Product Description
Rat C1q is purified from pooled normal rat serum. C1q is part of the C1 complex, which is thefirst complement component in the classical pathway of complement. The C1 complex is a non-covalent assembly ofthree different proteins (C1q, C1r, and C1s) bound together in acalcium-dependent complex. C1q has sixextended arms with domains at the end of each arm that bind to the Fc domainsof immunoglobulins such as IgG or IgM.When antibodies bind to antigens, forming immune complexes, they clusterallowing two or more of the six C1q arms to bind to the Fc domains ofantibodies. Rat IgG2 is very efficientwhen compared to IgG1 in activating complement (Medgyesi, G.A et., al., 1981).This is in contrast to the human system in which IgG1 activates complement butnot IgG2 (Redpath, S. et. al., 1998). Thebinding of multiple arms of C1q to immune complexes causes the two C1r proteinsin the complex (protease zymogens) to auto-activate. The activated C1r proteasescleave and activate the two C1s protease zymogens in the complex. The activated C1s cleaves complementcomponent C4 releasing C4a and initiating covalent attachment of C4b to theactivating surface. Activated C1s alsocleaves C2 and the larger fragment of C2 binds to the surface-attached C4bforming C4b,C2a, the C3/C5 convertase of the classical pathway.
Rat IgG1 cannot activate complement whereas rat IgG2 does.
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USANA的产品荣获美国药典(PDR)推荐、加拿大药典(CPS)推荐、香港药品手册(MIMS)推荐、台湾药品手册(MIMS)推荐等八个国家的药店作为医生处方签的依据
· USANA以96.1的最高分荣获第三版《北美营养品评鉴指南》杂志(Comparative Guide to Nutritional Supplement)第1名。
所以建议你购买USANA心脏宝中的辅酶q10,专利水溶性配方高于市面同类产品4倍功效,更容易被人体吸收。
那糖酵解中依赖NAD的酶不是要在线粒体内反应?
求助,做蛋白酶抑制试验,胃蛋白酶抑制剂不溶于水,需要先溶于甲醇再加入酶液里面吗,还是直接加入酶液里面就可以起作用呢,求大神指点啊
1、洗碗用的洗洁精,含脂肪酶,能快速水解油脂,还可能含其他酶成分
2、洗头用的洗发水,含脂肪酶,能快速水解油脂,还可能含其他酶成分
3、洗澡用的沐浴露,含脂肪酶,能快速水解油脂,还可能含其他酶成分
4、洗衣用的洗衣粉或洗衣液,含有多种酶,比如脂肪酶、蛋白酶等
除了以上用的频繁外,还有一些可能用到的,
比如某些促进消化的药片,含有脂肪酶、蛋白酶、淀粉酶等
厨房用的嫩肉粉,含有蛋白酶等
打字不易,如满意,望采纳。
Author:Shih IeM, Wang TL.
Resource:Cancer Res. 2007 Mar 1;67(5):1879-82.
Impact Factor:8.0(2005)
Abstract:The Notch signaling pathway represents a critical component in the molecular circuits that control cell fate during development. Aberrant activation of this pathway contributes to tumorigenesis. The role of Notch in human cancer has been highlighted recently by the presence of activating mutations and amplification of Notch genes in human cancer and by the demonstration that genes in the Notch signaling pathway could be potential therapeutic targets. It has become clear that one of the major therapeutic targets in the Notch pathway are the Notch receptors, in which gamma-secretase inhibitors prevent the generation of the oncogenic (intracellular) domain of Notch molecules and suppress the Notch activity. This review article summarizes the biological roles of Notch molecules in cancer development with special emphasis on the promise and challenges in applying gamma-secretase inhibitors as a new line of targeted therapeutic agents.
PMID: 17332312
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