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.
Main supporting evidence
Evidence coverage
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 (%)
- 0.0 Higher values support similarity to known essential genes.
Structure confidence
- ColabFold pLDDT
- 94.14 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.
MFRKDFAAIALVLTATQAGAEPLTATRYADFDRYVLALSWQTGFCQSMYDRNRNEPEECRLQQDTANKADFLTVHGLWPGLPKSIAARGVDERRWMRYGCATRPVPNMPEVKANRKCQAAETGLSLEMANKLNNVMPGSGGTSCLERYEYAKHGVCFGFDPDSYFGAMVRLNGEIKRSPVGDFLAKHYGQTVSRADFDAAVARAWGPQSVKAFKLTCNGNPAYLTEMQISLNAATINAPLATSAFLPQPHPGNCGAQFILDKVGH
Functional annotations
Enzyme classification and Gene Ontology terms linked to this protein.
Subcellular localization
- Localization
- Periplasmic
Gene Ontology (GO)
3- GO:0033897 Catalysis of the reaction: a ribonucleotidyl-ribonucleotide-RNA + H2O = a 3'-end 3'-phospho-ribonucleotide-RNA + a 5'-end dephospho-ribonucleoside-RNA + H+. This reaction is a two-stage endonucleolytic cleavage to nucleoside 3'-phosphates and 3'-phosphooligonucleotides with 2',3'-cyclic phosphate intermediates.
- GO:0003723 Binding to an RNA molecule or a portion thereof.
- GO:0006401 The chemical reactions and pathways resulting in the breakdown of RNA, ribonucleic acid, one of the two main type of nucleic acid, consisting of a long, unbranched macromolecule formed from ribonucleotides joined in 3',5'-phosphodiester linkage.
Sequence domains and features
Domain and signature matches imported from InterPro and related databases.
Show feature table
| Start | End | DB | Term | Name |
|---|---|---|---|---|
| 1 | 20 | SignalP_GRAM_NEGATIVE | SignalP-noTM | SignalP-noTM |
| 1 | 20 | Phobius | SIGNAL_PEPTIDE | Signal peptide region |
| 21 | 265 | Phobius | NON_CYTOPLASMIC_DOMAIN | Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region. |
| 1 | 5 | Phobius | SIGNAL_PEPTIDE_N_REGION | N-terminal region of a signal peptide. |
| 72 | 79 | ProSitePatterns | PS00530 | Ribonuclease T2 family histidine active site 1. |
| 72 | 79 | InterPro | IPR018188 | Ribonuclease T2, His active site 1 |
| 16 | 20 | Phobius | SIGNAL_PEPTIDE_C_REGION | C-terminal region of a signal peptide. |
| 30 | 259 | SUPERFAMILY | SSF55895 | Ribonuclease Rh-like |
| 30 | 259 | InterPro | IPR036430 | Ribonuclease T2-like superfamily |
| 6 | 15 | Phobius | SIGNAL_PEPTIDE_H_REGION | Hydrophobic region of a signal peptide. |
| 31 | 231 | Pfam | PF00445 | Ribonuclease T2 family |
| 31 | 231 | InterPro | IPR001568 | Ribonuclease T2-like |
| 19 | 234 | PANTHER | PTHR11240 | RIBONUCLEASE T2 |
| 19 | 234 | InterPro | IPR001568 | Ribonuclease T2-like |
| 1 | 20 | SignalP_GRAM_POSITIVE | SignalP-TM | SignalP-TM |
| 145 | 156 | ProSitePatterns | PS00531 | Ribonuclease T2 family histidine active site 2. |
| 145 | 156 | InterPro | IPR033130 | Ribonuclease T2, His active site 2 |
| 23 | 265 | Gene3D | G3DSA:3.90.730.10 | - |
| 23 | 265 | InterPro | IPR036430 | Ribonuclease T2-like 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.
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_A0A0H3GJX4
|
AlphaFold DB | — | — | full sequence | — | Viewing |
|
ColabFold
VK055_1879
|
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.
Structural ligand evidence is available for this target.
Highest-confidence structural evidence: ligands co-crystallized with this exact protein. If the source PDB is loaded in Target, use Open crystal to inspect it in the structure viewer.
No PDB structure with a co-crystallized ligand found for this exact protein.
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.
Experimental bioactivity from ChEMBL measured directly on this protein. Score = pchembl (−log Ki/IC₅₀; higher = more potent).
No ChEMBL bioactivity data found for this exact protein.
Bioactivity inferred from similar proteins in ChEMBL. Score = pchembl (−log Ki/IC₅₀; higher = more potent).
No ChEMBL hits found through similar proteins.
