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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク LRP1 ： ウィキペディア英語版 LRP1 Low density lipoprotein receptor-related protein 1 (LRP1), also known as alpha-2-macroglobulin receptor (A2MR), apolipoprotein E receptor (APOER) or cluster of differentiation 91 (CD91), is a protein forming a receptor found in the plasma membrane of cells involved in receptor-mediated endocytosis. In humans, the LRP1 protein is encoded by the ''LRP1'' gene.〔(【引用サイトリンク】 url = http://www.ncbi.nlm.nih.gov/gene/4035 )〕 LRP1 is also a key signalling protein and, thus, involved in various biological processes, such as lipoprotein metabolism and cell motility, and diseases, such as neurodegenerative diseases, atherosclerosis, and cancer. ==Structure== The ''LRP1'' gene encodes a 600 kDa precursor protein that is processed by furin in the trans-Golgi complex, resulting in a 515 kDa alpha-chain and an 85 kDa beta-chain associated noncovalently.〔 As a member of the LDLR family, LRP1 contains cysteine-rich complement-type repeats, EGF (gene) repeats, β-propeller domains, a transmembrane domain, and a cytoplasmic domain.〔 The cytoplasmic domain of LRP1 is the alpha-chain, which comprises four ligand-binding domains (numbered I-IV) containing two, eight, ten, and eleven cysteine-rich complement-type repeats, respectively.〔〔〔〔 These repeats bind extracellular matrix proteins, growth factors, proteases, protease inhibitor complexes, and other proteins involved in lipoprotein metabolism.〔〔 Of the four domains, II and IV bind the majority of the protein’s ligands.〔 The EGF repeats and β-propeller domains serve to release ligands in low pH conditions, such as inside endosomes, with the β-propeller postulated to displace the ligand at the ligand binding repeats.〔 The transmembrane domain is the β-chain, which contains a 100-residue cytoplasmic tail. This tail contains two NPxY motifs that are responsible for the protein’s function in endocytosis and signal transduction.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「LRP1」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.