KpATCC43816 Protein target profile

ABC transporter family protein

Accession: VK055_2141

Gene: AIK80746.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism Not in network UniProt A0A0H3GNL4
Length 590
Pocket druggability (P2Rank · AlphaFold DB model) 0.234
Direct ligand evidence 0 53 total records
Functional annotation 1 EC 8 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 (%)
50.0 Lower values reduce human off-target concern.
Human E-value
8.14e-15
Gut microbiome similarity
2.4% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Structure confidence

ColabFold pLDDT
92.95 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) 0.234
Structure A0A0H3GNL4
Pocket Pocket 1
Druggability (FPocket) 0.75
Structure A0A0H3GNL4
Pocket Pocket 3
ColabFold model
P2Rank 0.212 · Pocket 1
FPocket 0.452 · Pocket 48
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 116 / 4744 genomes with a hit
Prevalence 2.4%

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.

MRLFAQLSWYFRREWRRYLGAIALLVIIAVLQLIPPKVVGIVVDGVTQQHYTAEKVWMWIGALVLIAVMVYLLRYVWRVLLFGASYQLAVELREDFYRQLSRQHPAFYLRHRTGDLIARATNDVDRVVFAAGEGVLTLVDSLVMGCAVLIVMSTQISWQLTLLALLPMPLMALAIKRNGDALHERFRVAQAAFSSLNDRTQESLTSIRMIKAFGLEDRQSAQFAADAADTGAKNMRVARIDARFDPTIYIAIGAANLLAIGGGSWMVIHGSLTLGQLTSFVMYLGLMIWPMLALAWMFNIVERGSAAYGRIRTMLEEAPAVDDGTEALPAGRGVLQVAIRDFIYPQASKPSLEQVNFTLQPGQMLGICGPTGAGKSTILALLQRHFDVTHGEIRFHDLPLPILQLDSWRARLAVVNQTPFLFSDTVANNIALGKPDATQAQIERVAQLASVHDDILRLPQGYETEVGERGVMLSGGQKQRISIARALLLEAEILILDDALSAVDGRTEHQILHNLRQWGEGRTVIISAHRLSALTEASEILVLQHGHIAQRGRHEALAVQPGWYRDMYRYQQLEAALDEVPQTQEEALDA

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 8 GO

Subcellular localization

Localization
CytoplasmicMembrane

Enzyme Commission (EC)

1

Gene Ontology (GO)

8
  • GO:0005524 Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
  • 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:0140359 Primary active transporter characterized by two nucleotide-binding domains and two transmembrane domains. Uses the energy generated from ATP hydrolysis to drive the transport of a substance across a membrane.
  • 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:0015421 Catalysis of the reaction: ATP + H2O + oligopeptide(out) = ADP + phosphate + oligopeptide(in).
  • GO:0008559 Catalysis of the reaction: ATP + H2O + xenobiotic(in) = ADP + phosphate + xenobiotic(out).

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

46 records
Show feature table
Start End DB Term Name
21 291 Pfam PF00664 ABC transporter transmembrane region
21 291 InterPro IPR011527 ABC transporter type 1, transmembrane domain
1 323 FunFam G3DSA:1.20.1560.10:FF:000011 Multidrug ABC transporter ATP-binding protein
176 247 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
352 500 Pfam PF00005 ABC transporter
352 500 InterPro IPR003439 ABC transporter-like, ATP-binding domain
19 31 Phobius SIGNAL_PEPTIDE_H_REGION Hydrophobic region of a signal peptide.
151 155 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
56 77 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
156 175 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
21 43 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
18 311 CDD cd18541 ABC_6TM_TmrB_like
473 487 ProSitePatterns PS00211 ABC transporters family signature.
473 487 InterPro IPR017871 ABC transporter-like, conserved site
337 570 ProSiteProfiles PS50893 ATP-binding cassette, ABC transporter-type domain profile.
337 570 InterPro IPR003439 ABC transporter-like, ATP-binding domain
5 574 PANTHER PTHR43394 ATP-DEPENDENT PERMEASE MDL1, MITOCHONDRIAL
5 574 InterPro IPR039421 Type 1 protein exporter
1 18 Phobius SIGNAL_PEPTIDE_N_REGION N-terminal region of a signal peptide.
361 547 SMART SM00382 AAA_5
361 547 InterPro IPR003593 AAA+ ATPase domain
78 126 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
7 322 SUPERFAMILY SSF90123 ABC transporter transmembrane region
7 322 InterPro IPR036640 ABC transporter type 1, transmembrane domain superfamily
1 40 Phobius SIGNAL_PEPTIDE Signal peptide region
269 279 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
156 175 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
19 303 ProSiteProfiles PS50929 ABC transporter integral membrane type-1 fused domain profile.
19 303 InterPro IPR011527 ABC transporter type 1, transmembrane domain
302 590 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
129 151 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
331 572 SUPERFAMILY SSF52540 P-loop containing nucleoside triphosphate hydrolases
331 572 InterPro IPR027417 P-loop containing nucleoside triphosphate hydrolase
332 583 Gene3D G3DSA:3.40.50.300 -
332 583 InterPro IPR027417 P-loop containing nucleoside triphosphate hydrolase
12 325 Gene3D G3DSA:1.20.1560.10 ABC transporter type 1, transmembrane domain
12 325 InterPro IPR036640 ABC transporter type 1, transmembrane domain superfamily
41 55 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
32 40 Phobius SIGNAL_PEPTIDE_C_REGION C-terminal region of a signal peptide.
127 150 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
326 578 FunFam G3DSA:3.40.50.300:FF:000221 Multidrug ABC transporter ATP-binding protein
248 268 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
278 300 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
58 77 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
280 301 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
246 268 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.

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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
0.234
Likely same site as FPocket 13 1.5 Å 12 shared residues 92% of smaller site
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Surrounding area
Pocket 2 P2Rank #2
0.185
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Surrounding area
Pocket 3 P2Rank #3
0.124
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Surrounding area
Pocket 4 P2Rank #4
0.069
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Surrounding area
Pocket 5 P2Rank #5
0.029
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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 #3
0.75
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Surrounding area
Pocket 2 FPocket #1
0.532
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Surrounding area
Pocket 3 FPocket #14
0.474
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Surrounding area
Pocket 4 FPocket #13
0.271
Likely same site as P2Rank 1 1.5 Å 12 shared residues 92% of smaller site
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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_A0A0H3GNL4
AlphaFold DB full sequence Viewing
ColabFold VK055_2141
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.

53 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 3 records from similar proteins
Structural ligands 3 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
ZINC12360002 ZINC proposed compound · Tanimoto 0.855 Detail ZINC
ZINC12360703 ZINC proposed compound · Tanimoto 0.855 Detail ZINC

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 Q9WYC3 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 P63359 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 Q72J04 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)…

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.