KpKP13 Protein target profile

reductase SDR family protein

Accession: KP13_31765

Gene: AHE42210.1 3D evidence: AlphaFold DB model + ColabFold model UniProt A0A0H3H4A2
Length 262
Pocket druggability (P2Rank · AlphaFold DB model) 0.954
Direct ligand evidence 0 58 total records
Functional annotation 0 EC 0 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
Hit
Human identity (%)
35.185 Lower values reduce human off-target concern.
Human E-value
1.32e-10
Gut microbiome similarity
2.1% 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
95.11 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) 0.954
Structure A0A0H3H4A2
Pocket Pocket 1
Druggability (FPocket) 0.809
Structure A0A0H3H4A2
Pocket Pocket 10
ColabFold model
P2Rank 0.964 · Pocket 1
FPocket 0.933 · Pocket 13
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 100 / 4744 genomes with a hit
Prevalence 2.1%

Sequence

Primary amino-acid sequence viewer.

MTTQPERGLLMTQRIALVTGGSRGLGKNAALKLAAKGTDILLTYHSNRQAALDVVAEIEKKGVKAAALALNVGDSTTFDAFASEVAQVLSQKWGRTTFDYLLNNAGIGLNAPFAETSEAQFDELMNIQFKGPFFLTQRLLPLLQDGGRILNVSSGLARFALPGYAAYAAMKGAMEVLTRYQAKELGGRGISVNIIAPGAIETDFGGGEVRDNAEVNRHIAAQTALGRVGLPDDIGDAIAALLSDELAWMNAQRVEVSGGMFL

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

Subcellular localization

Localization
Cytoplasmic

No GO or EC annotations are currently loaded for this protein.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

23 records
Show feature table
Start End DB Term Name
14 198 SMART SM00822 This enzymatic domain is part of bacterial polyketide synthases and catalyses the first step in the reductive modification of the beta-carbonyl centres in the growing polyketide chain. It uses NADPH to reduce the keto group to a hydroxy group.
11 261 PANTHER PTHR42879 3-OXOACYL-(ACYL-CARRIER-PROTEIN) REDUCTASE
9 262 FunFam G3DSA:3.40.50.720:FF:000374 3-oxoacyl-(Acyl-carrier-protein) reductase
7 261 Gene3D G3DSA:3.40.50.720 -
22 260 Pfam PF13561 Enoyl-(Acyl carrier protein) reductase
96 107 PRINTS PR00080 Short-chain dehydrogenase/reductase (SDR) superfamily signature
96 107 InterPro IPR002347 Short-chain dehydrogenase/reductase SDR
167 186 PRINTS PR00080 Short-chain dehydrogenase/reductase (SDR) superfamily signature
167 186 InterPro IPR002347 Short-chain dehydrogenase/reductase SDR
147 155 PRINTS PR00080 Short-chain dehydrogenase/reductase (SDR) superfamily signature
147 155 InterPro IPR002347 Short-chain dehydrogenase/reductase SDR
15 32 PRINTS PR00081 Glucose/ribitol dehydrogenase family signature
15 32 InterPro IPR002347 Short-chain dehydrogenase/reductase SDR
96 107 PRINTS PR00081 Glucose/ribitol dehydrogenase family signature
167 186 PRINTS PR00081 Glucose/ribitol dehydrogenase family signature
188 205 PRINTS PR00081 Glucose/ribitol dehydrogenase family signature
188 205 InterPro IPR002347 Short-chain dehydrogenase/reductase SDR
224 244 PRINTS PR00081 Glucose/ribitol dehydrogenase family signature
224 244 InterPro IPR002347 Short-chain dehydrogenase/reductase SDR
141 157 PRINTS PR00081 Glucose/ribitol dehydrogenase family signature
141 157 InterPro IPR002347 Short-chain dehydrogenase/reductase SDR
14 261 SUPERFAMILY SSF51735 NAD(P)-binding Rossmann-fold domains
14 261 InterPro IPR036291 NAD(P)-binding domain 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.

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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
0.954
Likely same site as FPocket 10 0.8 Å 39 shared residues 95% of smaller site
Show in viewer
Surrounding area
Pocket 2 P2Rank #2
0.006
Show in viewer
Surrounding area

Binding pockets · FPocket

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

Pocket 1 FPocket #10
0.809 Unusual size
Likely same site as P2Rank 1 0.8 Å 39 shared residues 95% of smaller site
Show in viewer
Surrounding area
Pocket 2 FPocket #6
0.251 Unusual size
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_A0A0H3H4A2
AlphaFold DB full sequence Viewing
ColabFold KP13_31765
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.

58 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 8 records from similar proteins
Structural ligands 8 0 loaded crystals
Measured bioactivity 0 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
1TJ PDB via homolog 320.3 Da · LogP 2.36 · TPSA 91.7 Open detail RCSB PDB
2V4 PDB via homolog Detail RCSB PDB
BEA PDB via homolog Detail RCSB PDB
MLH PDB via homolog Detail RCSB PDB
NID PDB via homolog Detail RCSB PDB

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
1TJ RCSB PDB Q9ZGC1 320.3 Da LogP 2.36 TPSA 91.7 ✓ Ro5 Alert Cc1cc2c(c(c1)O)C3=C(C(=O)C2)C(=O)c4c(cccc4O)C3=O
2V4 RCSB PDB K0IB23 338.3 Da LogP 1.75 TPSA 111.9 ✓ Ro5 Alert C[C@]1(Cc2cc(c3c(c2C(=O)C1)C(=O)c4cccc(c4C3=O)O…
BEA RCSB PDB Q12634 190.3 Da LogP 1.67 TPSA 31.4 ✓ Ro5 ✓ Clean Cc1cccc2c1n3cn[nH+]c3s2
MLH RCSB PDB V5VHN7 417.3 Da LogP 4.34 TPSA 54.7 ✓ Ro5 ✓ Clean CCOC(=O)c1c2cc(c(cc2n(c1CN(C)C)c3ccccc3)Br)O
NID RCSB PDB Q12634 175.1 Da LogP 1.80 TPSA 60.2 ✓ Ro5 ✓ Clean c1cc2c(c(c1)[N+](=O)[O-])C=CC2=O
PHH RCSB PDB Q12634 271.9 Da LogP 3.97 TPSA 26.3 ✓ Ro5 ✓ Clean C1c2c(c(c(c(c2Cl)Cl)Cl)Cl)C(=O)O1
PYQ RCSB PDB Q12634 173.2 Da LogP 1.52 TPSA 20.3 ✓ Ro5 ✓ Clean c1cc2c3c(c1)CCN3C(=O)CC2
TCL RCSB PDB P71079 289.5 Da LogP 5.14 TPSA 29.5 1 viol. ✓ Clean c1cc(c(cc1Cl)O)Oc2ccc(cc2Cl)Cl

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.