Biochemical studies on the replication fork model with three DNA polymerases in human cells
Project/Area Number |
25440011
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Molecular biology
|
Research Institution | Kyushu University |
Principal Investigator |
|
Project Period (FY) |
2013-04-01 – 2017-03-31
|
Project Status |
Completed (Fiscal Year 2016)
|
Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
|
Keywords | 複製フォーク / DNAポリメラーゼ / in vitro複製 / in vitro 複製 |
Outline of Final Research Achievements |
This research aimed to study the mechanism to proceed a replication fork with three functionally distinct DNA polymerases in eukaryotes. I especially focused on a biochemical background to distinguish DNA polymerases for syntheses of leading and lagging strands. Firstly, I reconstituted the replicative DNA helicase, human CMG complex and obtained the highly purified active CMG helicase. Secondly, I analyzed a functional significance of the interaction between the second PCNA loader Ctf18-RFC and DNA polymerase ε. I elucidated that Ctf18-RFC actively loads PCNA only when it complexes with DNA polymerase ε. This result indicated that Ctf18-RFC functions as a component of the leading-strand DNA polymerase complex and actively loads PCNA on the leading strands. Considering the role of RFC for loading of PCNA on the lagging strands, these two PCNA loaders will coordinate PCNA loading on both strands and play a role to distinguish DNA polymerases for syntheses of the two DNA strands.
|
Report
(5 results)
Research Products
(42 results)
-
[Journal Article] The dominant role of proofreading exonuclease activity of replicative polymerase ε in cellular tolerance to cytarabine (Ara-C).2017
Author(s)
Tsuda M, Terada K, Ooka M, Kobayashi K, Sasanuma H, Fujisawa R, Tsurimoto T, Yamamoto J, Iwai S, Kadoda K, Akagawa R, Huang SN, Pommier Y, Sale JE, Takeda S, Hirota K.
-
Journal Title
Oncotarget
Volume: in press
Issue: 20
Pages: 33457-33474
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
-
-
-
[Journal Article] Claspin recruits Cdc7 kinase for initiation of DNA replication in human cells.2016
Author(s)
Yang CC, Suzuki M, Yamakawa S, Uno S, Ishii A, Yamazaki S, Fukatsu R, Fujisawa R, Sakimura K, Tsurimoto T, Masai H.
-
Journal Title
Nat Commun.
Volume: 7
Issue: 1
Pages: 12135-12135
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
-
[Journal Article] In vivo evidence for translesion synthesis by the replicative DNA polymerase δ.2016
Author(s)
Hirota K, Tsuda M, Mohiuddin, Tsurimoto T, Cohen IS, Livneh Z, Kobayashi K, Narita T, Nishihara K, Murai J, Iwai S, Guilbaud G, Sale JE, Takeda S.
-
Journal Title
Nucleic Acids Res
Volume: 44(15)
Pages: 7242-50
DOI
NAID
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
-
-
-
-
-
-
-
[Journal Article] The POLD3 subunit of DNA polymerase δ can promote translesion synthesis independently of DNA polymerase ζ.2015
Author(s)
Hirota K, Yoshikiyo K, Guilbaud G, Tsurimoto T, Murai J, Tsuda M, Phillips L, Narita T, Nishihara K, Kobayashi K, Yamada K, Nakamura J, Pommier Y, Lehmann, A, Sale J, Takeda S
-
Journal Title
Nucleic Acids Res.
Volume: 43
Issue: 3
Pages: 1671-1683
DOI
NAID
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-