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Product details
名称
黄递酶 (DPH)
别名
心肌黄酶
英文别名
DIA | wrbA | yieF | kefF | qorB | kefG | ECK0995 | chrR | ECK3706 | ECK0047 | yabF | ECK4207 | ytfG | ECK3339 | yheR
货号
rp216196-5KU
包装规格
5KU
级别
生物活性
浓度
≥90%(SDS-PAGE)
产品介绍
用途: 用于β-羟丁酸试剂的研发和大量配制。 酶学性质 来源:微生物 分类:EC 1.6.5.2 分子量:28 kDa (SDS-PAGE) 等电点:5.2 Km 值:7.4 ×10^-4 M (NADH),6.0×10^-2 M (NADPH) 抑制剂:Fe3+, Mn2+, Cu2+ 最适 pH:7.5 图 1 最适温度:45℃ 图 2 pH 稳定性:4.5-9.0 (25℃, 16 h) 图 3 热稳定性:50℃以下稳定 (pH 7.5, 30 min) 图 4 稳定性:-25~-15℃静置保存 12 个月保持90%以上活性 图 5 保护剂:FMN, NAD(P)H 活性测定方法 1、原理 DCPIP(二氯酚靛酚)的量可用紫外可见分光光度计在600 nm下检测。 2、酶活定义 单位酶活定义为在下述反应条件下,每分钟消耗1μmol DCPIP所需的酶量。 3、试剂准备 试剂 I:200mM pH 7.0 Tris-HCl缓冲液。 试剂 II:36 mM NADH溶液(用水溶解,现配现用,置于冰上)。 试剂 III:2.4 mM DCPIP(用水溶解,室温放置,现配现用)。 试剂 IV:200 mM Tris-HCl,pH 7.5,含0.5% Tween20。 待测样品:用试剂 IV将酶液稀释至0.1-0.25 U/mL。 4、操作步骤 4.1. 在3 mL比色皿中加入2.4 mL水,0.3 mL 试剂 I,0.1 mL试剂 II,37℃预热4 min。 4.2. 加入0.1 mL待测样品,0.1 mL DCPIP,迅 速混匀。 4.3. 在600 nm处,1分钟内吸光度的变化率 ∆As。 *用酶稀释液替代酶液,其它步骤相同,所得溶液吸光度为空白吸光度(∆Ab) ∆A=∆As-∆Ab 5、 活力计算 Vt:反应液总体积 (3.0 mL); Vs:酶液体积 (0.1 mL); 1.0:光路长度 (cm); df:稀释倍数; C:酶浓度 (mg/mL); 20.9:标准反应条件下,生色基团 600 nm处毫摩尔吸光系数 (cm2/μmol)。
生物活性
≥600 U/mg powder
来源
重组表达
预测分子量
28 kDa (SDS-PAGE)
表达系统
E. coli Accession #: P0A8G6,P0AGE6,P0A754,P39315,P0A756 | E. coli
种属
微生物(Microorganism)
Safety
「No Dangerous Attributes」
Related
「No upstream and downstream information yet」
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Research chemical ≥90%

Research chemical ≥90%; supplied for laboratory research, analysis, inspection, and scientific procurement use; specifications: ≥90%.

item number:rp216196-5KU
Product model:5KU
level: ≥90%
Lead Time:30days
sold 448 Items
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