Ligand profile

AQQ

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

Bound to: KP13_01017 — Lysine-arginine-ornithine-binding periplasmic protein

Via homolog PDB 5ota UniProt P35120 Formula C₈H₁₆N₂O₄
Mol. weight 204.23 Da
Permeability Check
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
AQQ
PDB
5ota
UniProt (similar protein)
P35120
Target protein
KP13_01017

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 204.23 Da
LogP (Crippen) -0.76
H-bond donors 4
H-bond acceptors 4
TPSA 112.65 Ų
Rotatable bonds 7
Aromatic rings 0 / 0
Heavy atoms 14
Fraction sp³ C 0.75
Formula C₈H₁₆N₂O₄

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 112.6
  • −1 ≤ LogP ≤ 5 -0.76
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 204.2
  • LogP ≤ 5 -0.76
  • H-bond donors ≤ 5 4
  • H-bond acceptors ≤ 10 4
Veber's rules Pass
  • Rotatable bonds ≤ 10 7
  • TPSA ≤ 140 Ų 112.6
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
C[C@H](C(=O)O)N[C@@H](CCCN)C(=O)O
InChI 
InChI=1S/C8H16N2O4/c1-5(7(11)12)10-6(8(13)14)3-2-4-9/h5-6,10H,2-4,9H2,1H3,(H,11,12)(H,13,14)/t5-,6+/m1/s1
InChIKey 
ZQKXJZFWRBQTIO-RITPCOANSA-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
PF00497

External resources

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

Other ligands for this protein

Quick navigation to other ligands bound to KP13_01017.

PDB 7

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)