDNKKQGRSNKTMTFFVCFLAALAGLLFGLDIGVIAGALPFIANEFQISAHTQEWVVSSMMFGAAVGAVGSGWLSFKLGRKKSLMIGAILFVAGSLFSAAAPNVEILLVSRVLLGLAVGVASYTAPLYLSEIAPEKIRGSMISMYQLMITIGILGAYLSDTAFSYSGAWRWMLGVIIIPAVLLLIGVIFLPDSPRWFAAKRRFVDAERVLLRLRDTSAEAKRELDEIRESLKVKQSGWSLFKDNSNFRRAVFLGILLQVMQQFTGMNVIMYYAPKIFELAGYANTTEQMWGTVIVGLTNVLATFIAIGLVDRWGRKPTLILGFIVMAAGMGVLGTMMHIGIHSSTAQYIAVLMLLMFIVGFAMSAGPLIWVLCSEIQPLKGRDFGITCSTATNWIANMIVGATFLTMLNSLGSANTFWVYGGLNVLFILLTLWLIPETKNVSLEHIERNLMQGRPLREIGARD

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

6 GO

Subcellular localization

Localization
CytoplasmicMembrane

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
21 43 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
13 448 SUPERFAMILY SSF103473 MFS general substrate transporter
13 448 InterPro IPR036259 MFS transporter superfamily
104 108 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
193 250 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
7 447 NCBIfam TIGR00879 sugar porter family MFS transporter
7 447 InterPro IPR003663 Sugar/inositol transporter
109 130 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
252 274 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
161 171 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
407 417 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
18 450 Pfam PF00083 Sugar (and other) transporter
18 450 InterPro IPR005828 Major facilitator, sugar transporter-like
108 130 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
374 384 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
58 77 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
169 191 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
211 231 Coils Coil Coil
1 15 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
8 453 Gene3D G3DSA:1.20.1250.20 MFS general substrate transporter like domains
8 453 InterPro IPR036259 MFS transporter superfamily
290 311 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
131 141 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
16 44 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
84 103 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
45 55 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
21 438 CDD cd17315 MFS_GLUT_like
307 323 ProSitePatterns PS00216 Sugar transport proteins signature 1.
307 323 InterPro IPR005829 Sugar transporter, conserved site
172 192 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
18 440 ProSiteProfiles PS50850 Major facilitator superfamily (MFS) profile.
18 440 InterPro IPR020846 Major facilitator superfamily domain
343 347 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
417 436 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
348 373 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
418 436 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
114 139 ProSitePatterns PS00217 Sugar transport proteins signature 2.
114 139 InterPro IPR005829 Sugar transporter, conserved site
84 103 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
320 342 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
56 77 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
142 160 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
142 159 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
5 452 PANTHER PTHR48020 PROTON MYO-INOSITOL COTRANSPORTER
251 274 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
385 406 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
289 311 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
275 289 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
385 407 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
26 36 PRINTS PR00171 Sugar transporter signature
26 36 InterPro IPR003663 Sugar/inositol transporter
262 272 PRINTS PR00171 Sugar transporter signature
262 272 InterPro IPR003663 Sugar/inositol transporter
352 373 PRINTS PR00171 Sugar transporter signature
352 373 InterPro IPR003663 Sugar/inositol transporter
375 387 PRINTS PR00171 Sugar transporter signature
375 387 InterPro IPR003663 Sugar/inositol transporter
109 128 PRINTS PR00171 Sugar transporter signature
109 128 InterPro IPR003663 Sugar/inositol transporter
8 453 FunFam G3DSA:1.20.1250.20:FF:000008 Galactose-proton symporter (Galactose transporter)
318 340 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
78 83 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
312 319 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
350 372 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
437 464 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.

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
0.954
Likely same site as FPocket 20 3.2 Å 30 shared residues 88% of smaller site
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Surrounding area
Pocket 2 P2Rank #2
0.079
Likely same site as FPocket 20 5.6 Å 12 shared residues 92% of smaller site
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Surrounding area
Pocket 3 P2Rank #3
0.042
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Surrounding area
Pocket 4 P2Rank #4
0.026
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Surrounding area
Pocket 5 P2Rank #5
0.019
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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 #20
0.253 Unusual size
Likely same site as P2Rank 1 3.2 Å 30 shared residues 88% 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_A0A0H3GVD3
AlphaFold DB full sequence Viewing
ColabFold KP13_02727
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