6DI1

Target information

RCSB PDB
6DI1
Title
CRYSTAL STRUCTURE OF BTK IN COMPLEX WITH COVALENT FRAGMENT LIGAND
Method
X-RAY DIFFRACTION
Resolution
1.1
Classification
TRANSFERASE/TRANSFERASE inhibitor
Organism
Homo sapiens
Protein
Tyrosine-protein kinase BTK (Q06187)    Looking for covalent inhibitors of this target ?
Year
2018
Publication Title
Discovery of a novel series of pyridine and pyrimidine carboxamides as potent and selective covalent inhibitors of Btk.
Abstract

Btk is an attractive target for the treatment of a range of Bcell malignancies as well as several autoimmune diseases such as murine lupus and rheumatoid arthritis. Several covalent irreversible inhibitors of Btk are currently in development including ibrutinib which was approved for treatment of B-cell malignancies. Herein, we describe our efforts using X-ray guided structure based design (SBD) to identify a novel chemical series of covalent Btk inhibitors. The resulting pyridine carboxamides were potent and selective inhibitors of Btk having excellent enzymatic and cellular inhibitory activity.

External Link
RCSB PDB





Ligand information

HET
GJD
Chain ID
A
HET Number
701
Molecular Formula
C12H16N6O2
Structure
2D structure
IUPAC Name
4-amino-2-[(3S)-3-(prop-2-enoylamino)pyrrolidin-1-yl]pyrimidine-5-carboxamide
InChI
InChI=1S/C12H16N6O2/c1-2-9(19)16-7-3-4-18(6-7)12-15-5-8(11(14)20)10(13)17-12/h2,5,7H,1,3-4,6H2,(H2,14,20)(H,16,19)(H2,13,15,17)/t7-/m0/s1
InChI Key
XVHORVZLLWNYMP-ZETCQYMHSA-N
Canonical SMILES
NC(=O)c1cnc(nc1N)N2CC[C@@H](C2)NC(=O)C=C
Bioactivity data
CI004483

Covalent Binding

Warhead
Michael Acceptor
Reaction Mechanism
Michael Addition
Residue
CYS : 481
Residue Chain
A
Interactions
Pharmacophore Model