KpKP13 Protein target profile

branched-chain amino acid transport ATP-binding protein

Accession: KP13_02118

Gene: AHE46118.1 3D evidence: AlphaFold DB model + ColabFold model UniProt A0A0H3GN98
Length 260
Pocket druggability (P2Rank · AlphaFold DB model) 0.106
Direct ligand evidence 0 62 total records
Functional annotation 0 EC 10 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 (%)
31.915 Lower values reduce human off-target concern.
Human E-value
1.34e-07
Gut microbiome similarity
18.1% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

Essential (DEG)
Y
DEG identity (%)
47.39 Higher values support similarity to known essential genes.
DEG E-value
3.89e-82 Smaller values mean stronger essential-gene similarity.

Structure confidence

ColabFold pLDDT
90.77 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) 0.106
Structure A0A0H3GN98
Pocket Pocket 1
Druggability (FPocket) 0.128
Structure A0A0H3GN98
Pocket Pocket 2
ColabFold model
P2Rank 0.262 · Pocket 1
FPocket 0.147 · Pocket 2
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 857 / 4744 genomes with a hit
Prevalence 18.1%

Sequence

Primary amino-acid sequence viewer.

MAENNVILQVQDVTMQFGGLRAIDNVSFHVDEAEIFGLIGPNGAGKTTLFNVITANYKPTSGSVTLAGTSLKGLKPNQVVNAGIARTFQNIRLFNSMTVLENVMVGLDRASRYSLLEAALHIGRYFPAERAAKAKAMAILEDIGIAHFAHMQATNLSYGNQRKVEIARALATAPKLLLLDEPAAGMNPKETEDLAELIFRMRHDYQLSVLLIEHDMPFVNRLCERVMVLEYGKPLFSGLMAEAIQHPDVISAYLGEANYA

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

10 GO

Subcellular localization

Localization
Cytoplasmic

Gene Ontology (GO)

10
  • GO:0005524 Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
  • GO:0016887 Catalysis of the reaction: ATP + H2O = ADP + H+ phosphate. ATP hydrolysis is used in some reactions as an energy source, for example to catalyze a reaction or drive transport against a concentration gradient.
  • 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:0015188 Enables the transfer of L-isoleucine from one side of a membrane to the other. L-isoleucine is (2R*,3R*)-2-amino-3-methylpentanoic acid.
  • GO:0015192 Enables the transfer of L-phenylalanine from one side of a membrane to the other. L-phenylalanine is 2-amino-3-phenylpropanoic acid.
  • GO:0005304 Enables the transfer of L-valine from one side of a membrane to the other. L-valine is 2-amino-3-methylbutanoic acid.
  • GO:0042941 The process in which D-alanine, the D-enantiomer of 2-aminopropanoic acid, is transported across a lipid bilayer, from one side of a membrane to the other by means of some agent such as a transporter or pore.
  • GO:0015808 The directed movement of L-alanine, the L-enantiomer of 2-aminopropanoic acid, into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
  • GO:1903806 The directed movement of L-isoleucine from outside of a cell, across the plasma membrane and into the cytosol.
  • GO:1903805 The directed movement of L-valine from outside of a cell, across the plasma membrane and into the cytosol.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

15 records
Show feature table
Start End DB Term Name
8 249 CDD cd03219 ABC_Mj1267_LivG_branched
8 256 ProSiteProfiles PS50893 ATP-binding cassette, ABC transporter-type domain profile.
8 256 InterPro IPR003439 ABC transporter-like, ATP-binding domain
24 183 Pfam PF00005 ABC transporter
24 183 InterPro IPR003439 ABC transporter-like, ATP-binding domain
156 170 ProSitePatterns PS00211 ABC transporters family signature.
156 170 InterPro IPR017871 ABC transporter-like, conserved site
32 232 SMART SM00382 AAA_5
32 232 InterPro IPR003593 AAA+ ATPase domain
6 256 SUPERFAMILY SSF52540 P-loop containing nucleoside triphosphate hydrolases
6 256 InterPro IPR027417 P-loop containing nucleoside triphosphate hydrolase
3 256 FunFam G3DSA:3.40.50.300:FF:000421 Branched-chain amino acid ABC transporter ATP-binding protein
1 257 Gene3D G3DSA:3.40.50.300 -
1 257 InterPro IPR027417 P-loop containing nucleoside triphosphate hydrolase
3 257 PANTHER PTHR45772 CONSERVED COMPONENT OF ABC TRANSPORTER FOR NATURAL AMINO ACIDS-RELATED

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
0.106
Show in viewer
Surrounding area
Pocket 2 P2Rank #2
0.099
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_A0A0H3GN98
AlphaFold DB full sequence Viewing
ColabFold KP13_02118
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.

62 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 12 records from similar proteins
Structural ligands 12 0 loaded crystals
Measured bioactivity 0 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
AGS PDB via homolog 523.2 Da · LogP -1.51 · TPSA 262.1 Open detail RCSB PDB
ANP PDB via homolog Detail RCSB PDB
AOV PDB via homolog Detail RCSB PDB
CZJ PDB via homolog Detail RCSB PDB
DCQ PDB via homolog Detail RCSB PDB

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
AGS RCSB PDB P30750 523.2 Da LogP -1.51 TPSA 262.1 3 viol. ✓ Clean c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)…
ANP RCSB PDB P0A9V4 506.2 Da LogP -2.06 TPSA 281.9 3 viol. ✓ Clean c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)…
AOV RCSB PDB P0A9V1 544.2 Da LogP -3.05 TPSA 299.4 3 viol. ✓ Clean c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)…
CZJ RCSB PDB P0A9V1 586.6 Da LogP 3.32 TPSA 179.8 1 viol. ✓ Clean Cc1c(ccc2c1OC(=O)C(=C2O)NC(=O)C34CC5CC(C3)CC(C5…
DCQ RCSB PDB P0A9V4 322.4 Da LogP 4.49 TPSA 52.6 ✓ Ro5 Alert CCCCCCCCCCC1=C(C(=O)C(=C(C1=O)OC)OC)C
L0W RCSB PDB P0A9V4 1814.4 Da LogP 21.50 TPSA 394.5 4 viol. ✓ Clean CCCCCCCCCCCCCC(=O)O[C@H](CCCCCCCCCCC)CC(=O)O[C@…
LMD RCSB PDB P0A9V4 538.7 Da LogP 0.33 TPSA 178.5 3 viol. ✓ Clean CCCCCCCCCCCCCCO[C@H]1[C@@H]([C@H]([C@@H]([C@H](…
LMN RCSB PDB P0A9V4 1005.2 Da LogP -1.68 TPSA 357.1 3 viol. ✓ Clean CCCCCCCCCCC(CCCCCCCCCC)(CO[C@@H]1[C@@H]([C@@H](…
LMT RCSB PDB P0A9V4 510.6 Da LogP -0.45 TPSA 178.5 3 viol. ✓ Clean CCCCCCCCCCCCO[C@H]1[C@@H]([C@H]([C@@H]([C@H](O1…
MMC RCSB PDB Q58663 215.6 Da LogP 0.58 TPSA 0.0 ✓ Ro5 ✓ Clean C[Hg+]
NOV RCSB PDB A0A0H3CR83 612.6 Da LogP 3.63 TPSA 200.0 2 viol. ✓ Clean Cc1c(ccc2c1OC(=O)C(=C2O)NC(=O)c3ccc(c(c3)CC=C(C…
TBU RCSB PDB Q58663 74.1 Da LogP 0.78 TPSA 20.2 ✓ Ro5 ✓ Clean CC(C)(C)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.

Cross-references

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