Involved in membrane remodeling including fission during breakdown of the endoplasmic reticulum (ER) and the tonoplast during leaf senescence and in membrane fusion during vacuole biogenesis in roots. Expressed in leaves, siliques and roots. Accumulates in tissues undergoing senescence (PubMed:20712629, PubMed:22530652). In roots tips, strongly expressed in the cortex undergoing vacuole biogenesis (PubMed:22530652). Belongs to the plant DMP1 protein family.