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Low Levels of Cyclin D and Nonfunctional Rb Protein Affect cdk6 Association with Cyclin-Dependent Kinase Inhibitor p27Kip1

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Author(s)
Taeg Kyu KwonJong-Wook Park
Keimyung Author(s)
Kwon, Taeg KyuPark, Jong Wook
Department
Dept. of Immunology (면역학)
Journal Title
Biochemical and Biophysical Research Communications
Issued Date
2001
Volume
284
Issue
1
Abstract
p27Kip1 associates with cyclin/cdk complexes and inhibiting cdk activity, and overexpression of p27Kip1 induces G1 arrest. We found that p27Kip1 overexpression inhibits cdk2 kinase activity, but not cdk6 kinase activity in HeLa cells. The amount of p27Kip1 associated with cdk2 was significantly higher than that associated with cdk6. cdk6 complexes contained detectable amounts of p27Kip1 in all human cell lines examined, except in HeLa cells where p27Kip1 preferentially associated with cdk2. It appears that in HeLa cells overexpressed p27Kip1 fails to inhibit cdk6 kinase activity because of low binding affinity of cdk6 to p27Kip1. The low binding affinity is due to a low level of the cdk6/cyclin D complexes. Functional inactivation of pRb has an effect on p27Kip1 association with cdk6/cyclin D complexes.
Keimyung Author(s)(Kor)
권택규
박종욱
Publisher
School of Medicine
Citation
Taeg Kyu Kwon and Jong-Wook Park. (2001). Low Levels of Cyclin D and Nonfunctional Rb Protein
Affect cdk6 Association with Cyclin-Dependent
Kinase Inhibitor p27Kip1. Biochemical and Biophysical Research Communications, 284(1), 106–111. doi: 10.1006/bbrc.2001.4947
Type
Article
ISSN
0006-291X
Source
https://linkinghub.elsevier.com/retrieve/pii/S0006291X01949472
DOI
10.1006/bbrc.2001.4947
URI
https://kumel.medlib.dsmc.or.kr/handle/2015.oak/35192
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Immunology (면역학)
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