{{'Search' | translate}}
 

Peroxidase from horseradish

辣根过氧化物酶

公司名称: Sigma-Aldrich
产品编号: P8125
Bio-protocol()
Company-protocol()
Other protocol()

Determination of H2O2 Generation by pHPA Assay
Author:
Date:
2016-11-20
[Abstract]  The production of reactive oxygen species, including H2O2, is a process that can be used in signaling, cell death, or immune response. To quantify oxidative stress in cells, a fluorescence technique has been modified from a previously described method to measure H2O2 release from cells (Panus et al., 1993; Murthy et al., 2010; Larson-Casey et al., 2016; Larson-Casey et al., 2014; He et al., 2011). This assay takes advantage of H2O2-mediated oxidation of horseradish peroxidase (HRP) ... [摘要]  包括H 2 O 2 O 2的活性氧物质的产生是可用于信号传导,细胞死亡或免疫应答的过程。为了量化细胞中的氧化应激,已经从先前描述的方法修改了荧光技术以测量来自细胞的H 2 O 2 O 2释放(Panus等人, 2011; Larson-Casey等人,1993; Murthy等人,2010; Larson-Casey等人,2016; Larson-Casey等人 2014; He 等人,2011)。该测定利用了辣根过氧化物酶(HRP)对配合物I的H 2 O 2 O 2 - 介导的氧化,这又将对羟基苯乙酸(pHPA)氧化成稳定的荧光pHPA二聚体(2,2'-二羟基 - 联苯-5,5'-二乙酸酯[(pHPA)2])。 H 2 O 2 O 2依赖性HRP介导的pHPA氧化是用于定量H 2 O 2 O 2的灵敏和特异性的测定,/sub>从细胞释放。该测定可以测量来自全细胞,线粒体或NADPH氧化酶的H 2 O 2亚型释放。

[背景] (O 2→O 2 - )的超导阴离子(O 2 2-)的歧化导致的强烈的H 2 O 2 O 2 - 非 - 酶促反应,其中所述反应混合物是非酶促的。与O 2 - 不同,H 2 O 2可以容易地穿过膜,因此其能够氧化多个分子。 ...

Luminol-based Assay for Detection of Immunity Elicitor-induced Hydrogen Peroxide Production in Arabidopsis thaliana Leaves
Author:
Date:
2015-12-20
[Abstract]  In Arabidopsis thaliana, one of the very early immune-related responses induced after elicitor perception is the oxidative burst, i.e., reactive oxygen species (ROS) generation including superoxide anion and hydrogen peroxide (H2O2). ROS production plays different roles in a wide range of biotic and abiotic stress responses, including the closure of stomata and the regulation of cell expansion. In particular, elicitor-induced H2O2 is produced mainly by the membrane localized NAD(P)H oxidases RESPIRATORY BURST OXIDASE HOMOLOGUE D ... [摘要]  在拟南芥中,在诱导剂感知之后诱导的非常早期的免疫相关反应之一是氧化爆发,即包括超氧阴离子和过氧化氢的活性氧(ROS)产生(H 2 O 2 O 2)。 ROS产生在宽范围的生物和非生物应激反应中起不同的作用,包括气孔的闭合和细胞扩增的调节。特别地,诱导剂诱导的H 2 O 2 O 2主要由膜定位的NAD(P)H氧化酶呼吸道刺激氧化酶同源物D和F产生。在该方案中,我们描述了简单和可再现的基于鲁米诺/过氧化物酶的测定,以检测和评价在拟南芥叶盘中产生的H 2 O 2亚型的免疫相关累积(OGs),鞭毛蛋白(flg22)或延伸因子 - 热不稳定的(EF-Tu-elf18)处理。该方法基于检测在H 2 O 2 O 2存在下在辣根过氧化物酶(HRP) - 催化的鲁米诺分子氧化后产生的激发发光氨分子发出的发光, sub>。发光的水平以及持续时间与由引发的叶盘产生的H 2 O 2 O 2的量成比例。

产品评论