KpATCC43816 Protein target profile

branched-chain amino acid transport system / permease component family protein

Accession: VK055_2685

Gene: AIK81279.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism Not in network UniProt A0A0H3GIJ9
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Length 318
Pocket druggability (P2Rank · AlphaFold DB model) 0.581
Functional annotation 0 EC 4 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.

Main supporting evidence

No similar human protein detected The current BLAST sequence screen did not find a significant human match, lowering apparent off-target risk. Second pocket predictor agrees P2Rank predicted binding-site probability 0.58. Structure available AlphaFold DB model + ColabFold model

Risks to review

Microbiome similarity 48 of 4744 screened genomes (1.0%) have a significant similarity hit. This target also has a predicted binding pocket (P2Rank 0.58) — check the ligand evidence before deprioritizing on off-target risk alone. Mixed conservation Core/accessory calls are not fully concordant. Best pocket may be a modeling artifact FPocket selected-pocket score 0.88, but this pocket's geometry is unusually large/diffuse compared to this protein's other predicted pockets — may reflect a low-confidence or disordered model region rather than a real cavity.

Evidence gaps

No ligand evidence No experimental PDB ligands, measured ChEMBL bioactivity, or proposed ZINC compound records are available.
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
No hit
Gut microbiome similarity
1.0% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Structure confidence

ColabFold pLDDT
90.01 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) 0.581
Structure A0A0H3GIJ9
Pocket Pocket 1
Druggability (FPocket) 0.882
Structure A0A0H3GIJ9
Pocket Pocket 15
ColabFold model
P2Rank 0.31 · Pocket 1
FPocket 0.813 · Pocket 24
Core conservation Accessory gene
Roary accessory
CoreCruncher accessory
Gut microbiome 48 / 4744 genomes with a hit
Prevalence 1.0%

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.

MKKSWRNNVEFYLIGLLLLMVIAFSIAMPNIFWSVSNFQSIASQMPVLGILALAMAMTMLCGGINLSIIATANACSLVMAWVATSYPPGGATALATLLAGGGAAMIIGLCNGILIAGIRVSPILATLGMMTLLKGINILITGGSAIANYPQWVLWLNHAQWFGIPLPMWLFAVVAAGLWVLLEKSPLGRAIMLIGSNERATHYSGINTRRVLMWVYVISALLCAVAAFLMMSKLNSAKASYGESYLLVSILAAVLGGVNPDGGSGRIVGMVLALFLLQIIESGFNILGISPYLTMALWGVLLLCFIQARGMLGLERAG

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

4 GO

Subcellular localization

Localization
CytoplasmicMembrane

Gene Ontology (GO)

4
  • 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.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

35 records
Show feature table
Start End DB Term Name
123 147 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
212 231 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
160 182 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
40 57 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
12 35 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
233 243 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
36 40 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
148 158 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
13 35 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
267 289 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
183 210 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
263 280 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
41 61 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
117 122 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
244 260 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
261 266 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
93 116 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
40 305 Pfam PF02653 Branched-chain amino acid transport system / permease component
40 305 InterPro IPR001851 ABC transporter, permease
88 92 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
241 258 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
315 318 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
284 306 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
68 87 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
211 232 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
295 314 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
290 294 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
94 116 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
62 67 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
3 307 PANTHER PTHR32196 ABC TRANSPORTER PERMEASE PROTEIN YPHD-RELATED-RELATED
159 182 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
45 306 CDD cd06579 TM_PBP1_transp_AraH_like
62 84 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
123 145 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
1 11 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
0.581
Likely same site as FPocket 15 5.2 Å 19 shared residues 95% of smaller site
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Surrounding area
Pocket 2 P2Rank #2
0.417
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Surrounding area
Pocket 3 P2Rank #3
0.085
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Surrounding area
Pocket 4 P2Rank #4
0.075
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Surrounding area
Pocket 5 P2Rank #5
0.032
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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 #15
0.882 Unusual size
Likely same site as P2Rank 1 5.2 Å 19 shared residues 95% of smaller site
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Surrounding area
Pocket 2 FPocket #3
0.404
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Surrounding area
Pocket 3 FPocket #17
0.208
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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_A0A0H3GIJ9
AlphaFold DB — — full sequence — Viewing
ColabFold VK055_2685
ColabFold — — full sequence — Loaded

Cross-references

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

Sequence

UniProt A0A0H3GIJ9