The p21 protein is a universal inhibitor of cyclindependent kinases and of cell-cycle progression and is involved in numerous growth-inhibitory pathways in cell culture systems. Recent studies suggest that p21 regulates hepatocyte cell cycle progression in models of liver regeneration. The present s
Purification and crystallization of cyclin-dependent kinase inhibitor p21
β Scribed by Dale R. Mayrose; Hengming Ke; Yue Xiong; Michael A. Nichols
- Publisher
- Cold Spring Harbor Laboratory Press
- Year
- 1996
- Tongue
- English
- Weight
- 343 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0961-8368
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
p21, a universal inhibitor of mammalian cyclinβdependent kinases (CDK), regulates cell cycle progression by forming various distinct protein complexes with cyclins, CDKs, and the proliferating cell nuclear antigen. We have overexpressed recombinant human p21 in E. coli and purified active p21 to near homogeneity on a large scale. Crystals of recombinant p21 have been grown in the space group P2~1~ a = 157.4, b = 152.7, c = 90.6 Γ , and Ξ² = 92.7Β°. The diffraction data of the recombinant p21 have been collected to 2.5 and 3.5 Γ resolution for the native crystal and two heavy atom derivatives of mercury and iridium.
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