3IQU

Crystal Structure of human 14-3-3 sigma in Complex with Raf1 peptide (6mer)

3IQU の概要

• エントリーDOI: 10.2210/pdb3iqu/pdb
• 関連するPDBエントリー: 3CU8 3IQJ 3IQV
• 分子名称: 14-3-3 protein sigma, 6-mer from RAF proto-oncogene serine/threonine-protein kinase, CHLORIDE ION, ... (5 entities in total)
• 機能のキーワード: signal transuction, nucleus, phosphoprotein, secreted, protein binding, signaling protein
• 由来する生物種: Homo sapiens (human); 詳細
• 細胞内の位置: Cytoplasm: P31947 P04049
• タンパク質・核酸の鎖数: 2
• 化学式量合計: 27426.96

構造登録者

Ottmann, C.,Weyand, M. (登録日: 2009-08-21, 公開日: 2010-09-01, 最終更新日: 2024-10-30)

主引用文献

Molzan, M.,Schumacher, B.,Ottmann, C.,Baljuls, A.,Polzien, L.,Weyand, M.,Thiel, P.,Rose, R.,Rose, M.,Kuhenne, P.,Kaiser, M.,Rapp, U.R.,Kuhlmann, J.,Ottmann, C.
Impaired binding of 14-3-3 to C-RAF in Noonan syndrome suggests new approaches in diseases with increased Ras signaling.
Mol.Cell.Biol., 30:4698-4711, 2010

PubMed Abstract: The Ras-RAF-mitogen-activated protein kinase (Ras-RAF-MAPK) pathway is overactive in many cancers and in some developmental disorders. In one of those disorders, namely, Noonan syndrome, nine activating C-RAF mutations cluster around Ser(259), a regulatory site for inhibition by 14-3-3 proteins. We show that these mutations impair binding of 14-3-3 proteins to C-RAF and alter its subcellular localization by promoting Ras-mediated plasma membrane recruitment of C-RAF. By presenting biophysical binding data, the 14-3-3/C-RAFpS(259) crystal structure, and cellular analyses, we indicate a mechanistic link between a well-described human developmental disorder and the impairment of a 14-3-3/target protein interaction. As a broader implication of these findings, modulating the C-RAFSer(259)/14-3-3 protein-protein interaction with a stabilizing small molecule may yield a novel potential approach for treatment of diseases resulting from an overactive Ras-RAF-MAPK pathway.

PubMed: 20679480
DOI: 10.1128/MCB.01636-09

実験手法

X-RAY DIFFRACTION (1.05 Å)