Proposed virtual-screening candidates from ZINC. Score = Tanimoto similarity to a known binder (0–1; higher = more similar).
| Ligand | Tanimoto | MW · LogP · TPSA | Lipinski | PAINS | SMILES |
|---|---|---|---|---|---|
| ZINC12501360 ZINC | 0.794 | 363.2 Da LogP -2.57 TPSA 206.0 | 1 viol. | ✓ Clean |
Nc1nc2c(ncn2[C@@H]2O[C@H](CO)[C@@H](O)[C@@H]2OP…
|
| ZINC104869865 ZINC | 0.754 | 443.2 Da LogP -2.45 TPSA 252.6 | 2 viol. | ✓ Clean |
Nc1nc2c(ncn2[C@H]2O[C@H](CO[P@@](=O)(O)OP(=O)(O…
|
| ZINC12504289 ZINC | 0.754 | 443.2 Da LogP -2.45 TPSA 252.6 | 2 viol. | ✓ Clean |
Nc1nc2c(ncn2[C@@H]2O[C@H](CO[P@@](=O)(O)OP(=O)(…
|
| ZINC34541308 ZINC | 0.754 | 443.2 Da LogP -2.45 TPSA 252.6 | 2 viol. | ✓ Clean |
Nc1nc2c(ncn2[C@@H]2O[C@H](CO[P@@](=O)(O)OP(=O)(…
|
| ZINC35000839 ZINC | 0.754 | 443.2 Da LogP -2.45 TPSA 252.6 | 2 viol. | ✓ Clean |
Nc1nc2c(ncn2[C@H]2O[C@@H](CO[P@@](=O)(O)OP(=O)(…
|
| ZINC45284491 ZINC | 0.754 | 443.2 Da LogP -2.45 TPSA 252.6 | 2 viol. | ✓ Clean |
Nc1nc2c(ncn2[C@H]2O[C@@H](CO[P@@](=O)(O)OP(=O)(…
|
| ZINC80639694 ZINC | 0.754 | 443.2 Da LogP -2.45 TPSA 252.6 | 2 viol. | ✓ Clean |
Nc1nc2c(ncn2[C@@H]2O[C@H](CO[P@@](=O)(O)OP(=O)(…
|
| ZINC8215481 ZINC | 0.754 | 443.2 Da LogP -2.45 TPSA 252.6 | 2 viol. | ✓ Clean |
Nc1nc2c(ncn2[C@@H]2O[C@H](CO[P@@](=O)(O)OP(=O)(…
|
| ZINC12501413 ZINC | 0.746 | 363.2 Da LogP -2.57 TPSA 206.0 | 1 viol. | ✓ Clean |
Nc1nc2c(ncn2[C@@H]2O[C@H](COP(=O)(O)O)[C@@H](O)…
|
| ZINC12958448 ZINC | 0.746 | 363.2 Da LogP -2.57 TPSA 206.0 | 1 viol. | ✓ Clean |
Nc1nc2c(ncn2[C@@H]2O[C@H](COP(=O)(O)O)[C@H](O)[…
|
| ZINC1532555 ZINC | 0.746 | 363.2 Da LogP -2.57 TPSA 206.0 | 1 viol. | ✓ Clean |
Nc1nc2c(ncn2[C@H]2O[C@@H](COP(=O)(O)O)[C@H](O)[…
|
| ZINC16546189 ZINC | 0.746 | 363.2 Da LogP -2.57 TPSA 206.0 | 1 viol. | ✓ Clean |
Nc1nc2c(ncn2[C@@H]2O[C@H](COP(=O)(O)O)[C@H](O)[…
|
| ZINC2159505 ZINC | 0.746 | 363.2 Da LogP -2.57 TPSA 206.0 | 1 viol. | ✓ Clean |
Nc1nc2c(ncn2[C@@H]2O[C@H](COP(=O)(O)O)[C@@H](O)…
|
| ZINC3073318 ZINC | 0.746 | 363.2 Da LogP -2.57 TPSA 206.0 | 1 viol. | ✓ Clean |
Nc1nc2c(ncn2[C@H]2O[C@@H](COP(=O)(O)O)[C@@H](O)…
|
| ZINC3869963 ZINC | 0.746 | 363.2 Da LogP -2.57 TPSA 206.0 | 1 viol. | ✓ Clean |
Nc1nc2c(ncn2[C@H]2O[C@@H](COP(=O)(O)O)[C@@H](O)…
|
| ZINC3869965 ZINC | 0.746 | 363.2 Da LogP -2.57 TPSA 206.0 | 1 viol. | ✓ Clean |
