Ligand profile

FX6

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

Bound to: VK055_4565 — hypothetical protein

Via homolog PDB 7cfk UniProt A0A109QFA5 Formula C₉H₁₁N₅O₂S
Mol. weight 253.29 Da
Permeability Check
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
FX6
PDB
7cfk
UniProt (similar protein)
A0A109QFA5
Target protein
VK055_4565

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 253.29 Da
LogP (Crippen) 0.89
H-bond donors 3
H-bond acceptors 6
TPSA 117.78 Ų
Rotatable bonds 4
Aromatic rings 2 / 2
Heavy atoms 17
Fraction sp³ C 0.33
Formula C₉H₁₁N₅O₂S

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 117.8
  • −1 ≤ LogP ≤ 5 0.89
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 253.3
  • LogP ≤ 5 0.89
  • H-bond donors ≤ 5 3
  • H-bond acceptors ≤ 10 6
Veber's rules Pass
  • Rotatable bonds ≤ 10 4
  • TPSA ≤ 140 Ų 117.8
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
CC[C@@H](C(=O)O)Sc1[nH]c2c(n1)c(ncn2)N
InChI 
InChI=1S/C9H11N5O2S/c1-2-4(8(15)16)17-9-13-5-6(10)11-3-12-7(5)14-9/h3-4H,2H2,1H3,(H,15,16)(H3,10,11,12,13,14)/t4-/m0/s1
InChIKey 
USXGXECUDHKQHW-BYPYZUCNSA-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
PF00571

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_4565.

PDB 4

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

Ligand PDB entry

ZINC 50

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

Compound Similarity (Tanimoto)