聯(lián)系電話
上海勁馬實驗設(shè)備有限公司
中級會員·16年
D0006蛋白A/A蛋白/Protein A/SPA
| 參考價: | 面議 |
具體成交價以合同協(xié)議為準(zhǔn)- D0006 產(chǎn)品型號
- 品牌
- 生產(chǎn)商 廠商性質(zhì)
- 上海市 所在地
訪問次數(shù)：1641更新時間：2017-07-08 17:01:44
聯(lián)系我們時請說明是環(huán)保在線上看到的信息，謝謝!
- 聯(lián)系人：
- 馮經(jīng)理
- 電話：
- 021-60521817
- 手機(jī)：
- 13817140470
- 售后：
- 86-021-61107441
- 傳真：
- 86－021－64881400
- 地址：
- 上海市松江區(qū)漕河涇研展路455號B座
- 個性化：
- www.shjmsw.com
- 手機(jī)站：
- m.shjmsw.com
- 網(wǎng)址：
- www.shjmsw.com
掃一掃訪問手機(jī)商鋪
產(chǎn)品介紹
Description
Application Protein A may be conjugated with various reporter molecules including fluorescent dyes （FITC）, enzyme markers （peroxidase, β-galactosidase, alkaline phosphatase）, biotin, and colloidal gold without affecting the antibody binding site on the molecule. These conjugates are used to detect immunoglobulins in various immunochemical assays including western blotting, immunohistochemistry, and ELISA applications. In addition, protein A may be immobilized on a solid support such as agarose or acrylic beads for the purification of either polyclonal or monoclonal immunoglobulins. It is also routinely used for immunoprecipitation assays.
Biochem/physiol Actions Protein A is a highly stable cell surface receptor produced by several strains of Staphylococcus aureus. It consists of a single polypeptide chain of molecular weight 42 kDa, containing four repetitive domains rich in aspartic and glutamic acids but devoid of cysteine. It contains little or no carbohydrate and only 4 tyrosine residues and no tryptophans. Protein A is capable of binding to the Fc portion of immunoglobulins, especially IgGs, from a large number of species. One protein A molecule has been shown to bind at least 2 molecules of IgG simultaneously. The IgG binding domain of Protein A consists of three anti-parallel α-helicies, the third of which is disrupted when the protein is complexed with the Fc region of the immunoglobulins. Protein A will bind the Fc portion of human IgG subclasses, IgM, IgA and IgE; and mouse IgG1 （weakly）, IgG2a, and IgG2b. Protein A also binds IgGs from other species, including monkey, rabbit, pig, guinea pig, dog, and cat.
Protein A also participates in a number of different protective biological functions including anti-tumor, toxic, and carcinogenic activities. In addition to acting as an immunomodulator, it also has antifungal and antiparasitic properties.
Preparation Note Prepared from P 6031. Purified from culture medium of a protein A-secreting S. aureus strain
Properties
sterility aseptically filled
storage temp. 2-8°C
Safety
Personal Protective Equipment Eyeshields, Gloves, type N95 （US）, type P1 （EN143） respirator filter
WGK Germany 3
