Disruption of the RNA exosome reveals the hidden face of the malaria parasite transcriptome.
Disruption of the RNA exosome reveals the hidden face of the malaria parasite transcriptome.
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RNA外泌体的破坏揭示了疟疾寄生虫转录组的隐藏面目
DOI:
10.1080/15476286.2018.1517014
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发表时间:
2018
期刊:
影响因子:
4.1
通讯作者:
Zhang Q
中科院分区:
文献类型:
--
作者:
Droll D;Wei G;Guo G;Fan Y;Baumgarten S;Zhou Y;Xiao Y;Scherf A;Zhang Q
Antisense transcription emerges as a key regulator of important biological processes in the human malaria parasite Plasmodium falciparum. RNA-processing factors, however, remain poorly characterized in this pathogen. Here, we purified the multiprotein RNA exosome complex of malaria parasites by affinity chromatography, using HA-tagged PfRrp4 and PfDis3 as the ligands. Seven distinct core exosome subunits (PfRrp41, PfMtr3, PfRrp42, PfRrp45, PfRrp4, PfRrp40, PfCsl4) and two exoribonuclease proteins PfRrp6 and PfDis3 are identified by mass spectrometry. Western blot analysis detects Dis3 and Rrp4 predominantly in the cytoplasmic fraction during asexual blood stage development. An inducible gene knock out of the PfDis3 subunit reveals the upregulation of structural and coding RNA, but the vast majority belongs to antisense RNA. Furthermore, we detect numerous types of cryptic unstable transcripts (CUTs) linked to virulence gene families including antisense RNA in the rif gene family. Our work highlights the limitations of steady-state RNA analysis to predict transcriptional activity and link the RNA surveillance machinery directly with post-transcriptional control and gene expression in malaria parasites.
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DOI:
10.1093/bioinformatics/btu638
发表时间:
2015-01-15
期刊:
Bioinformatics (Oxford, England)
影响因子:
--
作者:
Anders S;Pyl PT;Huber W
通讯作者:
Huber W
影响因子:
12.3
作者:
Shock JL;Fischer KF;DeRisi JL
通讯作者:
DeRisi JL
影响因子:
4.8
作者:
Calderwood, MS;Gannoun-Zaki, L;Deitsch, KW
通讯作者:
Deitsch, KW
影响因子:
64.5
作者:
Halbach, Felix;Reichelt, Peter;Conti, Elena
通讯作者:
Conti, Elena
影响因子:
46.9
作者:
Ghorbal, Mehdi;Gorman, Molly;Lopez-Rubio, Jose-Juan
通讯作者:
Lopez-Rubio, Jose-Juan