Hfq Globally Binds and Destabilizes sRNAs and mRNAs in <named-content content-type="genus-species">Yersinia pestis</named-content>

ABSTRACT Hfq is a ubiquitous Sm-like RNA-binding protein in bacteria involved in physiological fitness and pathogenesis, while its in vivo binding nature remains elusive. Here we reported genome-wide Hfq-bound RNAs in Yersinia pestis, a causative agent of plague, by using cross-linking immunoprecipi...

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Autores principales:	Yanping Han, Dong Chen, Yanfeng Yan, Xiaofang Gao, Zizhong Liu, Yaqiang Xue, Yi Zhang, Ruifu Yang
Formato:	article
Lenguaje:	EN
Publicado:	American Society for Microbiology 2019
Materias:	CLIP-seq Hfq RNA degradation Y. pestis sRNA Microbiology QR1-502
Acceso en línea:	https://doaj.org/article/86d983a97fb647bd89f323fdd78003fa
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spelling	oai:doaj.org-article:86d983a97fb647bd89f323fdd78003fa2021-12-02T19:47:38ZHfq Globally Binds and Destabilizes sRNAs and mRNAs in <named-content content-type="genus-species">Yersinia pestis</named-content>10.1128/mSystems.00245-192379-5077https://doaj.org/article/86d983a97fb647bd89f323fdd78003fa2019-08-01T00:00:00Zhttps://journals.asm.org/doi/10.1128/mSystems.00245-19https://doaj.org/toc/2379-5077ABSTRACT Hfq is a ubiquitous Sm-like RNA-binding protein in bacteria involved in physiological fitness and pathogenesis, while its in vivo binding nature remains elusive. Here we reported genome-wide Hfq-bound RNAs in Yersinia pestis, a causative agent of plague, by using cross-linking immunoprecipitation coupled with deep sequencing (CLIP-seq) approach. We show that the Hfq binding density is enriched in more than 80% mRNAs of Y. pestis and that Hfq also globally binds noncoding small RNAs (sRNAs) encoded by the intergenic, antisense, and 3′ regions of mRNAs. An Hfq U-rich stretch is highly enriched in sRNAs, while motifs partially complementary to AGAAUAA and GGGGAUUA are enriched in both mRNAs and sRNAs. Hfq-binding motifs are enriched at both terminal sites and in the gene body of mRNAs. Surprisingly, a large fraction of the sRNA and mRNA regions bound by Hfq and those downstream are destabilized, likely via a 5′P-activated RNase E degradation pathway, which is consistent with a model in which Hfq facilitates sRNA-mRNA base pairing and the coupled degradation in Y. pestis. These results together have presented a high-quality Hfq-RNA interaction map in Y. pestis, which should be important for further deciphering the regulatory role of Hfq-sRNAs in Y. pestis. IMPORTANCE Discovered in 1968 as an Escherichia coli host factor that was essential for replication of the bacteriophage Qβ, the Hfq protein is a ubiquitous and highly abundant RNA-binding protein in many bacteria. With the assistance of Hfq, small RNAs in bacteria play important roles in regulating the stability and translation of mRNAs by base pairing. In this study, we want to elucidate the Hfq-assisted sRNA-mRNA regulation in Yersinia pestis. A global map of Hfq interaction sites in Y. pestis was obtained by sequencing cDNAs converted from the Hfq-bound RNA fragments using UV cross-linking coupled immunoprecipitation technology. We demonstrate that Hfq could bind to hundreds of sRNAs and the majority of mRNAs in Y. pestis. The enriched binding motifs in sRNAs and mRNAs are complementary to each other, suggesting a general base-pairing mechanism for sRNA-mRNA interaction. The Hfq-bound sRNA and mRNA regions were both destabilized. The results suggest that Hfq binding facilitates sRNA-mRNA base pairing and coordinates their degradation, which might enable Hfq to surveil the homeostasis of most mRNAs in bacteria. Author Video: An author video summary of this article is available.Yanping HanDong ChenYanfeng YanXiaofang GaoZizhong LiuYaqiang XueYi ZhangRuifu YangAmerican Society for MicrobiologyarticleCLIP-seqHfqRNA degradationY. pestissRNAMicrobiologyQR1-502ENmSystems, Vol 4, Iss 4 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	CLIP-seq Hfq RNA degradation Y. pestis sRNA Microbiology QR1-502
