The assembly of β-barrel outer membrane proteins.
The assembly of β-barrel outer membrane proteins.
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DOI:
10.1016/j.mib.2021.01.009
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发表时间:
2021-04
影响因子:
5.4
通讯作者:
Kahne D
中科院分区:
文献类型:
--
作者:
Tomasek D;Kahne D
The outer membranes of Gram-negative bacteria, mitochondria, and chloroplasts contain β-barrel integral membrane proteins. The five-protein β-barrel assembly machine (Bam) accelerates the folding and membrane integration of these proteins. The central component of the machine, BamA, contains a β-barrel domain that can adopt a lateral-open state with its N- and C-terminal β-strands unpaired. Recently, strategies have been developed to capture β-barrel folding intermediates on the Bam complex. Biochemical and structural studies provide support for a model in which substrates assemble at the lateral opening of BamA. In this model, the N-terminal β-strand of BamA captures the C-terminal β-strand of substrates by hydrogen bonding to allow their directional folding and subsequent release into the membrane.
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DOI:
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