1SV4

Crystal Structure of Yan-SAM

1SV4 の概要

• エントリーDOI: 10.2210/pdb1sv4/pdb
• 関連するPDBエントリー: 1sv0
• 分子名称: Ets DNA-binding protein pokkuri (2 entities in total)
• 機能のキーワード: alpha-helix, 3(10)-helix, transcription
• 由来する生物種: Drosophila melanogaster (fruit fly)
• 細胞内の位置: Nucleus: Q01842
• タンパク質・核酸の鎖数: 2
• 化学式量合計: 20039.18

構造登録者

Qiao, F.,Song, H.,Kim, C.A.,Sawaya, M.R.,Hunter, J.B.,Gingery, M.,Rebay, I.,Courey, A.J.,Bowie, J.U. (登録日: 2004-03-27, 公開日: 2004-07-27, 最終更新日: 2023-08-23)

主引用文献

Qiao, F.,Song, H.,Kim, C.A.,Sawaya, M.R.,Hunter, J.B.,Gingery, M.,Rebay, I.,Courey, A.J.,Bowie, J.U.
Derepression by depolymerization; structural insights into the regulation of yan by mae.
Cell(Cambridge,Mass.), 118:163-173, 2004

PubMed Abstract: Yan, an ETS family transcriptional repressor, is regulated by receptor tyrosine kinase signaling via the Ras/MAPK pathway. Phosphorylation and downregulation of Yan is facilitated by a protein called Mae. Yan and Mae interact through their SAM domains. We find that repression by Yan requires the formation of a higher order structure mediated by Yan-SAM polymerization. Moreover, a crystal structure of the Yan-SAM/Mae-SAM complex shows that Mae-SAM specifically recognizes a surface on Yan-SAM that is also required for Yan-SAM polymerization. Mae-SAM binds to Yan-SAM with approximately 1000-fold higher affinity than Yan-SAM binds to itself and can effectively depolymerize Yan-SAM. Mutations on Mae that specifically disrupt its SAM domain-dependent interactions with Yan disable the derepression function of Mae in vivo. Depolymerization of Yan by Mae represents a novel mechanism of transcriptional control that sensitizes Yan for regulation by receptor tyrosine kinases.

PubMed: 15260987
DOI: 10.1016/j.cell.2004.07.010

実験手法

X-RAY DIFFRACTION (2.15 Å)