Human ASAM HEK293 Overexpression Lysate: Product Information
This Human ASAM overexpression lysate was created in HEK293 Cells and intented for use as a Western blot (WB) positive control. Purification of ASAM protein (Cat: 10794-H08H) from the overexpression lysate was verified.
A DNA sequence encoding the extracellular domain of human ASAM (NP_079045.1) precursor (Met 1-Met 233) was expressed with a C-terminal polyhistidine tag.
The secreted recombinant human ASAM comprises 227 amino acids and predicts a molecular mass of 25.8 kDa. It migrates as an approximately 32-35 kDa band in SDS-PAGE under reducing conditions.
Human ASAM 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 ASAM HEK293 Overexpression Lysate: Alternative Names
Human ACAM Overexpression Lysate; Human ASAM Overexpression Lysate; Human CSBM Overexpression Lysate; Human CSBS Overexpression Lysate
ASAM Background Information
Adipocyte-specific adhesion molecule (ASAM), also known as ACAM and CLMP, is a type I transmembrane protein and a member of the CTX (cortical thymocyte marker in Xenopus) family within the immunoglobulin superfamily. ASAM protein is highly expressed in the small intestine and placenta, and is found at intermediate levels in the heart, skeletal muscle, colon, spleen, kidney, and lung, and appears in low levels in the liver and peripheral blood leukocytes as well. ASAM is a transmembrane component of tight junctions in epithelial cells that can mediate cell aggregation and regulate transepithelial resistance across polarized epithelial cells. In addition, its expression is strongly correlated with white adipose tissue (WAT) mass of human and rodents with obesity.
CXADR-like membrane protein
Eguchi J, et al. (2005) Identification of adipocyte adhesion molecule (ACAM), a novel CTX gene family, implicated in adipocyte maturation and development of obesity. Biochem J. 387(Pt 2): 343-53.
Sze KL, et al. (2008) Expression of CLMP, a novel tight junction protein, is mediated via the interaction of GATA with the Kruppel family proteins, KLF4 and Sp1, in mouse TM4 Sertoli cells. J Cell Physiol. 214(2): 334-44.
Sze KL, et al. (2008) Post-transcriptional regulation of CLMP mRNA is controlled by tristetraprolin in response to TNFalpha via c-Jun N-terminal kinase signalling. Biochem J. 410(3): 575-83.
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