推薦產品
種類
Type VII-A
形狀
ammonium sulfate suspension
比活性
≥500 units/mg protein (E1%/280)
儲存溫度
2-8°C
尋找類似的產品? 前往 產品比較指南
一般說明
分子质量:51-54 kDa。
从猪胰腺中分离的α-淀粉酶是一种糖蛋白。它是由约475个残基组成的一条多肽链(包含2个SH基团和4个二硫键)以及一个紧密结合的Ca2+ (稳定性所必需的)组成的。氯离子是活性和稳定性所必需的。活性pH范围为5.5至8.0,最适pH为7。
从猪胰腺中分离的α-淀粉酶是一种糖蛋白。它是由约475个残基组成的一条多肽链(包含2个SH基团和4个二硫键)以及一个紧密结合的Ca2+ (稳定性所必需的)组成的。氯离子是活性和稳定性所必需的。活性pH范围为5.5至8.0,最适pH为7。
單位定義
One unit will liberate 1.0 mg of maltose from starch in 3 min at pH 6.9 at 20 °C.
外觀
Suspension in 3.2 M (NH4)2SO4, pH 6.1
其他說明
有关复合碳水化合物分析 酶的更多信息,请访问 www.sigma-aldrich.com/enzymeexplorer
客戶也查看了
Fushan Liu et al.
Journal of experimental botany, 60(15), 4423-4440 (2009-10-07)
The amylose extender (ae(-)) mutant of maize lacks starch branching enzyme IIb (SBEIIb) activity, resulting in amylopectin with reduced branch point frequency, and longer glucan chains. Recent studies indicate isozymes of soluble starch synthases form high molecular weight complexes with
Buford L Nichols et al.
The Journal of nutrition, 139(4), 684-690 (2009-02-06)
Starch is the major source of food glucose and its digestion requires small intestinal alpha-glucosidic activities provided by the 2 soluble amylases and 4 enzymes bound to the mucosal surface of enterocytes. Two of these mucosal activities are associated with
Wiesław Jerzy Cubała et al.
Journal of affective disorders, 157, 14-17 (2014-03-04)
Altered monoamine neurotransmission accompanied by hypothalamic-pituitary-adrenal axis dysfunction and autonomic nervous system hyperactivity have been associated with major depressive disorder (MDD). Salivary α-amylase (sAA) is indicative of autonomic activation and reflects central noradrenergic activity. Scarce studies on sAA in MDD
Heidemarie K Laurent et al.
Psychosomatic medicine, 75(8), 744-750 (2013-10-01)
Neurotrophins such as nerve growth factor (NGF) may represent a stress-responsive system complementing the better known neuroendocrine (hypothalamic-pituitary-adrenal axis) and autonomic nervous system, but there is little evidence for NGF response to acute stress in humans because noninvasive measures have
Phuong Lan Tran et al.
FEBS letters, 588(4), 620-624 (2014-01-21)
The action pattern of Bacillus licheniformis thermostable α-amylase (BLA) was analyzed using a series of (14)C-labeled and non-labeled maltooligosaccharides from maltose (G2) to maltododecaose (G12). Maltononaose (G9) was the preferred substrate, and yielded the smallest Km=0.36 mM, the highest kcat=12.86
我們的科學家團隊在所有研究領域都有豐富的經驗,包括生命科學、材料科學、化學合成、色譜、分析等.
聯絡技術服務