The protein encoded by this gene is a member of the dynamin superfamily of GTPases. Members of the dynamin-related;subfamily, including the S. cerevisiae proteins Dnm1 and Vps1, contain the N-terminal tripartite GTPase domain but do;not have the pleckstrin homology or proline-rich domains. This protein establishes mitochondrial morphology through a;role in distributing mitochondrial tubules throughout the cytoplasm. The gene has 3 alternatively spliced transcripts;encoding different isoforms. These transcripts are alternatively polyadenylated.