Human Desmocollin 2/DSC2 HEK293 Overexpression Lysate: Product Information
This Human Desmocollin 2/DSC2 overexpression lysate was created in HEK293 Cells and intented for use as a Western blot (WB) positive control. Purification of Desmocollin 2/DSC2 protein (Cat: 10809-H08H) from the overexpression lysate was verified.
A DNA sequence encoding the extracellular domain (Met 1-Arg 684) of human DSC2 (Q02487-1) was expressed, with a C-terminal polyhistidine tag.
The secreted recombinant human DSC2 (pro form) consists of 668 amino acids and predicts a molecular mass of 75 kDa. As a result of glycosylation, the apparent molecular mass of rhDSC2 is approximately 85 and 100 kDa in SDS-PAGE under reducing conditions, corresponding to the mature and pro form respectively.
Human Desmocollin 2/DSC2 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 Desmocollin 2/DSC2 HEK293 Overexpression Lysate: Alternative Names
Human ARVD11 Overexpression Lysate; Human CDHF2 Overexpression Lysate; Human DG2 Overexpression Lysate; Human DGII/III Overexpression Lysate; Human DSC3 Overexpression Lysate
Desmocollin 2/DSC2 Background Information
DSC2 is a calcium-dependent glycoprotein that is a member of the desmocollin subfamily of the cadherin superfamily. Like other desmocollins, murine DSC2 has two products, Dsc2a and Dsc2b, produced by alternative splicing of a 46 bp exon which encodes 11 COOH-terminal aa followed by an in-frame stop codon. These desmosomal family members, along with the desmogleins, are found primarily in epithelial cells where they constitute the adhesive proteins of the desmosome cell-cell junction and are required for cell adhesion and desmosome formation. The desmosomal family members are arranged in two clusters on chromosome 18, occupying less than 65 kb combined. Mutations in DSC2 are associated with arrhythmogenic right ventricular dysplasia-11. DSC2 is Involved in the interaction of plaque proteins and intermediate filaments mediating cell-cell adhesion. DSC2 may contribute to epidermal cell positioning by mediating differential adhesiveness between cells that express different isoforms.
Nuber UA, et al. (1995) The widespread human desmocollin Dsc2 and tissue-specific patterns of synthesis of various desmocollin subtypes. Eur J Cell Biol. 66 (1): 69-74.
Marsden MD, et al. (1997) Cloning and transcriptional analysis of the promoter of the human type 2 desmocollin gene (DSC2). Gene. 186 (2): 237-47.
Greenwood MD, et al. (1997) Exon-intron organization of the human type 2 desmocollin gene (DSC2): desmocollin gene structure is closer to "classical" cadherins than to desmogleins. Genomics. 44 (3): 330-5.
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