Preprint Review Version 1 This version is not peer-reviewed

Non-Coding RNAs in Bacteria

Version 1 : Received: 25 October 2018 / Approved: 30 October 2018 / Online: 30 October 2018 (08:48:47 CET)

How to cite: Carvalho Garcia, A.; Pereira dos Santos, V.L.; Cristina Santos Cavalcanti, T.; Martins Collaço, L.; José Taborda de Messias, I.; Graf, H. Non-Coding RNAs in Bacteria. Preprints 2018, 2018100714 (doi: 10.20944/preprints201810.0714.v1). Carvalho Garcia, A.; Pereira dos Santos, V.L.; Cristina Santos Cavalcanti, T.; Martins Collaço, L.; José Taborda de Messias, I.; Graf, H. Non-Coding RNAs in Bacteria. Preprints 2018, 2018100714 (doi: 10.20944/preprints201810.0714.v1).

Abstract

Genes encoding regulatory RNAs known as short RNAs (sRNAs) or non-coding sRNAs (ncRNAs), modulate physiological responses through different mechanisms, through RNA-RNA interaction or RNA-protein interaction. These molecules transcribed in trans and in cis relative to the target RNA. They are located between the coding regions of proteins, i.e., in the intergenic regions of the genome and show signals of promoters and termini sequences generally Rho-independent. The size of the ncRNAs genes ranges from ~ 50 to ~ 500 nucleotides and several transcripts are processed by RNase with smaller end products, which modulate physiological responses through different mechanisms, by RNA-RNA interaction or RNA-protein interactions and some interactions may be stabilized by the Hfq chaperone. The Riboswitches constitute another class of ncRNAs, located in the 5'UTR region of an mRNA that promote transcriptional regulation through their interaction with a linker molecule. Recently, in prokaryotes, CRISPR (Clustered Regularly Interspaced Short Palindromic Repeats) regions have described, which repeats of sequences of palindromic bases are. Each replicate consists of short segments of "spacer DNA" from exposures prior to a bacteriophage virus or exogenous plasmid. The CRISPR system consists of an immune system of resistance to exogenous molecules.

Subject Areas

ncRNA; cis-encoded ncRNA; trans-encoded ncRNA; riboswitch; CRISPR.

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