Cyclin E1, GST-Tagged, Human (SRP5345)

Cyclin E1, GST-Tagged, Human (SRP5345)

Cyclin E1, GST-tagged, human recombinant, expressed in Sf9 cells Catalog Number SRP5345 Storage Temperature –70 °C Synonyms: CCNE1, CCNE Figure 1. SDS-PAGE Gel of Typical Lot: Product Description ³70% (SDS-PAGE, densitometry) Cyclin E1 belongs to the highly conserved cyclin family, whose members are characterized by a dramatic periodicity in protein abundance through the cell cycle that functions as regulators of CDK kinases. Cyclin E1 activity is required for centrosome duplication during S phase and this mechanism could coordinate centrosome reproduction with cycles of DNA synthesis and mitosis.1 The downregulation of cyclin E-CDK2 kinase activity following the G1/S-phase transition is necessary for the maintenance of karyotypic stability. Cyclin E also has a modular centrosomal-targeting Precautions and Disclaimer domain, which is essential for promoting S phase entry 2 This product is for R&D use only, not for drug, in a Cdk2-independent manner. household, or other uses. Please consult the Material Safety Data Sheet for information regarding hazards Recombinant full-length human Cyclin E1 was and safe handling practices. expressed by baculovirus in Sf9 insect cells using an N-terminal GST-tag. The gene accession number is Storage/Stability NM_001238. It is supplied in 50 mM Tris-HCl, pH 7.5, The product ships on dry ice and storage at –70 °C is 150 mM NaCl, 10 mM glutathione, 0.1 mM EDTA, recommended. After opening, aliquot into smaller 0.25 mM DTT, 0.1 mM PMSF, and 25% glycerol. quantities and store at –70 °C. Avoid repeated handling and multiple freeze/thaw cycles. Molecular mass: ~73 kDa References The enzymatic activity of this product has not been 1. Hinchcliffe, E.H. et al., Requirement of Cdk2-cyclin determined. E activity for repeated centrosome reproduction in Xenopus egg extracts. Science, 283, 851-854 (1999). 2. Matsumoto, Y. et al., A centrosomal localization signal in cyclin E required for Cdk2-independent S phase entry. Science, 306, 885-888 (2004). RC,MAM 10/12-1 Ó2012 Sigma-Aldrich Co. LLC. All rights reserved. SIGMA-ALDRICH is a trademark of Sigma-Aldrich Co. LLC, registered in the US and other countries. Sigma brand products are sold through Sigma-Aldrich, Inc. Purchaser must determine the suitability of the product(s) for their particular use. Additional terms and conditions may apply. Please see product information on the Sigma-Aldrich website at www.sigmaaldrich.com and/or on the reverse side of the invoice or packing slip..

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