The protein encoded by this gene contains a RING zinc finger, a motif known to be involved in protein-protein interactions. This protein associates transiently with microtubules, myosin, and titin during muscle sarcomere assembly. It may act as a transient adaptor and plays a regulatory role in the assembly of sarcomeres. Four alternatively spliced transcript variants encoding distinct isoforms have been described.,TRIM55,MURF-2,RNF29,muRF2,Epigenetics & Nuclear Signaling,Cell Biology & Developmental Biology,Ubiquitin,Cardiovascular,Heart,Contractility,TRIM55