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Published on: August 10, 2021
Intramembrane proteolysis in regulated protein trafficking.
1Zentrum für Molekulare Biologie der Universität Heidelberg (ZMBH), DKFZ-ZMBH Allianz, Im Neuenheimer Feld 282, 69120 Heidelberg, Germany. m.lemberg@zmbh.uni-heidelberg.de
Traffic (Copenhagen, Denmark)
|May 19, 2011
Summary
Regulated intramembrane proteolysis releases bioactive molecules from membranes. This review explores how intramembrane proteases regulate cellular protein trafficking and their control mechanisms in eukaryotes.
Area of Science:
- Biochemistry
- Cell Biology
- Molecular Biology
Background:
- Regulated intramembrane proteolysis (RIP) is a conserved mechanism for releasing bioactive molecules from cellular membranes.
- Intramembrane proteases (IMPs) are present in various eukaryotic organelles, including mitochondria and chloroplasts.
- IMPs are implicated in diverse cellular functions like transcription control, growth factor secretion, and mitophagy.
Purpose of the Study:
- To review emerging principles of how IMPs regulate cellular protein trafficking in eukaryotes.
- To highlight the current knowledge gaps regarding IMP function and regulation.
- To discuss the critical question of how IMP activity is controlled.
Main Methods:
- Literature review of existing research on intramembrane proteolysis.
- Analysis of genomic data for human IMPs.
- Synthesis of findings on IMP roles in diverse cellular processes.
Main Results:
- Genomic annotation predicts 13 distinct IMPs in humans.
- IMPs play roles in diverse cellular functions beyond their initial characterization.
- Significant gaps exist in understanding the specific functions of most IMPs.
Conclusions:
- IMPs are crucial regulators of cellular protein trafficking in eukaryotes.
- Further research is needed to elucidate the specific functions and regulatory mechanisms of the 13 human IMPs.
- Understanding IMP regulation is key to comprehending their roles in cellular homeostasis and disease.
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