Ligand profile

KP2

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

Bound to: VK055_0984 — hypothetical protein

Via homolog PDB 4cm3 UniProt O76290 Formula C₁₂H₁₁N₅
Mol. weight 225.25 Da
Permeability Check
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
KP2
PDB
4cm3
UniProt (similar protein)
O76290
Target protein
VK055_0984

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 225.25 Da
LogP (Crippen) 1.79
H-bond donors 3
H-bond acceptors 4
TPSA 93.61 Ų
Rotatable bonds 1
Aromatic rings 3 / 3
Heavy atoms 17
Fraction sp³ C 0.00
Formula C₁₂H₁₁N₅

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 93.6
  • −1 ≤ LogP ≤ 5 1.79
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 225.3
  • LogP ≤ 5 1.79
  • H-bond donors ≤ 5 3
  • H-bond acceptors ≤ 10 4
Veber's rules Pass
  • Rotatable bonds ≤ 10 1
  • TPSA ≤ 140 Ų 93.6
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
c1ccc(cc1)c2c[nH]c3c2c(nc(n3)N)N
InChI 
InChI=1S/C12H11N5/c13-10-9-8(7-4-2-1-3-5-7)6-15-11(9)17-12(14)16-10/h1-6H,(H5,13,14,15,16,17)
InChIKey 
LEOTWBKRAWDNPV-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
PF13561

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_0984.

PDB 92

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

Ligand PDB entry

ChEMBL 35

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)