KpATCC43816 Protein target profile

sugar (and other) transporter family protein

Accession: VK055_4779

Gene: AIK83307.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism Not in network UniProt A0A0H3GVV3
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Length 378
Pocket druggability (P2Rank · AlphaFold DB model) 0.914
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.

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. Core gene across strains Marked as conserved by both pan-genome tools: Roary and CoreCruncher. Second pocket predictor agrees P2Rank predicted binding-site probability 0.91. Structure available AlphaFold DB model + ColabFold model

Risks to review

Microbiome similarity 23 of 4744 screened genomes (0.5%) have a significant similarity hit. This target also has a predicted binding pocket (P2Rank 0.91) — check the ligand evidence before deprioritizing on off-target risk alone. Best pocket may be a modeling artifact FPocket selected-pocket score 0.94, 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
0.5% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Structure confidence

ColabFold pLDDT
87.47 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) 0.914
Structure A0A0H3GVV3
Pocket Pocket 1
Druggability (FPocket) 0.939
Structure A0A0H3GVV3
Pocket Pocket 20
ColabFold model
P2Rank 0.937 · Pocket 1
FPocket 0.897 · Pocket 22
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 23 / 4744 genomes with a hit
Prevalence 0.5%

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.

MRPLLTSIGPLLPDIRAASGMSYTLAALLTALPVIAMGVLALAAGWVDRYIGQKRSIALSLLIIAAGALLREIAPNSGLLLTSALAGGIGIGIIQAAIPAVIKHLFPRRTPLVMGLWSAALMGGGGLGAAFTPWLASHSAAWHDALAWWALPALLALLSWLAICRQLPRAPHQASASPRVAIIGQRRAWTLGLYFGLINAGYASLIAWLPPYYIQLGDSAQYSGSLLALLTVGQTAGALLLPALARQEDRRQLLLLALALQLIGFCGFIWLPEHFSALWAIACGVGLGGAFPLCLVLALDHAGQPAVAGRLVAFMQGIGFIIAGLSPWLSGLLRSLSGNYTLDWSWHAICVLLLMALTLRFIPAHYPAEWRQRASDLP

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.

49 records
Show feature table
Start End DB Term Name
188 210 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
344 363 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
277 299 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
1 369 PANTHER PTHR23523 -
364 378 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
146 167 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
27 47 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
103 113 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
1 17 Phobius SIGNAL_PEPTIDE Signal peptide region
186 369 Gene3D G3DSA:1.20.1250.20 MFS general substrate transporter like domains
186 369 InterPro IPR036259 MFS transporter superfamily
192 214 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
114 134 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
224 246 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
6 367 SUPERFAMILY SSF103473 MFS general substrate transporter
6 367 InterPro IPR036259 MFS transporter superfamily
18 26 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
135 145 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
4 185 Gene3D G3DSA:1.20.1250.20 MFS general substrate transporter like domains
4 185 InterPro IPR036259 MFS transporter superfamily
145 164 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
7 326 Pfam PF07690 Major Facilitator Superfamily
7 326 InterPro IPR011701 Major facilitator superfamily
1 3 Phobius SIGNAL_PEPTIDE_N_REGION N-terminal region of a signal peptide.
311 329 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
23 45 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
272 276 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
75 79 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
277 299 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
344 363 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
80 102 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
168 187 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
56 74 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
84 106 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
242 252 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
253 271 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
113 135 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
4 12 Phobius SIGNAL_PEPTIDE_H_REGION Hydrophobic region of a signal peptide.
57 74 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
211 221 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
330 343 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
253 272 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
311 329 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
300 310 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
222 241 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
1 366 ProSiteProfiles PS50850 Major facilitator superfamily (MFS) profile.
1 366 InterPro IPR020846 Major facilitator superfamily domain
13 17 Phobius SIGNAL_PEPTIDE_C_REGION C-terminal region of a signal peptide.
48 55 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
0.914
Likely same site as FPocket 20 4.1 Å 19 shared residues 68% of smaller site
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Surrounding area
Pocket 2 P2Rank #2
0.266
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Surrounding area
Pocket 3 P2Rank #3
0.175
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Surrounding area
Pocket 4 P2Rank #4
0.035
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Surrounding area
Pocket 5 P2Rank #5
0.035
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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 #20
0.939 Unusual size
Likely same site as P2Rank 1 4.1 Å 19 shared residues 68% of smaller site
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Surrounding area
Pocket 2 FPocket #4
0.736
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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_A0A0H3GVV3
AlphaFold DB — — full sequence — Viewing
ColabFold VK055_4779
ColabFold — — full sequence — Loaded

Cross-references

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

Sequence

UniProt A0A0H3GVV3