Ligand profile

FV8

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

Bound to: VK055_2003 — ferrichrome receptor fcuA

Via homolog PDB 6h7f UniProt Q76HJ9 Formula C₁₆H₁₈N₄O₅
Mol. weight 346.34 Da
Permeability Check
PAINS Alert

Identifiers

Database identifiers and provenance.

Ligand ID
FV8
PDB
6h7f
UniProt (similar protein)
Q76HJ9
Target protein
VK055_2003

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 346.34 Da
LogP (Crippen) 0.82
H-bond donors 4
H-bond acceptors 7
TPSA 131.27 Ų
Rotatable bonds 5
Aromatic rings 2 / 3
Heavy atoms 25
Fraction sp³ C 0.31
Formula C₁₆H₁₈N₄O₅

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 131.3
  • −1 ≤ LogP ≤ 5 0.82
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 346.3
  • LogP ≤ 5 0.82
  • H-bond donors ≤ 5 4
  • H-bond acceptors ≤ 10 7
Veber's rules Pass
  • Rotatable bonds ≤ 10 5
  • TPSA ≤ 140 Ų 131.3
PAINS Alert

Matches PAINS filter: catechol_A(92). May be a frequent false positive in HTS — review carefully.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
C[C@@H]1[C@H](N=C(O1)c2cccc(c2O)O)C(=O)N(CCc3c[nH]cn3)O
InChI 
InChI=1S/C16H18N4O5/c1-9-13(16(23)20(24)6-5-10-7-17-8-18-10)19-15(25-9)11-3-2-4-12(21)14(11)22/h2-4,7-9,13,21-22,24H,5-6H2,1H3,(H,17,18)/t9-,13+/m1/s1
InChIKey 
FCWIGDCVHNNXFS-RNCFNFMXSA-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
PF00593' 'PF07715

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_2003.

PDB 6

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)