Examination of The Correlation between DNA-dependent Protein Kinase and Telomerase Activity
スポンサーリンク
概要
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Telomerase is known as a ribonucleoprotein enzyme essential for the repair of replication-induced deletion of chromosome terminal in most eukaryotes. Although the regulatory mechanism of telomerase inactivation and re-activation has not yet been clarified, there is a possibility that telomerase activity is regulated by phosphorylation and dephosphorylation. DNA-dependent protein kinase (DNA-PK) is considered to be a critical enzyme in DNA double-strand break repair and possibility of involvement of this enzyme in the regulation of telomerase is expected. To examin correlation between telomerase and DNA-PK, we purified DNA-PK from human leukaemic MOLT-4 cells by successive column chromatography. Through the conventional process of purification, DNA-PK activity was accompanied by telomerase activity. We used modified purification protcol in this study, and tinaly, succeeded in purification of DNA-PK separately from telomerase activity. This DNA-PK didn't show any effect on the telomerase activity, and these results indicate that the telomerase may not be regulated via phosphorylation with DNA-PK.
- お茶の水女子大学の論文
著者
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Matsumoto Yoshihisa
Department Of Anesthesiology And Intensive Care Medicine Graduate School Of Medical Science Kanazawa
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Murakami-murofushi Kimiko
Department Of Biology Faculty Of Science Ochanomizu University
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Murakami-murofushi Kimiko
Department Of Biology Faculty Of Sience Ochanomizu University
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Suzuki Noriko
Department Of Biochemistry And Molecular Biology Division Of Gene Therapy Research Center For Advanc
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Suzuki Norio
Department Of Biological Sciences Graduate School Of Science Hokkaido University
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Matsumoto Yoshihisa
Department Of Radiation Oncology Faculty Of Medicine University Of Tokyo
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Ikeda Fumi
Department of Biology, Faculty of Sience, Ochanomizu University
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Ikeda Fumi
Department Of Biology Faculty Of Sience Ochanomizu University
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Suzuki Norio
Department Of Radiation Oncology Faculty Of Medicine University Of Tokyo
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Suzuki Norio
Department Of Agricultural Chemistry The University Of Tokyo
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Suzuki Noriko
Department of Applied Pharmacology, Kyoto Pharmaceutical University
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