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  • Title: Molecular cloning, characterization and expression analysis of tumor necrosis factor receptor-associated factor 3 (TRAF3) from pearl oyster Pinctada fucata.
    Author: Huang XD, Liu WG, Guan YY, Shi Y, Wang Q, Zhao M, Wu SZ, He MX.
    Journal: Fish Shellfish Immunol; 2012 Sep; 33(3):652-8. PubMed ID: 22796485.
    Abstract:
    TRAF3 is a highly versatile regulator that negatively regulates JNK and alternative nuclear factor-κB signalling, but positively controls type I interferon production. To investigate TRAF3 function in innate immune responses among invertebrate especially mollusk, we characterized TRAF3 (PfTRAF3) from pearl oyster Pinctada fucata, one of the most important bivalve mollusks for seawater pearl production. PfTRAF3 cDNA is 2261 bp with an open reading frame of 1623 bp encoding a putative protein of 541 amino acids. The deduced PfTRAF3 contains a RING finger domain, two TRAF domains with zinc finger domains and a conserved C-terminal meprin and TRAF homology (MATH) domain. Comparison and phylogenetic analysis revealed that PfTRAF3 from mollusk shared a higher identity with Ciona intestinalis TRAF3 from urochordata, Branchiostoma belcheri TRAF3 from cephalochordate, and even TRAF3 from vertebrate than with insect homologues. Furthermore, gene expression analyses suggested that PfTRAF3 was involved in the immune response to Vibrio alginolyticus.
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