Protein target profile

HT085_RS00125

prolyl oligopeptidase family serine peptidase

Genome: NZ_AP023069.1 Gene: TUM19854C_00210 E8M63_03400 N776_09215 3D evidence: AlphaFold DB model UniProt A0AA44ZGT4 UniProt A0AAQ1DU23
Length 671
Direct ligand evidence 0 65 total records
Functional annotation 0 EC 4 GO
Target summary

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.

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
Hit
Gut microbiome off-target
Hit

Essentiality

Essential (DEG)
N

Localization

Localization
Unknown

Binding-site evidence

The selected pocket score is the FPocket value used for ranking after applying the curated structure priority. It estimates small-molecule pocket quality; it is not experimental binding evidence. The 3D viewer may show a different loaded structure, so visible pockets can differ.

FPocket Medium
Structure
Pocket

Sequence

Primary amino-acid sequence viewer.

MKSYPDPYRHFENLDSAETQNFAAEANAETRARFLENDKARALSDGILNQMQDTRQIPFCQEHRARMYHFHQNAEYPKGVYRMCTAATYRSGYPEWKILFSVADFDELLGDDVYLGGVSHLVEQPNRALLTLNKSGGDTAYTLEVDLEAGELVEGGFHFPAGKNHVSWRDENSVWVCPAWDERQLTESGYPREVWLVERGKSFEESLPAYQIDKGAMMVNAWRYLDPQGSPIDLIEASDGFYTKTYLQVSSEGGAKPLNLPNDCDVVGYLAGHLLLTLRKDWHRANQSYPSGALVAVKLNRGELGAAQLLFAPDETQALESVETTKRFVVASLLENVQGRLKAWRFADSKWQEAELPHLPSGALEMTDQPWGGDVVYLAASDFTTPLTLFALDLNVMELTVMRLQPQQFVSDGIEVRQFWAVSSDGERIPYFHVGKNAAPDTPTLVYAYGGFGIPELPHYLGSVGKYWLEEGNAFVLANIRGGGEFGPRWHQAAQGISKHKSVDDLLAVVRDLSERGMSSPKHIGLQGGSNGGLITAAAFVREPQSIGALVCEVPLTDMIRYPLLSAGSSWTDEYGNPQKYEACKRRLGELSPYHNLSDGIDYPPALITTSLSDDRVHPAHALKFYAKLRETSPQSWLYSPDGGGHTGNGTQRESADKLACVLLFLKEFLG

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

4 GO

Gene Ontology (GO)

4
  • GO:0004252 Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain by a catalytic mechanism that involves a catalytic triad consisting of a serine nucleophile that is activated by a proton relay involving an acidic residue (e.g. aspartate or glutamate) and a basic residue (usually histidine).
  • GO:0006508 The hydrolysis of proteins into smaller polypeptides and/or amino acids by cleavage of their peptide bonds.
  • GO:0005829 The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
  • GO:0070012 Catalysis of the hydrolysis of a peptide bond in an oligopeptide, i.e. a molecule containing a small number (2 to 20) of amino acid residues connected by peptide bonds.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

23 records
Show feature table
Start End DB Term Name
4 633 Gene3D G3DSA:3.40.50.1820 alpha/beta hydrolase
4 633 InterPro IPR029058 Alpha/Beta hydrolase fold
4 409 SUPERFAMILY SSF50993 Peptidase/esterase 'gauge' domain
5 403 Pfam PF02897 Prolyl oligopeptidase, N-terminal beta-propeller domain
5 403 InterPro IPR023302 Peptidase S9A, N-terminal domain
603 625 PRINTS PR00862 Prolyl oligopeptidase serine protease (S9A) signature
603 625 InterPro IPR002470 Peptidase S9A, prolyl oligopeptidase
528 548 PRINTS PR00862 Prolyl oligopeptidase serine protease (S9A) signature
528 548 InterPro IPR002470 Peptidase S9A, prolyl oligopeptidase
584 599 PRINTS PR00862 Prolyl oligopeptidase serine protease (S9A) signature
584 599 InterPro IPR002470 Peptidase S9A, prolyl oligopeptidase
470 494 PRINTS PR00862 Prolyl oligopeptidase serine protease (S9A) signature
470 494 InterPro IPR002470 Peptidase S9A, prolyl oligopeptidase
443 461 PRINTS PR00862 Prolyl oligopeptidase serine protease (S9A) signature
443 461 InterPro IPR002470 Peptidase S9A, prolyl oligopeptidase
498 517 PRINTS PR00862 Prolyl oligopeptidase serine protease (S9A) signature
498 517 InterPro IPR002470 Peptidase S9A, prolyl oligopeptidase
467 670 Pfam PF00326 Prolyl oligopeptidase family
467 670 InterPro IPR001375 Peptidase S9, prolyl oligopeptidase, catalytic domain
4 647 PANTHER PTHR42881 PROLYL ENDOPEPTIDASE
414 670 SUPERFAMILY SSF53474 alpha/beta-Hydrolases
414 670 InterPro IPR029058 Alpha/Beta hydrolase fold
55 406 Gene3D G3DSA:2.130.10.120 -

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.

Loading 3D structure...

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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 · FPocket

Druggability: high ≥ 0.7 · medium 0.4–0.69 · low < 0.4

Site 1 FPocket #3
0.682
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Surrounding area
Site 2 FPocket #17
0.574
Likely same site as P2Rank 3 1.3 Å 11 shared residues 92% of smaller site
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Surrounding area
Site 3 FPocket #6
0.255
Likely same site as P2Rank 4 7.4 Å 5 shared residues 50% of smaller site
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Surrounding area

Binding pockets · P2Rank

Probability: high ≥ 0.5 · medium 0.2–0.49 · low < 0.2

Site 1 P2Rank #1
0.6
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Surrounding area
Site 2 P2Rank #2
0.353
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Surrounding area
Site 3 P2Rank #3
0.338
Likely same site as FPocket 17 1.3 Å 11 shared residues 92% of smaller site
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Surrounding area
Site 4 P2Rank #4
0.241
Likely same site as FPocket 6 7.4 Å 5 shared residues 50% of smaller site
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Surrounding area
Site 5 P2Rank #5
0.129
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Surrounding area
All structural evidence 0 experimental · 1 predicted

Structural evidence

0 + 1

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 HT085_RS00125
AlphaFold DB full sequence Viewing

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.

65 records
Chemistry signal

Structural and bioactivity evidence are both available for this target.

Direct evidence 0 same-protein records
Transferred evidence 15 records from similar proteins
Structural ligands 2 0 loaded crystals
Measured bioactivity 13 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
15P PDB via homolog 1529.8 Da · LogP 0.17 · TPSA 334.1 Open detail RCSB PDB
BKO PDB via homolog Detail RCSB PDB
CHEMBL189620 ChEMBL via homolog · pchembl 9.52 (~0.3 nM) Detail ChEMBL
ZPR ChEMBL via homolog · pchembl 9.46 (~0.3 nM) Detail ChEMBL
CHEMBL1086705 ChEMBL via homolog · pchembl 8.62 (~2.4 nM) Detail ChEMBL

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
15P RCSB PDB Q9X6R4 1529.8 Da LogP 0.17 TPSA 334.1 2 viol. ✓ Clean COCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO…
BKO RCSB PDB A0A1X9T5X9 466.6 Da LogP 3.51 TPSA 70.1 ✓ Ro5 ✓ Clean c1ccc(cc1)/C=C/c2ccccc2OCCCC(=O)N3CC(CC3C(=O)N4…

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.