- 产品描述
SIGMA试剂,周一,五定货,3周左右到货。
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α-淀粉酶抑制剂 来源于小麦 (小麦种子) ,α-Amylase Inhibitor from Triticum aestivum (wheat seed) ,A1520 - Type I, lyophilized powder
activity | ≥1000 inhibitor U/mg protein (using human salivary α-amylase) |
≥200 inhibitor U/mg protein (using porcine pancreatic α-amylase) | |
composition | Protein, 35-65% biuret |
storage temp. | −20°C |
描述
Unit Definition
经 25°C 预孵育后,一单位本品可使两单位 α-淀粉酶 (A0521) 的活性降低 50%。
Physical form
冻干粉,含如磷酸钠之类的缓冲盐。
Biochem/physiol Actions
Competitive inhibitor of human salivary α-amylase. KI = 2.9 nM, compared to a KM of 5.9 mM (calculated per mole of α-1,4-linked maltose residues).