KpKP13 Protein target profile

D-galactonate transporter

Accession: KP13_04619

Gene: AHE44121.1 3D evidence: AlphaFold DB model + ColabFold model UniProt A0A0H3GPG6
Length 423
Pocket druggability (P2Rank · AlphaFold DB model) 0.962
Direct ligand evidence 0 81 total records
Functional annotation 0 EC 2 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 (%)
32.955 Lower values reduce human off-target concern.
Human E-value
3.03e-06
Gut microbiome similarity
0.4% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

Essential (DEG)
Y
DEG identity (%)
42.431 Higher values support similarity to known essential genes.
DEG E-value
2.46e-120 Smaller values mean stronger essential-gene similarity.

Structure confidence

ColabFold pLDDT
87.65 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) 0.962
Structure A0A0H3GPG6
Pocket Pocket 1
Druggability (FPocket) 0.409
Structure A0A0H3GPG6
Pocket Pocket 22
ColabFold model
P2Rank 0.969 · Pocket 1
FPocket 0.793 · Pocket 22
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 20 / 4744 genomes with a hit
Prevalence 0.4%

Cross-references

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

Sequence

Primary amino-acid sequence viewer.

MRRSRRRIGILALLAIGTMINYLDRTVLGIAAPKLTAELGIDPAIMGILFSAFAWTYALAQIPGGLFLDRFGNKVTYFLSLTLWSLFTLFHGMAVGLKTLLLCRFGLGISEAPCFPVNSRVVSAWFPQQERAKATAVYTVGEYLGLACFAPLLFWIMDGFGWRVLFVSVGAVGILFALVWWRCYREPHEDPRLSQQEREHIENGGGLSAPTDQQVAFSWPLVRQLLSKRQIIGASIGQFAGNTVLVFFLTWFPTWLATERHMPWLKVGFFSILPFVAAAGGVMFGGWLSDKLLKATGSANLGRKLPIVAGLLMASCIITANWLESDLAVILVMSFAFFGQGMVGLGWTLISDIAPKGLGGLTGGLFNFCANLAGILTPLVIGFIVAGFGNFFYALIYIGGAALLGVVAYLFILGDVKRIELSQ

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

2 GO

Subcellular localization

Localization
CytoplasmicMembrane

Gene Ontology (GO)

2
  • 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.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

45 records
Show feature table
Start End DB Term Name
3 420 SUPERFAMILY SSF103473 MFS general substrate transporter
3 420 InterPro IPR036259 MFS transporter superfamily
8 18 Phobius SIGNAL_PEPTIDE_H_REGION Hydrophobic region of a signal peptide.
391 413 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
285 304 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
1 7 Phobius SIGNAL_PEPTIDE_N_REGION N-terminal region of a signal peptide.
7 412 PANTHER PTHR11662 SOLUTE CARRIER FAMILY 17
14 378 Pfam PF07690 Major Facilitator Superfamily
14 378 InterPro IPR011701 Major facilitator superfamily
1 199 Gene3D G3DSA:1.20.1250.20 MFS general substrate transporter like domains
1 199 InterPro IPR036259 MFS transporter superfamily
75 97 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
364 386 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
10 417 ProSiteProfiles PS50850 Major facilitator superfamily (MFS) profile.
10 417 InterPro IPR020846 Major facilitator superfamily domain
351 361 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
69 74 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
182 230 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
45 68 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
220 421 Gene3D G3DSA:1.20.1250.20 MFS general substrate transporter like domains
220 421 InterPro IPR036259 MFS transporter superfamily
231 252 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
301 323 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
160 181 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
1 29 Phobius SIGNAL_PEPTIDE Signal peptide region
159 181 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.
386 390 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
9 31 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
7 412 CDD cd17319 MFS_ExuT_GudP_like
414 423 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
329 350 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
324 328 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
98 159 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
46 68 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
19 29 Phobius SIGNAL_PEPTIDE_C_REGION C-terminal region of a signal peptide.
329 351 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
30 44 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
305 323 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
253 263 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
75 97 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
264 284 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
391 413 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
231 252 Phobius TRANSMEMBRANE 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.

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.

Download VMD script Full viewer

Loading 3D structure...

Drag to rotate — click the view, then scroll to zoom.

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
0.962
Show in viewer
Surrounding area
Pocket 2 P2Rank #2
0.329
Show in viewer
Surrounding area
Pocket 3 P2Rank #3
0.088
Likely same site as FPocket 22 1.1 Å 11 shared residues 100% of smaller site
Show in viewer
Surrounding area
Pocket 4 P2Rank #4
0.033
Show in viewer
Surrounding area
Pocket 5 P2Rank #5
0.028
Show in viewer
Surrounding area

Binding pockets · FPocket

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

Pocket 1 FPocket #22
0.409
Likely same site as P2Rank 3 1.1 Å 11 shared residues 100% 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_A0A0H3GPG6
AlphaFold DB full sequence Viewing
ColabFold KP13_04619
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.

81 records
Chemistry signal

Structural and bioactivity evidence are both available for this target.

Direct evidence 0 same-protein records
Transferred evidence 31 records from similar proteins
Structural ligands 1 0 loaded crystals
Measured bioactivity 30 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
J0M PDB via homolog 196.2 Da · LogP -3.49 · TPSA 138.5 Open detail RCSB PDB
CHEMBL1200712 ChEMBL via homolog · pchembl 7.40 (~39.8 nM) Detail ChEMBL
Y0X ChEMBL via homolog · pchembl 6.72 (~190.5 nM) Detail ChEMBL
CHEMBL149394 ChEMBL via homolog Detail ChEMBL
CHEMBL1590868 ChEMBL via homolog 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
J0M RCSB PDB J7QAK3 196.2 Da LogP -3.49 TPSA 138.5 1 viol. ✓ Clean C([C@H]([C@@H]([C@@H]([C@H](C(=O)O)O)O)O)O)O

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.