重组金黄色葡萄球菌蛋白A(SPA)PRO-356
- 北京启维益成科技有限公司2012年11月13日 16:07 点击:1463
Catalogue Number
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PRO-356
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Synonyms
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Immunoglobulin G-binding protein A'' IgG-binding protein A'' Staphylococcal protein A'' SPA.
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Introduction
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Protein A is a cell wall protein deriving from Staphylococcus aureus which exhibits unique binding properties for IgG from a variety of mammalian species and for some IgM and IgA as well. It binds with the Fc region of immunoglobulins through interaction with the heavy chain. It couples to a wide variety of reporter molecules including fluorescent dyes'' enzyme markers'' biotin'' colloidal gold and radioactive iodine without affecting the antibody binding site. Recombinant Protein A was developed to increase the specificity of the molecule for IgG and is widely used both in research and bioprocessing. The recombinant protein A is produced by expressing a modified protein A gene in E.coli. A specific purification process with strict quality control was taken to get the recombinant protein A with the purity of more than 98% '' no human IgG affinity step is used during validated fermentation and purification and devoid of bacterial contaminant found normally in native Protein A. (Free of Staphylococcus endotoxins and hemolysin).
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Description
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Recombinant Staphylococcal Protein A produced in E.Coli is a non-glycosylated'' Polypeptide chain having a molecular mass of 45 kDa.
Recombinant Staphylococcal Protein A is purified by proprietary chromatographic techniques. |
Source
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Escherichia Coli.
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Physical Appearance
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Sterile Filtered clear colorless solution.
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Formulation
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The protein solution contains no additives.
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Stability
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SPA should be stored at -20°C.
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Purity
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Greater than 98.0% as determined by RP-HPLC.
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Activity
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Greater than 95.0% binding activity to human IgG.
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Usage
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Prospec’s products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs'' agricultural or pesticidal products'' food additives or household chemicals.
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