Ligand profile

TPO

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

Bound to: VK055_4301 — threonine-phosphate decarboxylase

Via homolog PDB 1lc7 UniProt P97084 Formula C₄H₁₀NO₆P
Mol. weight 199.10 Da
Permeability Check
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
TPO
PDB
1lc7
UniProt (similar protein)
P97084
Target protein
VK055_4301

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 199.10 Da
LogP (Crippen) -1.10
H-bond donors 4
H-bond acceptors 4
TPSA 130.08 Ų
Rotatable bonds 4
Aromatic rings 0 / 0
Heavy atoms 12
Fraction sp³ C 0.75
Formula C₄H₁₀NO₆P

Drug-likeness

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

Permeability proxy Check

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 130.1
  • −1 ≤ LogP ≤ 5 -1.10
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 199.1
  • LogP ≤ 5 -1.10
  • H-bond donors ≤ 5 4
  • H-bond acceptors ≤ 10 4
Veber's rules Pass
  • Rotatable bonds ≤ 10 4
  • TPSA ≤ 140 Ų 130.1
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
C[C@H]([C@@H](C(=O)O)N)OP(=O)(O)O
InChI 
InChI=1S/C4H10NO6P/c1-2(3(5)4(6)7)11-12(8,9)10/h2-3H,5H2,1H3,(H,6,7)(H2,8,9,10)/t2-,3+/m1/s1
InChIKey 
USRGIUJOYOXOQJ-GBXIJSLDSA-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
PF00155

External resources

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

Other ligands for this protein

Quick navigation to other ligands bound to VK055_4301.

PDB 4

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

Ligand PDB entry

ZINC 29

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

Compound Similarity (Tanimoto)