cellular response to cholesterol / cholesterol binding / negative regulation of BMP signaling pathway / positive regulation of TORC1 signaling / cellular response to amino acid starvation / transmembrane transport / cognition / intracellular signal transduction / lysosomal membrane / extracellular exosome 類似検索 - 分子機能
Integral membrane protein GPR155, DEP domain / Membrane transport protein / Membrane transport protein / : / Domain found in Dishevelled, Egl-10, and Pleckstrin (DEP) / DEP domain profile. / Domain found in Dishevelled, Egl-10, and Pleckstrin / DEP domain / Winged helix DNA-binding domain superfamily / Winged helix-like DNA-binding domain superfamily 類似検索 - ドメイン・相同性
Lysosomal cholesterol signaling protein 類似検索 - 構成要素
ジャーナル: Nat Struct Mol Biol / 年: 2025 タイトル: Cryo-EM reveals cholesterol binding in the lysosomal GPCR-like protein LYCHOS. 著者: Jie Zhao / Qingya Shen / Xihao Yong / Xin Li / Xiaowen Tian / Suyue Sun / Zheng Xu / Xiaoyu Zhang / Lu Zhang / Hao Yang / Zhenhua Shao / Haoxing Xu / Yiyang Jiang / Yan Zhang / Wei Yan / 要旨: Cholesterol plays a pivotal role in modulating the activity of mechanistic target of rapamycin complex 1 (mTOR1), thereby regulating cell growth and metabolic homeostasis. LYCHOS, a lysosome- ...Cholesterol plays a pivotal role in modulating the activity of mechanistic target of rapamycin complex 1 (mTOR1), thereby regulating cell growth and metabolic homeostasis. LYCHOS, a lysosome-localized G-protein-coupled receptor-like protein, emerges as a cholesterol sensor and is capable of transducing the cholesterol signal to affect the mTORC1 function. However, the precise mechanism by which LYCHOS recognizes cholesterol remains unknown. Here, using cryo-electron microscopy, we determined the three-dimensional structural architecture of LYCHOS in complex with cholesterol molecules, revealing a unique arrangement of two sequential structural domains. Through a comprehensive analysis of this structure, we elucidated the specific structural features of these two domains and their collaborative role in the process of cholesterol recognition by LYCHOS.