Nc1nc2c(ncn2[C@@H]2O[C@@H](COP(=O)(O)O)[C@@H](O…
|
| ZINC9334496 ZINC | 0.746 | 363.2 Da LogP -2.57 TPSA 206.0 | 1 viol. | ✓ Clean |
Nc1nc2c(ncn2[C@H]2O[C@@H](COP(=O)(O)O)[C@H](O)[…
|
| ZINC1532637 ZINC | 0.717 | 283.2 Da LogP -2.69 TPSA 159.5 | ✓ Ro5 | ✓ Clean |
Nc1nc2c(ncn2[C@H]2O[C@@H](CO)[C@H](O)[C@@H]2O)c…
|
| ZINC1550030 ZINC | 0.717 | 283.2 Da LogP -2.69 TPSA 159.5 | ✓ Ro5 | ✓ Clean |
Nc1nc2c(ncn2[C@@H]2O[C@H](CO)[C@@H](O)[C@H]2O)c…
|
| ZINC1570863 ZINC | 0.717 | 283.2 Da LogP -2.69 TPSA 159.5 | ✓ Ro5 | ✓ Clean |
Nc1nc2c(ncn2[C@H]2O[C@H](CO)[C@@H](O)[C@H]2O)c(…
|
| ZINC1698205 ZINC | 0.717 | 283.2 Da LogP -2.69 TPSA 159.5 | ✓ Ro5 | ✓ Clean |
Nc1nc2c(ncn2[C@H]2O[C@H](CO)[C@@H](O)[C@@H]2O)c…
|
| ZINC2020098 ZINC | 0.717 | 283.2 Da LogP -2.69 TPSA 159.5 | ✓ Ro5 | ✓ Clean |
Nc1nc2c(ncn2[C@H]2O[C@@H](CO)[C@H](O)[C@H]2O)c(…
|
| ZINC3869967 ZINC | 0.717 | 283.2 Da LogP -2.69 TPSA 159.5 | ✓ Ro5 | ✓ Clean |
Nc1nc2c(ncn2[C@H]2O[C@@H](CO)[C@@H](O)[C@H]2O)c…
|
| ZINC3869968 ZINC | 0.717 | 283.2 Da LogP -2.69 TPSA 159.5 | ✓ Ro5 | ✓ Clean |
Nc1nc2c(ncn2[C@@H]2O[C@@H](CO)[C@@H](O)[C@H]2O)…
|
| ZINC3869969 ZINC | 0.717 | 283.2 Da LogP -2.69 TPSA 159.5 | ✓ Ro5 | ✓ Clean |
Nc1nc2c(ncn2[C@H]2O[C@@H](CO)[C@@H](O)[C@@H]2O)…
|
| ZINC3869970 ZINC | 0.717 | 283.2 Da LogP -2.69 TPSA 159.5 | ✓ Ro5 | ✓ Clean |
Nc1nc2c(ncn2[C@@H]2O[C@@H](CO)[C@@H](O)[C@@H]2O…
|
| ZINC5605239 ZINC | 0.717 | 283.2 Da LogP -2.69 TPSA 159.5 | ✓ Ro5 | ✓ Clean |
Nc1nc2c(ncn2[C@@H]2O[C@@H](CO)[C@H](O)[C@H]2O)c…
|
| ZINC6119283 ZINC | 0.717 | 283.2 Da LogP -2.69 TPSA 159.5 | ✓ Ro5 | ✓ Clean |
Nc1nc2c(ncn2[C@@H]2O[C@H](CO)[C@H](O)[C@H]2O)c(…
|
| ZINC6585367 ZINC | 0.717 | 283.2 Da LogP -2.69 TPSA 159.5 | ✓ Ro5 | ✓ Clean |
Nc1nc2c(ncn2[C@@H]2O[C@H](CO)[C@@H](O)[C@@H]2O)…
|
| ZINC8613125 ZINC | 0.717 | 283.2 Da LogP -2.69 TPSA 159.5 | ✓ Ro5 | ✓ Clean |
Nc1nc2c(ncn2[C@@H]2O[C@H](CO)[C@H](O)[C@@H]2O)c…
|
| ZINC12503440 ZINC | 0.697 | 363.2 Da LogP -2.57 TPSA 206.0 | 1 viol. | ✓ Clean |
Nc1nc2c(ncn2[C@@H]2O[C@H](CO)[C@@H](OP(=O)(O)O)…
|
| ZINC1530370 ZINC | 0.697 | 363.2 Da LogP -2.57 TPSA 206.0 | 1 viol. | ✓ Clean |
Nc1nc2c(ncn2[C@H]2O[C@@H](CO)[C@H](OP(=O)(O)O)[…
|
| ZINC28631009 ZINC | 0.697 | 363.2 Da LogP -2.57 TPSA 206.0 | 1 viol. | ✓ Clean |
Nc1nc2c(ncn2[C@@H]2O[C@H](CO)[C@H](OP(=O)(O)O)[…
|
