Structural basis of the P4B ATPase lipid flippase activity.
Structural basis of the P4B ATPase lipid flippase activity.
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DOI:
10.1038/s41467-021-26273-0
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发表时间:
2021-10-13
影响因子:
16.6
通讯作者:
Li H
中科院分区:
文献类型:
--
作者:
Bai L;Jain BK;You Q;Duan HD;Takar M;Graham TR;Li H
P4 ATPases are lipid flippases that are phylogenetically grouped into P4A, P4B and P4C clades. The P4A ATPases are heterodimers composed of a catalytic α-subunit and accessory β-subunit, and the structures of several heterodimeric flippases have been reported. The S. cerevisiae Neo1 and its orthologs represent the P4B ATPases, which function as monomeric flippases without a β-subunit. It has been unclear whether monomeric flippases retain the architecture and transport mechanism of the dimeric flippases. Here we report the structure of a P4B ATPase, Neo1, in its E1-ATP, E2P-transition, and E2P states. The structure reveals a conserved architecture as well as highly similar functional intermediate states relative to dimeric flippases. Consistently, structure-guided mutagenesis of residues in the proposed substrate translocation path disrupted Neo1’s ability to establish membrane asymmetry. These observations indicate that evolutionarily distant P4 ATPases use a structurally conserved mechanism for substrate transport. The P4 ATPase lipid flippases play a crucial role in membrane biogenesis. Here the authors report the structure of the monomeric P4B ATPase Neo1 in several states, clarifying the mechanism of substrate transport.
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影响因子:
14.8
作者:
Doktorova M;Symons JL;Levental I
通讯作者:
Levental I
DOI:
10.1073/pnas.93.23.12867
发表时间:
1996-11-12
影响因子:
11.1
作者:
Emoto, K;Kobayashi, T;Umeda, M
通讯作者:
Umeda, M
DOI:
10.1107/s0907444909052925
发表时间:
2010-02
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者:
Zwart PH
影响因子:
8.8
作者:
Feng, Zhigang;Zhao, Yupeng;Zou, Yan
通讯作者:
Zou, Yan
DOI:
10.1107/s0907444909042073
发表时间:
2010-01
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Chen VB;Arendall WB 3rd;Headd JJ;Keedy DA;Immormino RM;Kapral GJ;Murray LW;Richardson JS;Richardson DC
通讯作者:
Richardson DC