Human CDK1 Baculovirus-Insect cells Overexpression Lysate: Product Information
This Human CDK1 overexpression lysate was created in Baculovirus-Insect cells and intented for use as a Western blot (WB) positive control. Purification of CDK1 protein (Cat: 10739-H09B) from the overexpression lysate was verified.
A DNA sequence encoding the human CDC2 isoform 1 (NP_001777.1) (Met 1-Met 297) was fused with the GST tag at the N-terminus.
The recombinant human CDC2/GST chimera consists of 522 amino acids and predicts a molecular mass of 60 kDa. It migrates as an approximately 53 kDa band in SDS-PAGE under reducing conditions.
Human CDK1 Baculovirus-Insect cells Overexpression Lysate: Usage Guide
Cell lysate was prepared by homogenization of the over-expressed cells in ice-cold modified RIPA Lysis Buffer with cocktail of protease inhibitors (Sigma). Cell debris was removed by centrifugation. Protein concentration was determined by Bradford assay (Bio-Rad protein assay, Microplate Standard assay). The cell lysate was boiled for 5 min in 1 x SDS loading buffer (50 mM Tris-HCl pH 6.8, 12.5% glycerol, 1% sodium dodecylsulfate, 0.01% bromophenol blue) containing 5% b-mercaptoethanol, and lyophilized.
1. Centrifuge the tube for a few seconds and ensure the pellet at the bottom of the tube.
2. Re-dissolve the pellet using 200μL pure water and boil for 2-5 min.
1 X Sample Buffer (1 X modified RIPA buffer+1 X SDS loading buffer).
Stability & Storage
Store at 4℃ for up to twelve months from date of receipt. After re-dissolution, aliquot and store at -80℃ for up to twelve months. Avoid repeated freeze-thaw cycles.
Western Blot (WB) Optimal dilutions/concentrations should be determined by the end user.
Human CDK1 Baculovirus-Insect cells Overexpression Lysate: Alternative Names
Human CDC2 Overexpression Lysate; Human CDC28A Overexpression Lysate; Human P34CDC2 Overexpression Lysate
CDK1 Background Information
CDC2, also known as CDK1, contains 1 protein kinase domain and belongs to the protein kinase superfamily, CMGC Ser/Thr protein kinase family, CDC2/CDKX subfamily. CDC2 is a catalytic subunit of the highly conserved protein kinase complex known as M-phase promoting factor (MPF), which is essential for G1/S and G2/M phase transitions of eukaryotic cell cycle. Mitotic cyclins stably associate with CDC2 and function as regulatory subunits. The kinase activity of CDK1 is controlled by cyclin accumulation and destruction through the cell cycle. The phosphorylation and dephosphorylation of CDC2 also play important regulatory roles in cell cycle control. It is required in higher cells for entry into S-phase and mitosis. CDC2 also is a cyclin-dependent kinase which displays CTD kinase activity and is required for RNA splicing. It has CTD kinase activity by hyperphosphorylating the C-terminal heptapeptide repeat domain (CTD) of the largest RNA polymerase II subunit RPB1, thereby acting as a key regulator of transcription elongation. CDK1 is required for RNA splicing, possibly by phosphorylating SRSF1/SF2. It is involved in regulation of MAP kinase activity, possibly leading to affect the response to estrogn inhibitors.
cyclin-dependent kinase 1
Lee MG, et al. (1987) Complementation used to clone a human homologue of the fission yeast cell cycle control gene cdc2. Nature. 327(6117):31-5.
Enserink JM, et al. (2010) An overview of Cdk1-controlled targets and processes. Cell Division. 5(11): 1-41.
Ninomiya-Tsuji J, et al. (1991) Cloning of a human cDNA encoding a CDC2-related kinase by complementation of a budding yeast cdc28 mutation. Proc Natl Acad Sci. 88(20):9006-10.
Zhan Q, et al. (1999) Association with Cdc2 and inhibition of Cdc2/Cyclin B1 kinase activity by the p53-regulated protein Gadd45. Oncogene. 18(18):2892-900.
Jin S, et al. (2000) The GADD45 inhibition of Cdc2 kinase correlates with GADD45-mediated growth suppression. J Biol Chem. 275(22):16602-8.
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