4AG4

Crystal structure of a DDR1-Fab complex

4AG4 の概要

• エントリーDOI: 10.2210/pdb4ag4/pdb
• 分子名称: EPITHELIAL DISCOIDIN DOMAIN-CONTAINING RECEPTOR 1, MONOCLONAL ANTIBODY 3E3 HEAVY CHAIN, MONOCLONAL ANTIBODY 3E3 LIGHT CHAIN, ... (6 entities in total)
• 機能のキーワード: immune system-transferase complex, immune system/transferase
• 由来する生物種: HOMO SAPIENS (HUMAN); 詳細
• タンパク質・核酸の鎖数: 3
• 化学式量合計: 86719.74

構造登録者

Carafoli, F.,Mayer, M.C.,Shiraishi, K.,Pecheva, M.A.,Chan, L.Y.,Nan, R.,Leitinger, B.,Hohenester, E. (登録日: 2012-01-24, 公開日: 2012-04-18, 最終更新日: 2024-11-20)

主引用文献

Carafoli, F.,Mayer, M.C.,Shiraishi, K.,Pecheva, M.A.,Chan, L.Y.,Nan, R.,Leitinger, B.,Hohenester, E.
Structure of the Discoidin Domain Receptor 1 Extracellular Region Bound to an Inhibitory Fab Fragment Reveals Features Important for Signaling.
Structure, 20:688-, 2012

PubMed Abstract: The discoidin domain receptors, DDR1 and DDR2, are constitutively dimeric receptor tyrosine kinases that are activated by triple-helical collagen. Aberrant DDR signaling contributes to several human pathologies, including many cancers. We have generated monoclonal antibodies (mAbs) that inhibit DDR1 signaling without interfering with collagen binding. The crystal structure of the monomeric DDR1 extracellular region bound to the Fab fragment of mAb 3E3 reveals that the collagen-binding discoidin (DS) domain is tightly associated with the following DS-like domain, which contains the epitopes of all mAbs. A conserved surface patch in the DS domain outside the collagen-binding site is shown to be required for signaling. Thus, the active conformation of the DDR1 dimer involves collagen-induced contacts between the DS domains, in addition to the previously identified association of transmembrane helices. The mAbs likely inhibit signaling by sterically blocking the extracellular association of DDR1 subunits.

PubMed: 22483115
DOI: 10.1016/J.STR.2012.02.011

実験手法

X-RAY DIFFRACTION (2.8 Å)