This entry represents a domain found in mitochondrial fission factor (Mff) and at the C terminus of FATE1. This domain has a predicted transmembrane segment preceded by a coiled-coil region. Despite their similarity in the C terminus, FATE1 lacks a Mff-similar N-terminal domain that is essential for interaction of Mff with the dynamin-related GTPase Drp1, which mediates mitochondrial fission. Instead, FATE1 is involved in the regulation of ER-mitochondria distance and Ca(2+) uptake by mitochondria [].
This entry represents the mitochondrial dynamics protein MID49/MID51. Most members of this protein family contain a Mab-21 domain and are found in chordates.In humans, MID49 and MID51 are outer membrane proteins involved in the regulation of mitochondrial organisation and required for mitochondrial fission by promoting the recruitment and association of the fission mediator dynamin-related protein 1 (DNM1L) to the mitochondrial surface independently of the mitochondrial fission FIS1 and MFF proteins. They also regulate DNM1L GTPase activity [, , , , ]. Deregulation of these proteins has been linked to human diseases such as pulmonary arterial hypertension [].
