Human P38 Delta/MAPK13 Baculovirus-Insect cells Overexpression Lysate: Product Information
This Human P38 Delta/MAPK13 overexpression lysate was created in Baculovirus-Insect cells and intented for use as a Western blot (WB) positive control. Purification of P38 Delta/MAPK13 protein (Cat: 10747-H09B) from the overexpression lysate was verified.
A DNA sequence encoding the full length of human MAPK13 (O15264) (Met 1-Leu 365) was fused with the GST tag at the N-terminus.
The recombinant human MAPK13/GST chimera consists of 589 amino acids and predicts a molecular mass of 68.4 kDa. It migrates as an approximately 60 kDa band in SDS-PAGE under reducing conditions.
Human P38 Delta/MAPK13 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 P38 Delta/MAPK13 Baculovirus-Insect cells Overexpression Lysate: Alternative Names
Human MAPK-13 Overexpression Lysate; Human MAPK13 Overexpression Lysate; Human p38delta Overexpression Lysate; Human PRKM13 Overexpression Lysate; Human SAPK4 Overexpression Lysate
P38 Delta/MAPK13 Background Information
The p38 family of mitogen-activated protein kinases (MAPK) includes p38 alpha (SAPK2a, CSBP), p38 beta (SAPK2b), p38 delta (SAPK4), and p38 gamma (SAPK3/ERK6). p38 alpha and p38 beta are widely expressed p38 isoforms that are involved in regulation of cell proliferation, differentiation, development, and response to stress. p38 delta, also known as MAPK13, is a regulator of differentiation-dependent gene expression in keratinocytes, and been as a regulator of surface epithelia differentiation and apoptosis. p38 delta protein is upregulated in Cholangiocarcinoma (CC) relative to hepatocellularcarcinoma (HCC) and to normal biliary tract tissues. p38 delta is important for motility and invasion of CC cells, suggesting that p38 delta may play an important role in CC metastasis. p38 delta is expressed in the epidermis, suggesting a role for p38 delta in regulating differentiation. p38 delta is the major p38 isoform driving suprabasal involucrin gene expression and that p38 delta directly regulates ERK1/2 activity via formation of a p38 delta-ERK1/2 complex. Recent emerging evidence suggests that the p38 stress MAPK pathway may function as a tumor suppressor through regulating Ras-dependent and -independent proliferation, transformation, invasion and cell death by isoform-specific mechanisms. p38 delta has important role in promoting cell proliferation and tumor development in epidermis and may have therapeutic implication for skin cancer.
mitogen-activated protein kinase 13
Efimova T, et al. (2003) A regulatory role for p38 delta MAPK in keratinocyte differentiation. Evidence for p38 delta-ERK1/2 complex formation. J Biol Chem. 278(36): 34277-85.
Eckert RL, et al. (2003) p38 Mitogen-activated protein kinases on the body surface--a function for p38 delta. J Invest Dermatol. 120(5): 823-8.
Loesch M, et al. (2008) The p38 MAPK stress pathway as a tumor suppressor or more? Front Biosci. 13: 3581-93.
Schindler EM, et al. (2009) p38delta Mitogen-activated protein kinase is essential for skin tumor development in mice. Cancer Res. 69(11): 4648-55.
Tan FL, et al. (2010) p38delta/MAPK13 as a diagnostic marker for cholangiocarcinoma and its involvement in cell motility and invasion. Int J Cancer. 126(10): 2353-61.
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