GTPase tethering membranes through formation of trans-homooligomers and mediating homotypic fusion of endoplasmic reticulum membranes. Functions in endoplasmic reticulum tubular network biogenesis .
Endoplasmic reticulum membrane ; Multi-pass membrane protein . Localizes at endoplasmic reticulum (ER) three-way tubular junctions (PubMed:27619977). .
Expressed in peripheral tissues (at protein level).
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