Small prokaryotic DNA-binding proteins protect genome integrity throughout the life cycle

Molan, Katja (author), Žgur-Bertok, Darja (author)

Genomes of all organisms are persistently threatened by endogenous and exogenous assaults. Bacterial mechanisms of genome maintenance must provide protection throughout the physiologically distinct phases of the life cycle. Spore-forming bacteria must also maintain genome integrity within the dormant endospore. The nucleoid-associated proteins (NAPs) influence nucleoid organization and may alter DNA topology to protect DNA or to alter gene expression patterns. NAPs are characteristically multifunctional; nevertheless, Dps, HU and CbpA are most strongly associated with DNA protection. Archaea display great variety in genome organization and many inhabit extreme environments. As of yet, only MC1, an archaeal NAP, has been shown to protect DNA against thermal denaturation and radiolysis. ssDNA are intermediates in vital cellular processes, such as DNA replication and recombination. Single-stranded binding proteins (SSBs) prevent the formation of secondary structures but also protect the hypersensitive ssDNA against chemical and nuclease degradation. Ionizing radiation upregulates SSBs in the extremophile Deinococcus radiodurans.

• Language: English
• Keywords: DNA protection, nucleoid-associated proteins, small acid soluble proteins, single-stranded DNA-binding proteins
• Work type: Article
• Typology: 1.02 - Review Article
• Organization: BF - Biotechnical Faculty
• Publication status: Published
• Publication version: Version of Record
• Year: 2022
• Number of pages: 15 str.
• Numbering: Vol. 23, iss. 7, art. 4008
• PID: 20.500.12556/RUL-137457
• UDC: 579.25:575.111
• ISSN on article: 1422-0067
• DOI: 10.3390/ijms23074008
• COBISS.SI-ID: 103764739
• Publication date in RUL: 17.06.2022

Record is a part of a journal

• Title: International journal of molecular sciences
• Shortened title: Int. j. mol. sci.
• Publisher: MDPI
• ISSN: 1422-0067
• COBISS.SI-ID: 2779162

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
• Licensing start date: 04.04.2022

Secondary language

• Language: Slovenian
• Keywords: molekularna genetika, genom, DNA, proteini

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: P1-0198
• Name: Molekularno-biološke raziskave mikroorganizmov