Determination of the complex structure of human REV1 and PCNA & yeast Pol η and ubiquitinated PCNA = Rev1-PCNA 와 Pol eta-ubiquitinated PCNA 복합 구조의 규명

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During replication, if there is a lesion on DNA helix, the fork will be stalled. PCNA is monoubiquitinated and recruits the Y-family polymerases to the lesion. Herein, we investigated in the recruitment of REV1 and polymerase η to the error and interact with ubiquitinated PCNA. Other groups claimed that polymerase η contains two domains called ubiquitin zinc finger domain (UBZ) and PCNA interaction peptides box (PIP) which could bind to UbPCNA. Using NMR, we characterized the interaction of polymerase η C-terminus and ubiquitin and discovered a new ubiquitin binding box (UBB) that could bind to ubiquitin as well. Interestingly, the UBB and UBZ shared the same binding surface with ubiquitin. In addition, their function in TLS was confirmed by cell survival test. Finally, we also proposed that this binding pulls the ubiquitin closer to PCNA and make the complex more stable.
Advisors
Park, Hee-Sungresearcher박희성researcher
Description
한국과학기술원 :화학과,
Publisher
한국과학기술원
Issue Date
2020
Identifier
325007
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 화학과, 2020.8,[vi, 80 p. :]

Keywords

UbPCNA; polymerase η; UBZ; ubiquitin; translesion

URI
http://hdl.handle.net/10203/284378
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=924423&flag=dissertation
Appears in Collection
CH-Theses_Ph.D.(박사논문)
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