3BBT

crystal structure of the ErbB4 kinase in complex with lapatinib

Summary for 3BBT

• Entry DOI: 10.2210/pdb3bbt/pdb
• Related: 3BBW 3BCE
• Descriptor: Receptor tyrosine-protein kinase erbB-4, N-{3-CHLORO-4-[(3-FLUOROBENZYL)OXY]PHENYL}-6-[5-({[2-(METHYLSULFONYL)ETHYL]AMINO}METHYL)-2-FURYL]-4-QUINAZOLINAMINE (3 entities in total)
• Functional Keywords: inactive kinase conformation, atp-binding, glycoprotein, membrane, nucleotide-binding, phosphoprotein, receptor, transferase, transmembrane, tyrosine-protein kinase
• Biological source: Homo sapiens (human)
• Cellular location: Cell membrane ; Single-pass type I membrane protein . ERBB4 intracellular domain: Nucleus : Q15303
• Total number of polymer chains: 2
• Total formula weight: 76145.03

Authors

Qiu, C. (deposition date: 2007-11-11, release date: 2008-02-12, Last modification date: 2024-02-21)

Primary citation

Qiu, C.,Tarrant, M.K.,Choi, S.H.,Sathyamurthy, A.,Bose, R.,Banjade, S.,Pal, A.,Bornmann, W.G.,Lemmon, M.A.,Cole, P.A.,Leahy, D.J.
Mechanism of Activation and Inhibition of the HER4/ErbB4 Kinase.
Structure, 16:460-467, 2008

PubMed Abstract: HER4/ErbB4 is a ubiquitously expressed member of the EGF/ErbB family of receptor tyrosine kinases that is essential for normal development of the heart, nervous system, and mammary gland. We report here crystal structures of the ErbB4 kinase domain in active and lapatinib-inhibited forms. Active ErbB4 kinase adopts an asymmetric dimer conformation essentially identical to that observed to be important for activation of the EGF receptor/ErbB1 kinase. Mutagenesis studies of intact ErbB4 in Ba/F3 cells confirm the importance of this asymmetric dimer for activation of intact ErbB4. Lapatinib binds to an inactive form of the ErbB4 kinase in a mode equivalent to its interaction with the EGF receptor. All ErbB4 residues contacted by lapatinib are conserved in the EGF receptor and HER2/ErbB2, which lapatinib also targets. These results demonstrate that key elements of kinase activation and inhibition are conserved among ErbB family members.

PubMed: 18334220
DOI: 10.1016/j.str.2007.12.016

Experimental method

X-RAY DIFFRACTION (2.8 Å)