KpATCC43816 Protein target profile

bacterially-derived sulfatase

Accession: VK055_4971

Gene: AIK83497.1 bds 3D evidence: AlphaFold DB model + ColabFold model Metabolism Not in network UniProt A0AAX1BS17
Length 658
Pocket druggability (P2Rank · AlphaFold DB model) 0.934
Direct ligand evidence 0 52 total records
Functional annotation 1 EC 4 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
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
93.52 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) 0.934
Structure A0AAX1BS17
Pocket Pocket 1
Druggability (FPocket) 0.93
Structure A0AAX1BS17
Pocket Pocket 40
ColabFold model
P2Rank 0.925 · Pocket 1
FPocket 0.584 · Pocket 22
Core conservation Accessory gene
Roary accessory
CoreCruncher accessory
Gut microbiome 41 / 4744 genomes with a hit
Prevalence 0.9%

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.

MKLNQIAKNLTLAGMLSSLSITAFAAAQQHDATPATREANQALYHKLPFADKTDFYNAHQGFIAPLPPAMLKGAQGNIIWDPAKYDFVKEGEKAPDTVNPSLWRQSQLLNIGGLFKVTDGVYQIRNLDLSNMTIIEGKTGITVIDPLLSAEPAKEALALYFAHRPKKPVVAVLFTHSHVDHYGGIRGVVDEADVKAGKVKIYAPAGFMEEAVSENIMAGTAMSRRASYMYGNLLKPNAKGQVGAGLGTTTSAGTVTLIPPTNYITHTGQQEVIDGLTYDFMMAPGSEAPSEMLWYIKEKKMIEAAEDVTHTLHNTYSLRGAKIRDPLAWSKYINAAIDRWGSDAEVIIAQHHWPTWGNDNIVKLMKGQRDMYRYINDQTLRMANLGMTRDEIAANFKLPDSLEKQWSSRGYYGSVSHDVKATYVFYLGWFDGNPATLDELPPEQTAKKFVEYMGGADAILQKAKADYQQGNYRWVAQVTSKIVFADPNNQQARHLEADALEQLGYQAEAGTWRNFYLTGAQELRNGVQKLPTPNTASPDTVRAMTPEMFFDYLGVHLNGEKAGAAKAVFNIDLGKDGGKYKLELENGVLNHTANAVADNADASISLSRDPLNKIILKQETLKQAEAQDMVKISGNGAKLDEMLSYMDTFAFWFNIVTP

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 4 GO

Subcellular localization

Localization
Unknown

Enzyme Commission (EC)

1

Gene Ontology (GO)

4
  • GO:0018909 The chemical reactions and pathways involving dodecyl sulfate, commonly found as sodium dodecyl sulfate (SDS), a component of a variety of synthetic surfactants.
  • GO:0046983 The formation of a protein dimer, a macromolecular structure consists of two noncovalently associated identical or nonidentical subunits.
  • GO:0018741 Catalysis of the reaction: a primary linear alkyl sulfate ester + H2O = a primary alcohol + H+ + sulfate.
  • GO:0046872 Binding to a metal ion.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

30 records
Show feature table
Start End DB Term Name
1 25 Phobius SIGNAL_PEPTIDE Signal peptide region
22 25 Phobius SIGNAL_PEPTIDE_C_REGION C-terminal region of a signal peptide.
26 386 Gene3D G3DSA:3.60.15.30 -
1 27 SignalP_EUK SignalP-noTM SignalP-noTM
388 526 Pfam PF14863 Alkyl sulfatase dimerisation
388 526 InterPro IPR029228 Alkyl sulfatase dimerisation domain
387 527 FunFam G3DSA:1.25.40.880:FF:000001 SDS hydrolase SdsA1
113 357 CDD cd07710 arylsulfatase_Sdsa1-like_MBL-fold
113 357 InterPro IPR044097 Alkyl/aryl-sulfatase Bds1/ SdsA1 , MBL-fold
29 658 PANTHER PTHR43223 ALKYL/ARYL-SULFATASE
1 25 SignalP_GRAM_POSITIVE SignalP-TM SignalP-TM
1 9 Phobius SIGNAL_PEPTIDE_N_REGION N-terminal region of a signal peptide.
528 658 Gene3D G3DSA:3.30.1050.10 -
528 658 InterPro IPR036527 SCP2 sterol-binding domain superfamily
129 351 SMART SM00849 Lactamase_B_5a
129 351 InterPro IPR001279 Metallo-beta-lactamase
126 351 Pfam PF00753 Metallo-beta-lactamase superfamily
126 351 InterPro IPR001279 Metallo-beta-lactamase
536 658 SUPERFAMILY SSF55718 SCP-like
536 658 InterPro IPR036527 SCP2 sterol-binding domain superfamily
387 527 Gene3D G3DSA:1.25.40.880 Alkyl sulfatase, dimerisation domain
387 527 InterPro IPR038536 Alkyl/aryl-sulfatase, dimerisation domain superfamily
28 386 FunFam G3DSA:3.60.15.30:FF:000001 Alkyl/aryl-sulfatase BDS1
28 530 SUPERFAMILY SSF56281 Metallo-hydrolase/oxidoreductase
28 530 InterPro IPR036866 Ribonuclease Z/Hydroxyacylglutathione hydrolase-like
534 658 Pfam PF14864 Alkyl sulfatase C-terminal
534 658 InterPro IPR029229 Alkyl sulfatase, C-terminal
1 25 SignalP_GRAM_NEGATIVE SignalP-noTM SignalP-noTM
10 21 Phobius SIGNAL_PEPTIDE_H_REGION Hydrophobic region of a signal peptide.
26 658 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.

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
0.934
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Surrounding area
Pocket 2 P2Rank #2
0.887
Likely same site as FPocket 2 3.7 Å 16 shared residues 94% of smaller site
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Surrounding area
Pocket 3 P2Rank #3
0.434
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Surrounding area
Pocket 4 P2Rank #4
0.427
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Surrounding area
Pocket 5 P2Rank #5
0.387
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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 #40
0.93 Unusual size
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Surrounding area
Pocket 2 FPocket #2
0.711
Likely same site as P2Rank 2 3.7 Å 16 shared residues 94% of smaller site
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Surrounding area
Pocket 3 FPocket #28
0.243
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Surrounding area
Pocket 4 FPocket #36
0.214
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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_A0AAX1BS17
AlphaFold DB full sequence Viewing
ColabFold VK055_4971
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
1DB PDB via homolog 222.3 Da · LogP 3.01 · TPSA 54.4 Open detail RCSB PDB
1DO PDB via homolog Detail RCSB PDB
ZINC100019805 ZINC proposed compound · Tanimoto 1.000 Detail ZINC
ZINC1625794 ZINC proposed compound · Tanimoto 1.000 Detail ZINC
ZINC1644076 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
1DB RCSB PDB Q9I5I9 222.3 Da LogP 3.01 TPSA 54.4 ✓ Ro5 ✓ Clean CCCCCCCCCCS(=O)(=O)O
1DO RCSB PDB Q9I5I9 186.3 Da LogP 3.90 TPSA 20.2 ✓ Ro5 ✓ Clean CCCCCCCCCCCCO

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.