MEMBRANE PROTEIN / ER membrane / Transmembrane helices / Translocation
機能・相同性
機能・相同性情報
ABC-type manganese transporter activity / extraction of mislocalized protein from ER membrane / membrane protein dislocase activity / Translocases; Catalysing the translocation of amino acids and peptides; Linked to the hydrolysis of a nucleoside triphosphate / P-type ion transporter activity / ATPase-coupled monoatomic cation transmembrane transporter activity / Ion transport by P-type ATPases / transmembrane transport / intracellular calcium ion homeostasis / protein transport ...ABC-type manganese transporter activity / extraction of mislocalized protein from ER membrane / membrane protein dislocase activity / Translocases; Catalysing the translocation of amino acids and peptides; Linked to the hydrolysis of a nucleoside triphosphate / P-type ion transporter activity / ATPase-coupled monoatomic cation transmembrane transporter activity / Ion transport by P-type ATPases / transmembrane transport / intracellular calcium ion homeostasis / protein transport / monoatomic ion transmembrane transport / endoplasmic reticulum membrane / ATP hydrolysis activity / ATP binding / metal ion binding / membrane 類似検索 - 分子機能
ジャーナル: Sci Adv / 年: 2025 タイトル: ATP13A1 engages SEC61 to facilitate substrate-specific translocation. 著者: Xiaoyan Yang / Yi Li / Chengxi Yang / Tingting Li / Zhiyu Fang / Zhigang Feng / Jun Liao / Yan Zou / 要旨: The accurate targeting of proteins to their designated cellular compartments is essential for maintaining proper cellular architecture and function. However, interpreting and sorting the highly ...The accurate targeting of proteins to their designated cellular compartments is essential for maintaining proper cellular architecture and function. However, interpreting and sorting the highly variable targeting sequences in secreted and membrane proteins present a substantial challenge for achieving precise localization within the secretory pathway. In this study, we demonstrate that atypical signal sequences, characterized by high hydrophobicity and/or the absence of characteristic charges, are recognized by the signal recognition particle and targeted to the endoplasmic reticulum in a reverse orientation. These misoriented signal sequences are subsequently dislocated by the P5A-ATPase ATP13A1 and delivered to SEC61 for further translocation. Using cryo-electron microscopy, we determined the structures of human ATP13A1 in multiple conformations (3.40- to 3.87-angstrom resolution), revealing key residues within its substrate-binding pocket that engage signal sequences through polar interactions. Collectively, our findings elucidate a comprehensive, substrate-specific translocation pathway that ensures both high efficiency and fidelity in protein subcellular localization.
履歴
登録
2024年8月27日
登録サイト: PDBJ / 処理サイト: PDBC
改定 1.0
2025年6月11日
Provider: repository / タイプ: Initial release
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2025年6月11日
Data content type: EM metadata / Data content type: EM metadata / Provider: repository / タイプ: Initial release
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2025年6月11日
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2025年6月11日
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2025年6月11日
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2025年6月11日
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2025年6月11日
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Data content type: EM metadata / Data content type: EM metadata / EM metadata / EM metadata Group: Data processing / Database references / Experimental summary Data content type: EM metadata / EM metadata ...EM metadata / EM metadata / EM metadata / EM metadata カテゴリ: citation / citation_author ...citation / citation_author / em_admin / em_software Data content type: EM metadata / EM metadata ...EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata Item: _citation.page_first / _citation.page_last ..._citation.page_first / _citation.page_last / _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.identifier_ORCID / _em_admin.last_update / _em_software.name
分子量: 129082.664 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: ATP13A1, ATP13A, KIAA1825, CGI-152 / プラスミド: pEGBacMam / 細胞株 (発現宿主): HEK293 GnTI- / 発現宿主: Homo sapiens (ヒト) 参照: UniProt: Q9HD20, Translocases; Catalysing the translocation of amino acids and peptides; Linked to the hydrolysis of a nucleoside triphosphate
#2: タンパク質・ペプチド
Putativeendogenoussubstrate
分子量: 1890.321 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 細胞株 (発現宿主): HEK293 GnTI- / 発現宿主: Homo sapiens (ヒト)
Has protein modification
N
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実験情報
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実験
実験
手法: 電子顕微鏡法
EM実験
試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法
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試料調製
構成要素
名称: ATP13A1 with putative substrate in nanodiscs / タイプ: COMPLEX 詳細: ATP13A1 purified in BeF3- buffer be reconstructed into nanodiscs Entity ID: all / 由来: MULTIPLE SOURCES