Post-translational epigenetics: PRMT7 regulates RNA-binding capacity and protein stability to control Leishmania parasite virulence
Post-translational epigenetics: PRMT7 regulates RNA-binding capacity and protein stability to control Leishmania parasite virulence
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翻译后表观遗传学:PRMT7 调节 RNA 结合能力和蛋白质稳定性以控制利什曼原虫寄生虫毒力
DOI:
10.1101/736736
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Ferreira T
中科院分区:
文献类型:
--
作者:
Ferreira T
RNA binding proteins (RBPs) are the primary gene regulators in kinetoplastids as transcriptional control is nearly absent, makingLeishmaniaan exceptional model for investigating methylation of non-histone substrates. Arginine methylation is an evolutionarily conserved protein modification catalyzed by Protein aRginine MethylTransferases (PRMTs). The chromatin modifier PRMT7 is the only Type III PRMT found in higher eukaryotes and a restricted number of unicellular eukaryotes. InLeishmania major, PRMT7 is a cytoplasmic protein implicit in pathogenesis with unknown substrates. Using comparative methyl-SILAC proteomics for the first time in protozoa, we identified 40 putative targets, including 17 RBPs hypomethylated upon PRMT7 knockout. PRMT7 can modify Alba3 and RBP16trans-regulators (mammalian RPP25 and YBX2 homologs, respectively) as direct substratesin vitro. The absence of PRMT7 levelsin vivoselectively reduces Alba3 mRNA-binding capacity to specific target transcripts and can impact the relative stability of RBP16 in the cytoplasm. RNA immunoprecipitation analyses demonstrate PRMT7-dependent methylation promotes Alba3 association with select target transcripts and stability ofδ-amastinsurface antigen. These results highlight a novel role for PRMT7-mediated arginine methylation upon RBP substrates, suggesting a regulatory pathway controlling gene expression and virulence inLeishmania. This work introducesLeishmaniaPRMTs as epigenetic regulators of mRNA metabolism with mechanistic insight into the functional manipulation of RBPs by methylation.
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影响因子:
6.4
作者:
Dumetz F;Imamura H;Sanders M;Seblova V;Myskova J;Pescher P;Vanaerschot M;Meehan CJ;Cuypers B;De Muylder G;Späth GF;Bussotti G;Vermeesch JR;Berriman M;Cotton JA;Volf P;Dujardin JC;Domagalska MA
通讯作者:
Domagalska MA
影响因子:
14.9
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Fritz M;Vanselow J;Sauer N;Lamer S;Goos C;Siegel TN;Subota I;Schlosser A;Carrington M;Kramer S
通讯作者:
Kramer S
影响因子:
3.3
作者:
Krüger T;Hofweber M;Kramer S
通讯作者:
Kramer S
影响因子:
6.7
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de Paiva RM;Grazielle-Silva V;Cardoso MS;Nakagaki BN;Mendonça-Neto RP;Canavaci AM;Souza Melo N;Martinelli PM;Fernandes AP;daRocha WD;Teixeira SM
通讯作者:
Teixeira SM
影响因子:
16
作者:
Zheng, Shunsheng;Moehlenbrink, Jutta;Lu, Yi-Chien;Zalmas, Lykourgos-Panagiotis;Sagum, Carl A.;Carr, Simon;McGouran, Joanna F.;Alexander, Leila;Fedorov, Oleg;Munro, Shonagh;Kessler, Benedikt;Bedford, Mark T.;Yu, Qiang;La Thangue, Nicholas B.
通讯作者:
La Thangue, Nicholas B.