Adiponectin is an adipose-derived secreted protein containing 226aa. It is relatively abundant in humans and rodents, accounting for about 0.01% of total plasma protein. The circulating levels of adiponectin are decreased under conditions of obesity, insulin resistance, and type II diabetes. Disruption of adiponectin in mice causes insulin resistance and neointimal formation. Conversely, administration of recombinant adiponectin suppresses hepatic glucose production, and reverses insulin resistance associated with both lipoatrophy and obesity. The protective role of adiponectin is attributed to its anti-inflammatory properties (e.g. ability to suppress expression of TNF-alpha and class A scavenger receptor in macrophages). Recombinant adiponectin is a multimeric glycoprotein containing aa Glu-19 to Asn-244 of the adiponectin precursor protein fused to an N-terminal histidine tag. Monomeric glycosylated adiponectin migrates at an apparent molecular weight of approximately 35kD by SDS PAGE analysis under reducing conditions.
Source:
Recombinant protein corresponding to human Adiponectin, expressed in Hi-5 Insect cells.
Biological Activity:
Determined by a cytotoxic assay using M1 cells. The ED50 for this effect is 3-6g/ml.
Endotoxin:
<0.1ng/ug (1EU/ug)
AA Sequence:
RGHHHHHHHH ETTTQGPGVL LPLPKGACTG WMAGIPGHPG HNGAPGRDGR DGTPGEKGEK GDPGLIGPKG DIGETGVPGA EGPRGFPGIQ GRKGEPGEGA YVYRSAFSVG LETYVTIPNM PIRFTKIFYN QQNHYDGSTG KFYCNIPGLY YFSYHITVYM KDVKVSLFKK DKAVLFTYDQ YQEKNVDQAS GSVLLHLEVG DQVWLQVYGD GDHNGLYADN VNDSTFTGFL LYHDTN
Storage and Stability:
May be stored at 4 degrees C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
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