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Human IgM protein
品牌:GeneTex
货号:GTX01553-pro 规格:1mg 目录价:¥2700
产品详情
产品名称:
Human IgM protein
克隆号:
纯化方式:
Purified by delipidation, selective precipitation, and tandem molecular sieve chromatography followed by extensive dialysis.
偶联:
Unconjugated
产品浓度:
1 mg/ml (Please refer to the vial label for the specific concentration.)
表达系统:
Native protein from human serum
保存温度:
Store as concentrated solution. Aliquot and store at -20ºC or below. Avoid freeze-thaw cycles.
运输温度:
dry ice
产品形式:
Liquid
存储溶液:
0.1M Tris Chloride pH8.0, 0.5M Sodium Chloride, 0.1% Sodium azide.
产地:
美国
功能与背景:
Immunoglobulins (Ig) are the antigen recognition molecules of B cells. An Ig molecule is made up of 2 identical heavy chains and 2 identical light chains (see MIM 147200) joined by disulfide bonds so that each heavy chain is linked to a light chain and the 2 heavy chains are linked together. Each Ig heavy chain has an N-terminal variable (V) region containing the antigen-binding site and a C-terminal constant (C) region, encoded by an individual C region gene, that determines the isotype of the antibody and provides effector or signaling functions. The heavy chain V region is encoded by 1 each of 3 types of genes: V genes (see MIM 147070), joining (J) genes (see MIM 147010), and diversity (D) genes (see MIM 146910). The C region genes are clustered downstream of the V region genes within the heavy chain locus on chromosome 14. The IGHM gene encodes the C region of the mu heavy chain, which defines the IgM isotype. Naive B cells express the transmembrane forms of IgM and IgD (see IGHD; MIM 1471770) on their surface. During an antibody response, activated B cells can switch to the expression of individual downstream heavy chain C region genes by a process of somatic recombination known as isotype switching. In addition, secreted Ig forms that act as antibodies can be produced by alternative RNA processing of the heavy chain C region sequences. Although the membrane forms of all Ig isotypes are monomeric, secreted IgM forms pentamers, and occasionally hexamers, in plasma (summary by Janeway et al., 2005).[supplied by OMIM, Aug 2010]
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