Human ATF2 Baculovirus-Insect cells Overexpression Lysate: Product Information
This Human ATF2 overexpression lysate was created in Baculovirus-Insect cells and intented for use as a Western blot (WB) positive control. Purification of ATF2 protein (Cat: 11599-H20B) from the overexpression lysate was verified.
A DNA sequence encoding full length of human ATF2 (P15336-1) (Met 1-Ser 505) was fused with the N-terminal polyhistidine-tagged GST tag at the N-terminus.
The recombinant human ATF2/GST chimera consists of 742 amino acids and has a calculated molecular mass of 82.4 kDa. It migrates as an approximately 85 kDa band in SDS-PAGE under reducing conditions.
Human ATF2 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 ATF2 Baculovirus-Insect cells Overexpression Lysate: Alternative Names
Human CRE-BP1 Overexpression Lysate; Human CREB-2 Overexpression Lysate; Human CREB2 Overexpression Lysate; Human HB16 Overexpression Lysate; Human TREB7 Overexpression Lysate
ATF2 Background Information
Activating transcription factor 2, also known as ATF2, is a member of the leucine zipper family of DNA-binding proteins that binds to the cAMP response element. Its activity is enhanced after phosphorylation by stress-activated protein kinases such as c-Jun N-terminal kinase and p38. ATF2 has been found to be a target of the JNK signal transduction pathway and mediate adenovirus E1A-inducible transcriptional activation. ATF2 is also been reported playing roles in TGF-β signaling pathway. It has been shown that the transcription factor ATF2 is bound by a hetero-oligomer of Smad3 and Smad4 upon TGF-β stimulation. Studies indicate that ATF-2 plays a central role in TGF-β signaling by acting as a common nuclear target of both Smad and TAK1 pathways.
activating transcription factor 2
Livingstone C, et al. (1995) ATF-2 contains a phosphorylation-dependent transcriptional activation domain. EMBO J. 14 (8): 1785-97.
Gupta S, et al. (1995) Transcription factor ATF2 regulation by the JNK signal transduction pathway. Science . 267 (5196): 389-93.
Sano YJ, et al. (1999) ATF-2 Is a Common Nuclear Target of Smad and TAK1 Pathways in Transforming Growth Factor-_ Signaling. The Journal of Biological Chemistry. 274: 8949-57.
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