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Hsp70 at the membrane: driving protein translocation.


ABSTRACT: Efficient movement of proteins across membranes is required for cell health. The translocation process is particularly challenging when the channel in the membrane through which proteins must pass is narrow-such as those in the membranes of the endoplasmic reticulum and mitochondria. Hsp70 molecular chaperones play roles on both sides of these membranes, ensuring efficient translocation of proteins synthesized on cytosolic ribosomes into the interior of these organelles. The "import motor" in the mitochondrial matrix, which is essential for driving the movement of proteins across the mitochondrial inner membrane, is arguably the most complex Hsp70-based system in the cell.

SUBMITTER: Craig EA 

PROVIDER: S-EPMC5773037 | BioStudies | 2018-01-01

REPOSITORIES: biostudies

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