Binder profile

KNG

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

Bound to: PA1455 — flagellar biosynthesis sigma factor FliA

Via homolog PDB 6cce UniProt A0QW02 C50H67NO19
Mol. weight 986.07 Da
Permeability Check
PAINS Alert

Identifiers

Database identifiers and provenance.

Ligand ID
KNG
PDB
6cce
UniProt (similar protein)
A0QW02
Target protein
PA1455

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 986.07 Da
LogP (Crippen) 5.64
H-bond donors 7
H-bond acceptors 18
TPSA 292.60 Ų
Rotatable bonds 8
Aromatic rings 2 / 7
Heavy atoms 70
Fraction sp³ C 0.62
Formula C50H67NO19

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.

Lipinski's Rule of Five Fail 4 violations
  • MW ≤ 500 Da 986.1
  • LogP ≤ 5 5.64
  • H-bond donors ≤ 5 7
  • H-bond acceptors ≤ 10 18
Veber's rules Fail
  • Rotatable bonds ≤ 10 8
  • TPSA ≤ 140 Ų 292.6
PAINS Alert

Matches PAINS filter: keto_naphthol_A(2). May be a frequent false positive in HTS — review carefully.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
Cc1c(c2c3c(cc(c2O)NC(=O)/C(=C\CC[C@@H]([C@@H]([C@H]([C@H]([C@H]([C@@H]([C@@H]([C@H](/C=C/O[C@@]4(C(=O)c3c1O4)C)O[C@H]5C[C@H]6[C@@H]([C@H](O5)C)OCO6)C)OC(=O)C)C)O)C)O)[C@H](C)OC(=O)C(C)(C)CC(=O)O)/C)O)O
InChI 
InChI=1S/C50H67NO19/c1-21-13-12-14-29(26(6)67-48(62)49(9,10)19-34(54)55)40(57)23(3)39(56)24(4)43(68-28(8)52)22(2)32(69-35-18-33-45(27(7)66-35)64-20-63-33)15-16-65-50(11)46(60)38-36-31(53)17-30(51-47(21)61)42(59)37(36)41(58)25(5)44(38)70-50/h13,15-17,22-24,26-27,29,32-33,35,39-40,43,45,53,56-59H,12,14,18-20H2,1-11H3,(H,51,61)(H,54,55)/b16-15+,21-13-/t22-,23+,24-,26+,27-,29-,32+,33+,35+,39-,40-,43-,45-,50+/m1/s1
InChIKey 
RKRZBNCHQZDJPK-UAXKWEMASA-N

Provenance

Annotation context from LigQ_2, the internal TPW step that collects PDB, ChEMBL, and ZINC ligand evidence.

Method
LigQ nearest_k
Source
PDB
Binding sites
PF04539' 'PF04563' 'PF04565

External resources

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

Other binders for this protein

Quick navigation to other ligands bound to PA1455.

PDB 11

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)