Ligand profile

FKA

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

Bound to: KP13_01972 — FKBP-type 16 kDa peptidyl-prolyl cis-trans isomerase

Via homolog PDB 1a7x UniProt P62942 Formula C₅₁H₇₆N₂O₁₄
Mol. weight 941.17 Da
Permeability Check
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
FKA
PDB
1a7x
UniProt (similar protein)
P62942
Target protein
KP13_01972

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 941.17 Da
LogP (Crippen) 5.38
H-bond donors 4
H-bond acceptors 14
TPSA 216.69 Ų
Rotatable bonds 10
Aromatic rings 1 / 5
Heavy atoms 67
Fraction sp³ C 0.71
Formula C₅₁H₇₆N₂O₁₄

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 216.7
  • −1 ≤ LogP ≤ 5 5.38
Lipinski's Rule of Five Fail 3 violations
  • MW ≤ 500 Da 941.2
  • LogP ≤ 5 5.38
  • H-bond donors ≤ 5 4
  • H-bond acceptors ≤ 10 14
Veber's rules Fail
  • Rotatable bonds ≤ 10 10
  • TPSA ≤ 140 Ų 216.7
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
C[C@@H]1C[C@@H]([C@@H]2[C@H](C[C@H]([C@@](O2)(C(=O)C(=O)N3CCCC[C@H]3C(=O)O[C@@H]([C@@H]([C@H](CC(=O)[C@@H](\C=C(\C1)/C)CCOC(=O)NCc4ccccc4)O)C)/C(=C/[C@@H]5CC[C@H]([C@@H](C5)OC)O)/C)O)C)OC)OC
InChI 
InChI=1S/C51H76N2O14/c1-30-22-31(2)24-43(63-7)46-44(64-8)26-33(4)51(61,67-46)47(57)48(58)53-20-13-12-16-38(53)49(59)66-45(32(3)25-36-17-18-39(54)42(27-36)62-6)34(5)40(55)28-41(56)37(23-30)19-21-65-50(60)52-29-35-14-10-9-11-15-35/h9-11,14-15,23,25,31,33-34,36-40,42-46,54-55,61H,12-13,16-22,24,26-29H2,1-8H3,(H,52,60)/b30-23+,32-25+/t31-,33+,34+,36-,37+,38-,39+,40-,42+,43-,44-,45+,46+,51+/m0/s1
InChIKey 
JEQCTALUECDHLT-VQBDMAPKSA-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
PF00254

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_01972.

PDB 24

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

Ligand PDB entry

ChEMBL 100

Compounds with measured inhibitory activity on this target (higher pchembl = more potent).

Compound Potency (pchembl)

ZINC 50

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

Compound Similarity (Tanimoto)