4.7 Article

Characterization of TRIM16, a member of the fish-specific finTRIM family, in olive flounder Paralichthys olivaceus

期刊

FISH & SHELLFISH IMMUNOLOGY
卷 127, 期 -, 页码 666-671

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ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.fsi.2022.07.003

关键词

TRIM16; finTRIM; Paralichthys olivaceus; VSHV; Expression

资金

  1. National Institute of Fisheries Science (NIFS) , Republic of Korea [R2022027]

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This study isolated a fish-specific finTRIM protein called PoTRIM16 from olive flounder and characterized its composition and function. PoTRIM16 was found to be expressed in various tissues and played an important role in early development. Under viral infection, the expression of PoTRIM16 was downregulated in the liver of olive flounder.
Tripartite motif-containing (TRIM) proteins are conserved throughout the metazoan kingdom, and the TRIM subset finTRIM is highly diversified in fish. We isolated TRIM16 cDNA, a member of the finTRIM family, from the olive flounder Paralichthys olivaceus (PoTRIM16). PoTRIM16 contained a 1,725-bp coding sequence encoding a 574-amino acid polypeptide, which in turn contained a really interesting new gene (RING) finger domain, B-boxtype zinc finger (B-BOX), nuclease SbcCD subunit C (SbcC), structural maintenance of chromosome (SMC prok B), and stonustoxin (SNTX) subunit alpha (SPRY-PRY-SNTX). Multiple alignment of related sequences revealed that PoTRIM16 showed 86.63-97.40% identity with fish orthologues, and a phylogenetic tree was constructed of vertebrates. PoTRIM16 mRNA was detected in all tissues examined; levels were highest in the eye and ovary. PoTRIM16 mRNA expression was investigated during early development. Under VHSV infection, PoTRIM16 mRNA was downregulated in the liver of P. olivaceus. This is the first study to characterize fish-specific finTRIM in P. olivaceus, which may play a role in the immune response against virus infection.

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