KpATCC43816 Protein target profile
beta-galactosidase trimerization domain protein
Accession: VK055_2852
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
Risks to review
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
- 0.9% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.
Essentiality
- Essential (DEG)
- N
- DEG identity (%)
- 0.0 Higher values support similarity to known essential genes.
Structure confidence
- ColabFold pLDDT
- 97.7 0-100 confidence; >70 supports local structural interpretation.
Binding-site evidence
AlphaFold DB / UniProt modelP2Rank'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.
Sequence
Primary amino-acid sequence viewer.
MSHLFYGVAYYDEYMPEDRLAKDIALMRETGINVVRIAESTWSTLEPEEGQYNFYHIDRVLEAMHEAGIAVIVGTPTYAVPAWLAAKHPDILVTTVAGQQKYGPRQIMDIVNPTFRRYAEKIIRTLMAHVQHHPAIIGWQLDNETKHYDNIGRYMQEGFVRSLQEKYPDLRQLNHDFGLDYWSNRIDRWQDFPPVENTINASLACAFSRYQRQQVTEYLAWQAAIVREYAQPHQFVTHNFDFEWRGYSYGVQPRVDHFAAAQALDIAGVDIYHPSQAHLTGREIAFGGAITRSLKPGQNYFVLETQAQGFAQWTPFPGQLRLQAFSHIASGAAMVSYWHWHSIHNAFETYWKGLLSHDFSRNPTWQEATTIGADFARLSPQLAELKAENDVALLISNEAMDALNHFLPGDARGNIYNDIFRRFHDALYDHNISLDIIHDVNEETSRYRVLIVPGLYAADEGLLTRINDYIARGGRALIGFKSGFSDENVKVRSSAQPGVLRQSCGVSYSQFTLPEETTVSSCCAEIDCRNDNQAELWMELLTPDDGTRTLLRYQHPAWGEYAAATEADYGQGRALYVGFLPQKGLISQLFDVLTADLTLNSRTSAYRYPLVVKKMRNRAGNNIHFLFNYSGEAMDVVSETLGTALLSGETVYVGQPLRLRAWEFTIIES
Functional annotations
Enzyme classification and Gene Ontology terms linked to this protein.
Subcellular localization
- Localization
- Cytoplasmic
Enzyme Commission (EC)
1Gene Ontology (GO)
4- GO:0009341 A protein complex that possesses beta-galactosidase activity, i.e. catalyzes the hydrolysis of terminal non-reducing beta-D-galactose residues in beta-D-galactosides. In E. coli, the complex is a homotetramer; dimeric and hexameric beta-galactosidase complexes have been observed in other species.
- GO:0005975 The chemical reactions and pathways involving carbohydrates, any of a group of organic compounds based of the general formula Cx(H2O)y.
- GO:0004565 Catalysis of the hydrolysis of terminal, non-reducing beta-D-galactose residues in beta-D-galactosides.
- GO:0046872 Binding to a metal ion.
Sequence domains and features
Domain and signature matches imported from InterPro and related databases.
Show feature table
| Start | End | DB | Term | Name |
|---|---|---|---|---|
| 388 | 598 | SUPERFAMILY | SSF52317 | Class I glutamine amidotransferase-like |
| 388 | 598 | InterPro | IPR029062 | Class I glutamine amidotransferase-like |
| 1 | 669 | PIRSF | PIRSF001084 | B-galactosidase |
| 1 | 669 | InterPro | IPR003476 | Glycoside hydrolase, family 42 |
| 10 | 376 | Pfam | PF02449 | Beta-galactosidase |
| 10 | 376 | InterPro | IPR013529 | Glycoside hydrolase, family 42, N-terminal |
| 390 | 598 | Pfam | PF08532 | Beta-galactosidase trimerisation domain |
| 390 | 598 | InterPro | IPR013738 | Beta-galactosidase trimerisation |
| 1 | 382 | Gene3D | G3DSA:3.20.20.80 | Glycosidases |
| 3 | 650 | PANTHER | PTHR36447 | BETA-GALACTOSIDASE GANA |
| 3 | 650 | InterPro | IPR003476 | Glycoside hydrolase, family 42 |
| 5 | 379 | SUPERFAMILY | SSF51445 | (Trans)glycosidases |
| 5 | 379 | InterPro | IPR017853 | Glycoside hydrolase superfamily |
| 386 | 602 | Gene3D | G3DSA:3.40.50.880 | - |
| 386 | 602 | InterPro | IPR029062 | Class I glutamine amidotransferase-like |
| 391 | 502 | CDD | cd03143 | A4_beta-galactosidase_middle_domain |
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.
How colors and pocket overlays are used
Pocket details Inspect a specific pocket, or open the full viewer
- Method
- -
- Score
- -
- Visible layer
- -
- Residues
- -
- Pocket properties
- -
Selecting a pocket opens its details and centers the viewer without clearing other active layers. Use Focus this pocket when you want to hide the rest; use Surface for the wider residue environment.
Binding pockets · P2Rank
Druggability (P2Rank): high ≥ 0.5 · medium 0.2–0.49 · low < 0.2
Binding pockets · FPocket
Druggability (FPocket): high ≥ 0.7 · medium 0.4–0.69 · low < 0.4
Binding pockets · P2Rank
Druggability (P2Rank): high ≥ 0.5 · medium 0.2–0.49 · low < 0.2
Binding pockets · FPocket
Druggability (FPocket): high ≥ 0.7 · medium 0.4–0.69 · low < 0.4
All structural evidence
Structural evidence
0 + 2Experimental 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_A0A0C7KLH4
|
AlphaFold DB | — | — | full sequence | — | Viewing |
|
ColabFold
VK055_2852
|
ColabFold | — | — | full sequence | — | Loaded |
Cross-references
External database identifiers for this protein, its structures, ligands, and metabolic reactions.