National Natural Science Foundation of China (NSFC)
31622021
中国
National Natural Science Foundation of China (NSFC)
91857000
中国
National Natural Science Foundation of China (NSFC)
31821091
中国
National Natural Science Foundation of China (NSFC)
31870833
中国
引用
ジャーナル: Nat Commun / 年: 2020 タイトル: Structure of voltage-modulated sodium-selective NALCN-FAM155A channel complex. 著者: Yunlu Kang / Jing-Xiang Wu / Lei Chen / 要旨: Resting membrane potential determines the excitability of the cell and is essential for the cellular electrical activities. The NALCN channel mediates sodium leak currents, which positively adjust ...Resting membrane potential determines the excitability of the cell and is essential for the cellular electrical activities. The NALCN channel mediates sodium leak currents, which positively adjust resting membrane potential towards depolarization. The NALCN channel is involved in several neurological processes and has been implicated in a spectrum of neurodevelopmental diseases. Here, we report the cryo-EM structure of rat NALCN and mouse FAM155A complex to 2.7 Å resolution. The structure reveals detailed interactions between NALCN and the extracellular cysteine-rich domain of FAM155A. We find that the non-canonical architecture of NALCN selectivity filter dictates its sodium selectivity and calcium block, and that the asymmetric arrangement of two functional voltage sensors confers the modulation by membrane potential. Moreover, mutations associated with human diseases map to the domain-domain interfaces or the pore domain of NALCN, intuitively suggesting their pathological mechanisms.
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2020年8月20日
登録サイト: PDBJ / 処理サイト: PDBJ
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2020年11月18日
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2020年11月18日
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2020年11月18日
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2020年11月18日
Data content type: FSC / Data content type: FSC / Provider: repository / タイプ: Initial release
改定 1.0
2020年11月18日
Data content type: Image / Data content type: Image / Provider: repository / タイプ: Initial release
改定 1.0
2020年11月18日
Data content type: Primary map / Data content type: Primary map / Provider: repository / タイプ: Initial release
改定 1.0
2020年11月18日
Data content type: FSC / Data content type: FSC / Provider: repository / タイプ: Initial release
改定 1.0
2020年11月18日
Data content type: Image / Data content type: Image / Provider: repository / タイプ: Initial release
改定 1.0
2020年11月18日
Data content type: Primary map / Data content type: Primary map / Provider: repository / タイプ: Initial release
Data content type: EM metadata / Data content type: EM metadata / EM metadata / Group: Data processing / Experimental summary / Data content type: EM metadata / EM metadata / カテゴリ: em_admin / em_software / Data content type: EM metadata / EM metadata / Item: _em_admin.last_update / _em_software.name
Sodiumleakchannelnon-selectiveprotein / Four domain-type voltage-gated ion channel alpha-1 subunit / Rb21-channel / Voltage gated channel- ...Four domain-type voltage-gated ion channel alpha-1 subunit / Rb21-channel / Voltage gated channel-like protein 1