Human IL-35 HEK293 Overexpression Lysate: Product Information
This Human IL-35 overexpression lysate was created in HEK293 Cells and intented for use as a Western blot (WB) positive control. Purification of IL-35 protein (Cat: 10705-H02H) from the overexpression lysate was verified.
A DNA sequence encoding the human IL35 complex composed of IL27B subunit (NP_005746.2) (Met 1-Lys 229) and the mature form of human IL12 p35 subunit (P29459) (Arg 23-Ser 219) linked by a polypeptide linker was fused with the Fc region of human IgG1 at the C-terminus.
The recombinant human IL35/Fc is a disulfide-linked homodimeric protein. The reduced monomer consists of 645 amino acids and has a predicted molecular mass of 73.4 kDa. In SDS-PAGE under reducing conditions, the apparent molecular mass of rhIL35/Fc monomer is approximately 90-100 kDa due to glycosylation.
Human IL-35 HEK293 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 IL-35 HEK293 Overexpression Lysate: Alternative Names
Human CLMF Overexpression Lysate; Human IL-12A Overexpression Lysate; Human IL-35 Overexpression Lysate; Human Interleukin-35 Overexpression Lysate; Human NFSK Overexpression Lysate; Human NKSF1 Overexpression Lysate; Human P35 Overexpression Lysate
IL-35 Background Information
IL12A is a subunit of a cytokine that acts on T and natural killer cells, and has a broad array of biological activities. IL12A, together with IL27B, form a disulfide-linked heterodimer: IL12A&IL27B. IL12A&IL27B is required for the T-cell-independent induction of IFN-gamma, and is important for the differentiation of both Th1 and Th2 cells. The responses of lymphocytes to this cytokine are mediated by the activator of transcription protein STAT4. Nitric oxide synthase 2A (NOS2A/NOS2) is found to be required for the signaling process of IL12A&IL27B in innate immunity.
Wolf S.F., et al.,(1991), Cloning of cDNA for natural killer cell stimulatory factor, a heterodimeric cytokine with multiple biologic effects on T and natural killer cells. J. Immunol. 146:3074-3081.
Gubler U., et al., (1991), Coexpression of two distinct genes is required to generate secreted bioactive cytotoxic lymphocyte maturation factor.Proc. Natl. Acad. Sci. U.S.A. 88:4143-4147.
Batten M., et al.,(2007), The biology and therapeutic potential of interleukin 27.J. Mol. Med. 85:661-672.
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