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Sarcolipin
Sarcolipin is a protein that in humans is encoded by the ''SLN'' gene.〔(【引用サイトリンク】 url = http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=6588 )〕 == Function ==
Sarcoplasmic reticulum Ca2+-ATPases are transmembrane proteins that catalyze the ATP-dependent transport of Ca2+ from the cytosol into the lumen of the sarcoplasmic reticulum in muscle cells. This gene encodes a small proteolipid that regulates several sarcoplasmic reticulum Ca2+-ATPases. The transmembrane protein interacts with Ca2+-ATPases and reduces the accumulation of Ca2+ in the sarcoplasmic reticulum without affecting the rate of ATP hydrolysis.〔(【引用サイトリンク】 url = http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=6588 )〕 Ablation of sarcolipin increases atrial Ca2+ transient amplitudes and enhanced atrial contractility. Furthermore, atria from sarcolipin-null mice have blunted response to isoproterenol stimulation, implicating sarcolipin as a mediator of beta-adrenergic responses in atria. Recently it has been shown that SLN is an important mediator of muscle based thermogenesis and loss of sarcolipin predisposes mice to diet-induced obesity thus suggesting its role in energy metabolism and regulation of weight gain 〔Bal NC, Maurya SK, Sopariwala DH, Sahoo SK, Gupta SC, Shaikh SA, Pant M et al.: Sarcolipin is a newly identified regulator of muscle-based thermogenesis in mammals. Nat Med, 2012. http://www.nature.com/nm/journal/vaop/ncurrent/full/nm.2897.html〕
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Sarcolipin」の詳細全文を読む
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