KpATCC43816 Protein target profile

transporter associated domain protein

Accession: VK055_2850

Gene: AIK81439.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism Not in network UniProt A0A0H3GQQ5
Length 445
Pocket druggability (P2Rank · AlphaFold DB model) 0.238
Direct ligand evidence 0 52 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
No hit
Gut microbiome similarity
4.3% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Structure confidence

ColabFold pLDDT
87.24 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) 0.238
Structure A0A0H3GQQ5
Pocket Pocket 1
Druggability (FPocket) 0.766
Structure A0A0H3GQQ5
Pocket Pocket 1
ColabFold model
P2Rank 0.35 · Pocket 1
FPocket 0.394 · Pocket 32
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 206 / 4744 genomes with a hit
Prevalence 4.3%

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.

MLNSILVILCLIAVSAFFSISEISLAASRKIKLKLLADEGNVNAQRVLKMQENPGTFFTVVQIGLNAVAILGGIVGDAAFSPAFHSLLSGYLSPELSEQLSFIISFTLVTSLFILFADLTPKRIGMIAPETVALRIINPMRFCLLVFRPLVWLFNGMANMIFRIFKLPMVRKDDITSDDIYAVVEAGALAGVLRKQEHELIENVFELESRTVPSSMTPRESVIWFDLHEDEQSLKNKVAEHPHSKFLVCNEDIDHIIGYVDSKDLLNRVLANQSLVLTGGVQIRNTLIVPDTLTLSEALESFKTAGEDFAVIMNEYALVVGIITLNDVMTTLMGDLVGQGLEEQIVARDENSWLIDGGTPIDDVMRVLDIDEFPQSGNYETIGGFMMFMLRKIPKRTDAVKFSGYKFEVVDIDNYRIDQLLVTRIDNKPTVLVPKQAETAESQNA

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

2 GO

Subcellular localization

Localization
CytoplasmicMembrane

Gene Ontology (GO)

2
  • GO:0050660 Binding to FAD, flavin-adenine dinucleotide, the coenzyme or the prosthetic group of various flavoprotein oxidoreductase enzymes, in either the oxidized form, FAD, or the reduced form, FADH2.
  • 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.

42 records
Show feature table
Start End DB Term Name
163 445 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
4 435 PANTHER PTHR22777 HEMOLYSIN-RELATED
1 26 SignalP_GRAM_POSITIVE SignalP-TM SignalP-TM
122 141 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
5 27 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
344 428 SUPERFAMILY SSF56176 FAD-binding/transporter-associated domain-like
344 428 InterPro IPR036318 FAD-binding, type PCMH-like superfamily
347 427 Gene3D G3DSA:3.30.465.10 -
347 427 InterPro IPR016169 FAD-binding, type PCMH, subdomain 2
100 121 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
58 80 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
7 197 Pfam PF01595 Cyclin M transmembrane N-terminal domain
7 197 InterPro IPR002550 CNNM, transmembrane domain
211 329 CDD cd04590 CBS_pair_CorC_HlyC_assoc
211 329 InterPro IPR044751 Ion transporter-like, CBS domain
200 335 SUPERFAMILY SSF54631 CBS-domain pair
200 335 InterPro IPR046342 CBS domain superfamily
6 27 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
100 117 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
346 426 SMART SM01091 CorC_HlyC_2
346 426 InterPro IPR005170 Transporter-associated domain
28 55 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
81 99 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
142 162 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
282 343 ProSiteProfiles PS51371 CBS domain profile.
282 343 InterPro IPR000644 CBS domain
347 425 Pfam PF03471 Transporter associated domain
347 425 InterPro IPR005170 Transporter-associated domain
284 333 Pfam PF00571 CBS domain
284 333 InterPro IPR000644 CBS domain
216 275 ProSiteProfiles PS51371 CBS domain profile.
216 275 InterPro IPR000644 CBS domain
1 5 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
56 80 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
1 197 ProSiteProfiles PS51846 CNNM transmembrane domain profile.
1 197 InterPro IPR002550 CNNM, transmembrane domain
347 427 FunFam G3DSA:3.30.465.10:FF:000002 HlyC/CorC family transporter
1 16 SignalP_EUK SignalP-TM SignalP-TM
193 346 FunFam G3DSA:3.10.580.10:FF:000005 HlyC/CorC family transporter
144 162 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
193 346 Gene3D G3DSA:3.10.580.10 -
193 346 InterPro IPR046342 CBS domain superfamily

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
0.238
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Surrounding area
Pocket 2 P2Rank #2
0.21
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Surrounding area
Pocket 3 P2Rank #3
0.168
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Surrounding area
Pocket 4 P2Rank #4
0.109
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Surrounding area
Pocket 5 P2Rank #5
0.03
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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 #1
0.766
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_A0A0H3GQQ5
AlphaFold DB full sequence Viewing
ColabFold VK055_2850
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.

52 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 2 records from similar proteins
Structural ligands 2 0 loaded crystals
Measured bioactivity 0 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
FX6 PDB via homolog 253.3 Da · LogP 0.89 · TPSA 117.8 Open detail RCSB PDB
OLC PDB via homolog Detail RCSB PDB
ZINC1501016272 ZINC proposed compound · Tanimoto 1.000 Detail ZINC
ZINC1501016273 ZINC proposed compound · Tanimoto 1.000 Detail ZINC
ZINC1501016315 ZINC proposed compound · Tanimoto 1.000 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
FX6 RCSB PDB A0A109QFA5 253.3 Da LogP 0.89 TPSA 117.8 ✓ Ro5 ✓ Clean CC[C@@H](C(=O)O)Sc1[nH]c2c(n1)c(ncn2)N
OLC RCSB PDB A0A109QFA5 356.5 Da LogP 4.92 TPSA 66.8 ✓ Ro5 ✓ Clean CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](CO)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.