Single-molecule Dynamics in Protein Interactions: Characterization of RarA and RecD2 of Bacillus subtilis
Maintenance of genome integrity is one of the crucial functions in life, to preserve the appropriate genetic information, being homologous recombination a key process in the DNA repair. I have used a novel technique, using slim-field microscopy to obtain single-molecule dynamics of two poorly descri...
সংরক্ষণ করুন:
প্রধান লেখক: | |
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অন্যান্য লেখক: | |
বিন্যাস: | Dissertation |
ভাষা: | ইংরেজি |
প্রকাশিত: |
Philipps-Universität Marburg
2018
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বিষয়গুলি: | |
অনলাইন ব্যবহার করুন: | পিডিএফ এ সম্পূর্ন পাঠ |
ট্যাগগুলো: |
ট্যাগ যুক্ত করুন
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সংক্ষিপ্ত: | Maintenance of genome integrity is one of the crucial functions in life, to preserve the appropriate genetic information, being homologous recombination a key process in the DNA repair. I have used a novel technique, using slim-field microscopy to obtain single-molecule dynamics of two poorly described proteins, RarA and RecD2, in different recombination deficient mutants and conditions to characterize them. Single-molecule microscopy has been shown as a powerful method for in vivo characterization of proteins and its interactions. Together with genetics, I have added a new level of complexity in the regulation of homologous recombination as a multiway process in which many factors are involved in different avenues with partially overlapping functions depending on the kind of DNA damage generated.
I have characterized RarA and RecD2 as factors involved in recombination, but also in replication of the DNA, being part of both RecA-independent and RecA-dependent replication progression, and antagonistic regulators of RecA filamentation. RarA plays its role in replication through interactions with DnaB, and in recombination as a RecA positive regulator through its interactions with RecA, RecO, RecR, RecD2 and RecU. RarA is regulated by the RecQ-like helicases RecQ and RecS. RecD2 plays a role in chromosomal segregation that becomes essential in the absence of RecG or RuvAB, and is a negative regulator in homologous recombination that interacts with RecA, RarA, RecX, RecF and PcrA. |
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দৈহিক বর্ননা: | 105 Seiten |
ডিওআই: | 10.17192/z2018.0110 |