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008200131s2019 ||||||||||||||||| ||eng d
020 ▼a 9781088355978
035 ▼a (MiAaPQ)AAI22588621
040 ▼a MiAaPQ ▼c MiAaPQ ▼d 247004
0820 ▼a 576
1001 ▼a Burton, Aisha Tafa.
24510 ▼a Characterization of a Plasmid Encoded Sigma Factor Endogenous to Bacillus Subtilis.
260 ▼a [S.l.]: ▼b Indiana University., ▼c 2019.
260 1 ▼a Ann Arbor: ▼b ProQuest Dissertations & Theses, ▼c 2019.
300 ▼a 160 p.
500 ▼a Source: Dissertations Abstracts International, Volume: 81-04, Section: B.
500 ▼a Advisor: Kearns, Daniel B.
5021 ▼a Thesis (Ph.D.)--Indiana University, 2019.
506 ▼a This item must not be sold to any third party vendors.
520 ▼a Bacteria use sigma factors to regulate and control gene expression. Extra cytoplasmic function sigma factors are activated during times of stress to enhance the survival of the cell. Here we show that pBS32, a large, low copy number plasmid present in the ancestral strain of Bacillus subtilis, encodes an extra cytoplasmic function sigma factor, SigN, that mediates cell death after DNA damage. Using molecular biology, biochemistry, and genetics, SigN was characterized. We show that SigN interacts with RNAP to initiate transcription, is repressed by LexA, autoactivates, and contains a regulon on pBS32. The mechanism of death remains unknown, but we know that the global transcriptional repressor, AbrB, is needed for death to occur. With these new findings, we have increased the knowledge base of pBS32 and expanded what we currently know about extra cytoplasmic function sigma factors.
590 ▼a School code: 0093.
650 4 ▼a Microbiology.
690 ▼a 0410
71020 ▼a Indiana University. ▼b Biology.
7730 ▼t Dissertations Abstracts International ▼g 81-04B.
773 ▼t Dissertation Abstract International
790 ▼a 0093
791 ▼a Ph.D.
792 ▼a 2019
793 ▼a English
85640 ▼u http://www.riss.kr/pdu/ddodLink.do?id=T15493109 ▼n KERIS ▼z 이 자료의 원문은 한국교육학술정보원에서 제공합니다.
980 ▼a 202002 ▼f 2020
990 ▼a ***1008102
991 ▼a E-BOOK