Abstract
ABSTRACTMacroautophagy/autophagy requires many autophagy-related (ATG) proteins. Most of the ATG genes were identified by genetic screening using simple model organisms. Recently, we performed a forward genetic screen in mammalian cells using the CRISPR-Cas9 system and our autophagic flux reporter GFP-LC3-RFP. One of the identified proteins was TMEM41B, an ER-localized multi-spanning membrane protein. TMEM41B has a characteristic transmembrane domain (the VTT domain), which is also found in VMP1, another protein involved in autophagy. Our results show that TMEM41B and VMP1 are physically and functionally associated.
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