Ligand profile

4CO

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

Bound to: VK055_0301 — proofreading thioesterase in enterobactin biosynthesis

Via homolog PDB 1q4t UniProt Q04416 Formula C₂₉H₄₂N₇O₁₈P₃S
Mol. weight 901.68 Da
Permeability Check
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
4CO
PDB
1q4t
UniProt (similar protein)
Q04416
Target protein
VK055_0301

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 901.68 Da
LogP (Crippen) -0.27
H-bond donors 10
H-bond acceptors 20
TPSA 383.86 Ų
Rotatable bonds 22
Aromatic rings 3 / 4
Heavy atoms 58
Fraction sp³ C 0.52
Formula C₂₉H₄₂N₇O₁₈P₃S

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 383.9
  • −1 ≤ LogP ≤ 5 -0.27
Lipinski's Rule of Five Fail 3 violations
  • MW ≤ 500 Da 901.7
  • LogP ≤ 5 -0.27
  • H-bond donors ≤ 5 10
  • H-bond acceptors ≤ 10 20
Veber's rules Fail
  • Rotatable bonds ≤ 10 22
  • TPSA ≤ 140 Ų 383.9
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
CC(C)(CO[P@](=O)(O)O[P@@](=O)(O)OC[C@@H]1[C@H]([C@H]([C@@H](O1)n2cnc3c2ncnc3N)O)OP(=O)(O)O)[C@H](C(=O)NCCC(=O)NCCSCC(=O)c4ccc(cc4)O)O
InChI 
InChI=1S/C29H42N7O18P3S/c1-29(2,24(41)27(42)32-8-7-20(39)31-9-10-58-12-18(38)16-3-5-17(37)6-4-16)13-51-57(48,49)54-56(46,47)50-11-19-23(53-55(43,44)45)22(40)28(52-19)36-15-35-21-25(30)33-14-34-26(21)36/h3-6,14-15,19,22-24,28,37,40-41H,7-13H2,1-2H3,(H,31,39)(H,32,42)(H,46,47)(H,48,49)(H2,30,33,34)(H2,43,44,45)/t19-,22-,23-,24+,28-/m1/s1
InChIKey 
ZQLMPRRTUJBILA-VXAHOBLNSA-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
PF03061

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_0301.

PDB 8

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)