Tripartite motif-containing protein 3 is a protein that in humans is encoded by the TRIM3gene.[5][6]
The protein encoded by this gene is a member of the tripartite motif (TRIM) family, also called the 'RING-B-box-coiled-coil' (RBCC) subgroup of RING finger proteins. The TRIM motif includes three zinc-binding domains, a RING, a B-box type 1 and a B-box type 2, and a coiled-coil region. This protein localizes to cytoplasmic filaments. It is similar to a rat protein which is a specific partner for the tail domain of myosin V, a class of myosins which are involved in the targeted transport of organelles. The rat protein can also interact with alpha-actinin-4. Thus it is suggested that this human protein may play a role in myosin V-mediated cargo transport. Alternatively spliced transcript variants encoding the same isoform have been identified.[6]
^El-Husseini AE, Kwasnicka D, Yamada T, Hirohashi S, Vincent SR (January 2000). "BERP, a novel ring finger protein, binds to alpha-actinin-4". Biochemical and Biophysical Research Communications. 267 (3): 906–911. doi:10.1006/bbrc.1999.2045. PMID10673389.
El-Husseini AE, Kwasnicka D, Yamada T, Hirohashi S, Vincent SR (January 2000). "BERP, a novel ring finger protein, binds to alpha-actinin-4". Biochemical and Biophysical Research Communications. 267 (3): 906–911. doi:10.1006/bbrc.1999.2045. PMID10673389.
El-Husseini AE, Fretier P, Vincent SR (February 2001). "Cloning and characterization of a gene (RNF22) encoding a novel brain expressed ring finger protein (BERP) that maps to human chromosome 11p15.5". Genomics. 71 (3): 363–367. doi:10.1006/geno.2000.6452. PMID11170753.