| ZINC3872740 ZINC | 0.697 | 363.2 Da LogP -2.57 TPSA 206.0 | 1 viol. | ✓ Clean |
Nc1nc2c(ncn2[C@H]2O[C@@H](CO)[C@@H](OP(=O)(O)O)…
|
| ZINC3872741 ZINC | 0.697 | 363.2 Da LogP -2.57 TPSA 206.0 | 1 viol. | ✓ Clean |
Nc1nc2c(ncn2[C@@H]2O[C@@H](CO)[C@@H](OP(=O)(O)O…
|
| ZINC3872742 ZINC | 0.697 | 363.2 Da LogP -2.57 TPSA 206.0 | 1 viol. | ✓ Clean |
Nc1nc2c(ncn2[C@H]2O[C@@H](CO)[C@@H](OP(=O)(O)O)…
|
| ZINC3872743 ZINC | 0.697 | 363.2 Da LogP -2.57 TPSA 206.0 | 1 viol. | ✓ Clean |
Nc1nc2c(ncn2[C@@H]2O[C@@H](CO)[C@@H](OP(=O)(O)O…
|
| ZINC13783929 ZINC | 0.692 | 297.3 Da LogP -2.03 TPSA 148.5 | ✓ Ro5 | ✓ Clean |
CO[C@H]1[C@@H](n2cnc3c(=O)[nH]c(N)nc32)O[C@H](C…
|
| ZINC2522480 ZINC | 0.692 | 297.3 Da LogP -2.03 TPSA 148.5 | ✓ Ro5 | ✓ Clean |
CO[C@H]1[C@@H](O)[C@H](CO)O[C@@H]1n1cnc2c(=O)[n…
|
| ZINC34283520 ZINC | 0.692 | 297.3 Da LogP -2.03 TPSA 148.5 | ✓ Ro5 | ✓ Clean |
CO[C@@H]1[C@@H](O)[C@@H](CO)O[C@H]1n1cnc2c(=O)[…
|
| ZINC44699728 ZINC | 0.692 | 297.3 Da LogP -2.03 TPSA 148.5 | ✓ Ro5 | ✓ Clean |
CO[C@H]1[C@@H](O)[C@@H](CO)O[C@H]1n1cnc2c(=O)[n…
|
| ZINC5998211 ZINC | 0.692 | 297.3 Da LogP -2.03 TPSA 148.5 | ✓ Ro5 | ✓ Clean |
CO[C@@H]1[C@H](O)[C@@H](CO)O[C@H]1n1cnc2c(=O)[n…
|
| ZINC8830753 ZINC | 0.692 | 297.3 Da LogP -2.03 TPSA 148.5 | ✓ Ro5 | ✓ Clean |
CO[C@H]1[C@@H](n2cnc3c(=O)[nH]c(N)nc32)O[C@@H](…
|
| ZINC8830754 ZINC | 0.692 | 297.3 Da LogP -2.03 TPSA 148.5 | ✓ Ro5 | ✓ Clean |
CO[C@@H]1[C@@H](n2cnc3c(=O)[nH]c(N)nc32)O[C@@H]…
|
| ZINC8830755 ZINC | 0.692 | 297.3 Da LogP -2.03 TPSA 148.5 | ✓ Ro5 | ✓ Clean |
CO[C@@H]1[C@@H](O)[C@H](CO)O[C@@H]1n1cnc2c(=O)[…
|
| ZINC96085730 ZINC | 0.692 | 297.3 Da LogP -2.03 TPSA 148.5 | ✓ Ro5 | ✓ Clean |
CO[C@H]1[C@H](O)[C@@H](CO)O[C@H]1n1cnc2c(=O)[nH…
|
| ZINC100727895 ZINC | 0.677 | 347.2 Da LogP -2.50 TPSA 196.8 | 1 viol. | ✓ Clean |
Nc1nc2c(ncn2[C@@H]2O[C@H](CO)[C@@H](O)[C@H]2P(=…
|
| ZINC17610743 ZINC | 0.677 | 347.2 Da LogP -2.50 TPSA 196.8 | 1 viol. | ✓ Clean |
Nc1nc2c(ncn2[C@@H]2O[C@H](CO)[C@@H](O)[C@@H]2P(…
|
| ZINC115136272 ZINC | 0.676 | 341.3 Da LogP -2.02 TPSA 157.7 | ✓ Ro5 | ✓ Clean |
COCCO[C@H]1[C@H](O)[C@@H](CO)O[C@H]1n1cnc2c(=O)…
|
| ZINC90556174 ZINC | 0.676 | 341.3 Da LogP -2.02 TPSA 157.7 | ✓ Ro5 | ✓ Clean |
COCCO[C@H]1[C@@H](O)[C@@H](CO)O[C@@H]1n1cnc2c(=…
|
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.