PMID- 33193265 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201117 IS - 1664-302X (Print) IS - 1664-302X (Electronic) IS - 1664-302X (Linking) VI - 11 DP - 2020 TI - The Clustered Regularly Interspaced Short Palindromic Repeat System and Argonaute: An Emerging Bacterial Immunity System for Defense Against Natural Transformation? PG - 593301 LID - 10.3389/fmicb.2020.593301 [doi] LID - 593301 AB - Clustered regularly interspaced short palindromic repeat (CRISPR) systems and prokaryotic Argonaute proteins (Agos) have been shown to defend bacterial and archaeal cells against invading nucleic acids. Indeed, they are important elements for inhibiting horizontal gene transfer between bacterial and archaeal cells. The CRISPR system employs an RNA-guide complex to target invading DNA or RNA, while Agos target DNA using single stranded DNA or RNA as guides. Thus, the CRISPR and Agos systems defend against exogenous nucleic acids by different mechanisms. It is not fully understood how antagonization of these systems occurs during natural transformation, wherein exogenous DNA enters a host cell as single stranded DNA and is then integrated into the host genome. In this review, we discuss the functions and mechanisms of the CRISPR system and Agos in cellular defense against natural transformation. CI - Copyright (c) 2020 Liu, Huang, Wang, Zhu, Jia, Chen, Zhang, Pan and Cheng. FAU - Liu, Mafeng AU - Liu M AD - Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, China. AD - Research Centre of Avian Disease, College of Veterinary Medicine of Sichuan Agricultural University, Chengdu, China. AD - Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, China. FAU - Huang, Mi AU - Huang M AD - Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, China. AD - Research Centre of Avian Disease, College of Veterinary Medicine of Sichuan Agricultural University, Chengdu, China. AD - Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, China. FAU - Wang, Mingshu AU - Wang M AD - Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, China. AD - Research Centre of Avian Disease, College of Veterinary Medicine of Sichuan Agricultural University, Chengdu, China. AD - Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, China. FAU - Zhu, Dekang AU - Zhu D AD - Research Centre of Avian Disease, College of Veterinary Medicine of Sichuan Agricultural University, Chengdu, China. AD - Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, China. FAU - Jia, Renyong AU - Jia R AD - Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, China. AD - Research Centre of Avian Disease, College of Veterinary Medicine of Sichuan Agricultural University, Chengdu, China. AD - Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, China. FAU - Chen, Shun AU - Chen S AD - Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, China. AD - Research Centre of Avian Disease, College of Veterinary Medicine of Sichuan Agricultural University, Chengdu, China. AD - Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, China. FAU - Zhang, Ling AU - Zhang L AD - Research Centre of Avian Disease, College of Veterinary Medicine of Sichuan Agricultural University, Chengdu, China. AD - Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, China. FAU - Pan, Leichang AU - Pan L AD - Research Centre of Avian Disease, College of Veterinary Medicine of Sichuan Agricultural University, Chengdu, China. AD - Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, China. FAU - Cheng, Anchun AU - Cheng A AD - Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, China. AD - Research Centre of Avian Disease, College of Veterinary Medicine of Sichuan Agricultural University, Chengdu, China. AD - Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, China. LA - eng PT - Journal Article PT - Review DEP - 20201022 PL - Switzerland TA - Front Microbiol JT - Frontiers in microbiology JID - 101548977 PMC - PMC7642515 OTO - NOTNLM OT - Argonaute proteins OT - Clustered regularly interspaced short palindromic repeat-Cas OT - bacterial immunity system OT - natural transformation OT - ssDNA EDAT- 2020/11/17 06:00 MHDA- 2020/11/17 06:01 PMCR- 2020/10/22 CRDT- 2020/11/16 08:47 PHST- 2020/08/11 00:00 [received] PHST- 2020/09/23 00:00 [accepted] PHST- 2020/11/16 08:47 [entrez] PHST- 2020/11/17 06:00 [pubmed] PHST- 2020/11/17 06:01 [medline] PHST- 2020/10/22 00:00 [pmc-release] AID - 10.3389/fmicb.2020.593301 [doi] PST - epublish SO - Front Microbiol. 2020 Oct 22;11:593301. doi: 10.3389/fmicb.2020.593301. eCollection 2020.