Ligand profile

POA

Ligand co-crystallized with a similar protein (Protein Data Bank).

Bound to: KP13_00092 — 2-aminoethylphosphonate--pyruvate transaminase

Via homolog PDB 1m32 UniProt P96060 Formula C₂H₅O₄P
Mol. weight 124.03 Da
Permeability High
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
POA
PDB
1m32
UniProt (similar protein)
P96060
Target protein
KP13_00092

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 124.03 Da
LogP (Crippen) -0.64
H-bond donors 2
H-bond acceptors 2
TPSA 74.60 Ų
Rotatable bonds 2
Aromatic rings 0 / 0
Heavy atoms 7
Fraction sp³ C 0.50
Formula C₂H₅O₄P

Drug-likeness

Descriptor-based ADME screening flags from SMILES. These are not experimental toxicity results.

Permeability proxy High

Estimated from TPSA and LogP only: TPSA ≤ 90 Ų and −1 ≤ LogP ≤ 5 are treated as a favorable small-molecule permeability screen.

  • TPSA ≤ 90 Ų 74.6
  • −1 ≤ LogP ≤ 5 -0.64
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 124.0
  • LogP ≤ 5 -0.64
  • H-bond donors ≤ 5 2
  • H-bond acceptors ≤ 10 2
Veber's rules Pass
  • Rotatable bonds ≤ 10 2
  • TPSA ≤ 140 Ų 74.6
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
C(C=O)P(=O)(O)O
InChI 
InChI=1S/C2H5O4P/c3-1-2-7(4,5)6/h1H,2H2,(H2,4,5,6)
InChIKey 
YEMKIGUKNDOZEG-UHFFFAOYSA-N

Provenance

Annotation context from LigQ_2, the internal Target step that collects PDB, ChEMBL, and ZINC ligand evidence.

Method
LigQ nearest_k
Source
PDB
Binding sites
PF00266

External resources

Open this ligand in third-party databases and cheminformatics tools.

Other ligands for this protein

Quick navigation to other ligands bound to KP13_00092.

PDB 6

Ligands co-crystallized with this protein (structural evidence).

Ligand PDB entry

ChEMBL 20

Compounds with measured inhibitory activity on this target (higher pchembl = more potent).

Compound Potency (pchembl)

ZINC 50

Virtual screening candidates selected by structural similarity to known actives (Tanimoto ≥ 0.5).

Compound Similarity (Tanimoto)