The conserved AAA-ATPase Msp1 confers organelle specificity to tail-anchored proteins

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The conserved AAA-ATPase Msp1 confers organelle specificity to tail-anchored proteins.

The accuracy of tail-anchored (TA) protein targeting to the endoplasmic reticulum (ER) depends on the Guided Entry of Tail-Anchored (Get) protein targeting machinery. The fate of TA proteins that become inappropriately inserted into other organelles, such as mitochondria, is unknown. Here, we identify Msp1, a conserved, membrane-anchored AAA-ATPase (ATPase associated with a variety of cellular ...

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The AAA protein Msp1 mediates clearance of excess tail-anchored proteins from the peroxisomal membrane

Msp1 is a conserved AAA ATPase in budding yeast localized to mitochondria where it prevents accumulation of mistargeted tail-anchored (TA) proteins, including the peroxisomal TA protein Pex15. Msp1 also resides on peroxisomes but it remains unknown how native TA proteins on mitochondria and peroxisomes evade Msp1 surveillance. We used live-cell quantitative cell microscopy tools and drug-induci...

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Biogenesis of tail-anchored proteins.

A group of integral membrane proteins, known as C-tail anchored, is defined by the presence of a cytosolic N-terminal domain that is anchored to the phospholipid bilayer by a single segment of hydrophobic amino acids close to the C-terminus. The mode of insertion into membranes of these proteins, many of which play key roles in fundamental intracellular processes, is obligatorily post-translati...

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The tale of tail-anchored proteins

A group of integral membrane proteins, known as C-tail anchored, is defined by the presence of a cytosolic NH2-terminal domain that is anchored to the phospholipid bilayer by a single segment of hydrophobic amino acids close to the COOH terminus. The mode of insertion into membranes of these proteins, many of which play key roles in fundamental intracellular processes, is obligatorily posttrans...

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ژورنال

عنوان ژورنال: Proceedings of the National Academy of Sciences

سال: 2014

ISSN: 0027-8424,1091-6490

DOI: 10.1073/pnas.1405755111