spellingShingle	CLIP-seq Hfq RNA degradation Y. pestis sRNA Microbiology QR1-502 Yanping Han Dong Chen Yanfeng Yan Xiaofang Gao Zizhong Liu Yaqiang Xue Yi Zhang Ruifu Yang Hfq Globally Binds and Destabilizes sRNAs and mRNAs in <named-content content-type="genus-species">Yersinia pestis</named-content>
description	ABSTRACT Hfq is a ubiquitous Sm-like RNA-binding protein in bacteria involved in physiological fitness and pathogenesis, while its in vivo binding nature remains elusive. Here we reported genome-wide Hfq-bound RNAs in Yersinia pestis, a causative agent of plague, by using cross-linking immunoprecipitation coupled with deep sequencing (CLIP-seq) approach. We show that the Hfq binding density is enriched in more than 80% mRNAs of Y. pestis and that Hfq also globally binds noncoding small RNAs (sRNAs) encoded by the intergenic, antisense, and 3′ regions of mRNAs. An Hfq U-rich stretch is highly enriched in sRNAs, while motifs partially complementary to AGAAUAA and GGGGAUUA are enriched in both mRNAs and sRNAs. Hfq-binding motifs are enriched at both terminal sites and in the gene body of mRNAs. Surprisingly, a large fraction of the sRNA and mRNA regions bound by Hfq and those downstream are destabilized, likely via a 5′P-activated RNase E degradation pathway, which is consistent with a model in which Hfq facilitates sRNA-mRNA base pairing and the coupled degradation in Y. pestis. These results together have presented a high-quality Hfq-RNA interaction map in Y. pestis, which should be important for further deciphering the regulatory role of Hfq-sRNAs in Y. pestis. IMPORTANCE Discovered in 1968 as an Escherichia coli host factor that was essential for replication of the bacteriophage Qβ, the Hfq protein is a ubiquitous and highly abundant RNA-binding protein in many bacteria. With the assistance of Hfq, small RNAs in bacteria play important roles in regulating the stability and translation of mRNAs by base pairing. In this study, we want to elucidate the Hfq-assisted sRNA-mRNA regulation in Yersinia pestis. A global map of Hfq interaction sites in Y. pestis was obtained by sequencing cDNAs converted from the Hfq-bound RNA fragments using UV cross-linking coupled immunoprecipitation technology. We demonstrate that Hfq could bind to hundreds of sRNAs and the majority of mRNAs in Y. pestis. The enriched binding motifs in sRNAs and mRNAs are complementary to each other, suggesting a general base-pairing mechanism for sRNA-mRNA interaction. The Hfq-bound sRNA and mRNA regions were both destabilized. The results suggest that Hfq binding facilitates sRNA-mRNA base pairing and coordinates their degradation, which might enable Hfq to surveil the homeostasis of most mRNAs in bacteria. Author Video: An author video summary of this article is available.
format	article
author	Yanping Han Dong Chen Yanfeng Yan Xiaofang Gao Zizhong Liu Yaqiang Xue Yi Zhang Ruifu Yang
author_facet	Yanping Han Dong Chen Yanfeng Yan Xiaofang Gao Zizhong Liu Yaqiang Xue Yi Zhang Ruifu Yang
author_sort	Yanping Han
title	Hfq Globally Binds and Destabilizes sRNAs and mRNAs in <named-content content-type="genus-species">Yersinia pestis</named-content>
title_short	Hfq Globally Binds and Destabilizes sRNAs and mRNAs in <named-content content-type="genus-species">Yersinia pestis</named-content>
title_full	Hfq Globally Binds and Destabilizes sRNAs and mRNAs in <named-content content-type="genus-species">Yersinia pestis</named-content>
title_fullStr	Hfq Globally Binds and Destabilizes sRNAs and mRNAs in <named-content content-type="genus-species">Yersinia pestis</named-content>
title_full_unstemmed	Hfq Globally Binds and Destabilizes sRNAs and mRNAs in <named-content content-type="genus-species">Yersinia pestis</named-content>
title_sort	hfq globally binds and destabilizes srnas and mrnas in <named-content content-type="genus-species">yersinia pestis</named-content>
publisher	American Society for Microbiology
publishDate	2019
url	https://doaj.org/article/86d983a97fb647bd89f323fdd78003fa
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Hfq Globally Binds and Destabilizes sRNAs and mRNAs in <named-content content-type="genus-species">Yersinia pestis</named-content>

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