Structural highlights
Function
TUT7_HUMAN Uridylyltransferase that mediates the terminal uridylation of mRNAs with short (less than 25 nucleotides) poly(A) tails, hence facilitating global mRNA decay (PubMed:19703396, PubMed:25480299). Involved in microRNA (miRNA)-induced gene silencing through uridylation of deadenylated miRNA targets (PubMed:25480299). Also acts as a suppressor of miRNA biogenesis by mediating the terminal uridylation of some miRNA precursors, including that of let-7 (pre-let-7). Uridylated pre-let-7 RNA is not processed by Dicer and undergo degradation. Pre-let-7 uridylation is strongly enhanced in the presence of LIN28A (PubMed:22898984). Due to functional redundancy between ZCCHC6 and ZCCHC11, the identification of the specific role of each of these proteins is difficult.[1] [2] [3]
References
- ↑ Heo I, Joo C, Kim YK, Ha M, Yoon MJ, Cho J, Yeom KH, Han J, Kim VN. TUT4 in concert with Lin28 suppresses microRNA biogenesis through pre-microRNA uridylation. Cell. 2009 Aug 21;138(4):696-708. doi: 10.1016/j.cell.2009.08.002. PMID:19703396 doi:http://dx.doi.org/10.1016/j.cell.2009.08.002
- ↑ Thornton JE, Chang HM, Piskounova E, Gregory RI. Lin28-mediated control of let-7 microRNA expression by alternative TUTases Zcchc11 (TUT4) and Zcchc6 (TUT7). RNA. 2012 Oct;18(10):1875-85. doi: 10.1261/rna.034538.112. Epub 2012 Aug 16. PMID:22898984 doi:http://dx.doi.org/10.1261/rna.034538.112
- ↑ Lim J, Ha M, Chang H, Kwon SC, Simanshu DK, Patel DJ, Kim VN. Uridylation by TUT4 and TUT7 marks mRNA for degradation. Cell. 2014 Dec 4;159(6):1365-76. doi: 10.1016/j.cell.2014.10.055. PMID:25480299 doi:http://dx.doi.org/10.1016/j.cell.2014.10.055
