FIS1 Mitochondria fission 1 protein Has a role in mitochondrial fission. Has a role in outer membrane fission but not matrix separation (By similarity). FIS1_TUBBO MPSDNLPHAVDAESPLKEAELQVLRNQYEKEGQFVGVQTKFNYAWGLIKSDKRPEQQMGVRLLTDIFRDHTERRRECLYYLALGNYKLGNYAEARRYNDRLLENEPANLQSQSLRGLIDDKVAKEGMLGVAIISGVALAAGLVGSALWRGMSRRR 155