KpATCC43816 Protein target profile

sucrose-6-phosphate hydrolase

Accession: VK055_2036

Gene: scrB AIK80642.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism 8 reactions UniProt A0A0H3GPF2
Length 466
Pocket druggability (P2Rank · AlphaFold DB model) 0.778
Metabolic reactions 8
Chokepoint Yes
Direct ligand evidence 0 52 total records
Functional annotation 0 EC 4 GO
Target summary

Strong target candidate with converging metabolic, structural and chemical evidence.

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
1.3% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Structure confidence

ColabFold pLDDT
95.97 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) 0.778
Structure A0A0H3GPF2
Pocket Pocket 1
Druggability (FPocket) 0.881
Structure A0A0H3GPF2
Pocket Pocket 23
ColabFold model
P2Rank 0.755 · Pocket 1
FPocket 0.432 · Pocket 4
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 64 / 4744 genomes with a hit
Prevalence 1.3%

Metabolic context

Reactions catalyzed, pathway membership, and centrality in the genome-scale metabolic network.

Explore metabolic network

Attractive metabolic target: catalyzes a consuming chokepoint reaction, more central than 88.8% of genes in this genome, no human homolog detected.

Relative network centrality 88.8% more central than 88.8% of genes in this genome
Chokepoint Chokepoint gene
Pathways

No specific KEGG pathway assigned - this reaction either has no KEGG mapping, or only matches a generic overview map with no route-level information.

Catalyzed reactions

8 reactions mapped to this gene in the metabolic model. Open the full network to see each one, with substrates/products and the reaction-reaction map.

Imported from KpATCC43816.sbml · 2026-07-09

Sequence

Primary amino-acid sequence viewer.

MSLPSRLPAILQAVMQGQPQALADSHYPQWHLAPVNGLLNDPNGFCQVAGRYHLFYQWNPLACDHTYKCWGHWSSADLLHWRHEPIALMPDEEYDRNGCYSGSAVEFEGALTLCYTGNVKFPDGGRTAWQCLATENADGTFRKLGPVLPLPEGYTGHVRDPKVWRQDGRWYMVLGAQDVQQRGKVLLFTASDLREWRLVGEIAGHDVNGLANAGYMWECPDLFPLADTHLLICCPQGLAREAQRFLNTYPAVWMAGRFDAERGIFDHGPLHELDSGFEFYAPQTMQADDGRRLLVGWMGVPDGDEMHQPTRAQGWIHQMTCVRELEWQAGTLYQRPLRELVALRGEAQGWRGQTLPLAPMELAFDLSPDSTLGLDFAGALQLTVNRDGLRLSRRGLQTAEMHHRYWRGEARRLRIFIDRSSVEIFINDGEGVISSRFFPGYPGQLIFSGATPVAFCRWLLRPCMVE

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

4 GO

Subcellular localization

Localization
Cytoplasmic

Gene Ontology (GO)

4
  • GO:0004564 Catalysis of the reaction: a fructofuranosylated fructofuranosyl acceptor + H2O = a non fructofuranosylated fructofuranosyl acceptor + a beta-D-fructofuranoside.
  • GO:0004553 Catalysis of the hydrolysis of any O-glycosyl bond.
  • 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:0005737 The contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

24 records
Show feature table
Start End DB Term Name
7 15 Phobius SIGNAL_PEPTIDE_H_REGION Hydrophobic region of a signal peptide.
1 23 Phobius SIGNAL_PEPTIDE Signal peptide region
361 454 Gene3D G3DSA:2.60.120.560 -
15 439 NCBIfam TIGR01322 sucrose-6-phosphate hydrolase
15 439 InterPro IPR006232 Sucrose-6-phosphate hydrolase
338 464 SUPERFAMILY SSF49899 Concanavalin A-like lectins/glucanases
338 464 InterPro IPR013320 Concanavalin A-like lectin/glucanase domain superfamily
37 328 CDD cd18623 GH32_ScrB-like
16 23 Phobius SIGNAL_PEPTIDE_C_REGION C-terminal region of a signal peptide.
31 336 Pfam PF00251 Glycosyl hydrolases family 32 N-terminal domain
31 336 InterPro IPR013148 Glycosyl hydrolase family 32, N-terminal
31 429 SMART SM00640 glyco_32
31 429 InterPro IPR001362 Glycoside hydrolase, family 32
24 466 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
18 443 PANTHER PTHR43101 BETA-FRUCTOSIDASE
8 351 Gene3D G3DSA:2.115.10.20 Glycosyl hydrolase domain; family 43
8 351 InterPro IPR023296 Glycosyl hydrolase, five-bladed beta-propellor domain superfamily
1 6 Phobius SIGNAL_PEPTIDE_N_REGION N-terminal region of a signal peptide.
400 441 Pfam PF08244 Glycosyl hydrolases family 32 C terminal
400 441 InterPro IPR013189 Glycosyl hydrolase family 32, C-terminal
22 336 SUPERFAMILY SSF75005 Arabinanase/levansucrase/invertase
22 336 InterPro IPR023296 Glycosyl hydrolase, five-bladed beta-propellor domain superfamily
31 44 ProSitePatterns PS00609 Glycosyl hydrolases family 32 active site.
31 44 InterPro IPR018053 Glycoside hydrolase, family 32, active site

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
0.778
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Surrounding area
Pocket 2 P2Rank #2
0.523
Likely same site as FPocket 23 7.2 Å 8 shared residues 89% of smaller site
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Surrounding area
Pocket 3 P2Rank #3
0.244
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Surrounding area
Pocket 4 P2Rank #4
0.178
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Surrounding area
Pocket 5 P2Rank #5
0.172
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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 #23
0.881
Likely same site as P2Rank 2 7.2 Å 8 shared residues 89% of smaller site
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_A0A0H3GPF2
AlphaFold DB full sequence Viewing
ColabFold VK055_2036
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
DQQ PDB via homolog 163.2 Da · LogP -2.97 · TPSA 93.0 Open detail RCSB PDB
FRU PDB via homolog Detail RCSB PDB
ZINC13551953 ZINC proposed compound · Tanimoto 0.875 Detail ZINC
ZINC13761953 ZINC proposed compound · Tanimoto 0.875 Detail ZINC
ZINC4095790 ZINC proposed compound · Tanimoto 0.875 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
DQQ RCSB PDB Q93X60 163.2 Da LogP -2.97 TPSA 93.0 ✓ Ro5 ✓ Clean C([C@@H]1[C@H]([C@@H]([C@H](N1)CO)O)O)O
FRU RCSB PDB Q43866 180.2 Da LogP -3.22 TPSA 110.4 ✓ Ro5 ✓ Clean C([C@@H]1[C@H]([C@@H]([C@](O1)(CO)O)O)O)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.