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SAB4200745

Sigma-Aldrich

Anti-Protein A antibody, Mouse Monoclonal

clone SPA-27, purified from hybridoma cell culture

Sinônimo(s):

Anti-IgG binding protein A, Anti-SpA, Anti-Staphylococcal protein A, Anti-Staphylococcus ayreus protein A

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About This Item

Código UNSPSC:
12352203
NACRES:
NA.46

fonte biológica

mouse

Nível de qualidade

forma do anticorpo

purified from hybridoma cell culture

tipo de produto de anticorpo

primary antibodies

clone

SPA-27, monoclonal

forma

buffered aqueous solution

peso molecular

~42 kDa

reatividade de espécies

Staphylococcus aureus

concentração

~1.0 mg/mL

técnica(s)

dot blot: suitable
flow cytometry: suitable
immunoblotting: suitable
immunofluorescence: suitable
immunoprecipitation (IP): 2.5-5 μg/test using purified protein A from Staphylococcus aureus
indirect ELISA: 0.25-0.5 μg/mL using 10 μg/mL of protein A from Staphylococcus aureus for coating. To reduce nonspecific binding we recommend on detection using a secondary anti-mouse, F(ab’)2 fragment antibody

Isotipo

IgG1

Condições de expedição

dry ice

temperatura de armazenamento

−20°C

modificação pós-traducional do alvo

unmodified

Descrição geral

Staphylococcus aureus protein A, also known as SpA or IgG binding protein A, is a 42 kDa single chain polypeptide isolated from the cell wall of S. aureus Cowan I strain. It consists of a single polypeptide chain containing five repetitive immunoglobulin-binding domains, rich in aspartic and glutamic acids.Anti-Protein A antibody, Mouse monoclonal (mouse IgG1 isotype) is derived from the SPA-27 hybridoma produced by the fusion of mouse myeloma cells and splenocytes from a BALB/c immunized mouse.

Especificidade

Monoclonal Anti-Protein A specifically recognizes Protein A from Staphylococcus aureus bacteria.

Imunogênio

Protein A from Staphylococcus aureus Cowan I strain

Aplicação

The antibody may be used in various immunochemical techniques including immunoblotting, dot blot, ELISA, immunofluorescence, immunoprecipitation and flow cytometry (FACS).

Ações bioquímicas/fisiológicas

Protein A is considered as a universal reagent in biochemistry and immunology, due to its affinity for the Fc region of many mammalian immunoglobulins. It is used for different applications such as purification of immunoglobulins by affinity chromatography, cell surface studies, radioimmunoassay (RIA), enzyme immunoassay (EIA), immunoprecipitations and many other procedures. It can be used either in its native form, conjugated to various markers or serve as a tag for a specific protein of interest. In addition, protein A has low affinity to mouse monoclonal antibodies from IgG1 isotype. Thus, a monoclonal anti-protein A antibody of the mouse IgG1 isotype has an advantage due to its specific targeting and binding to protein A via its Fab fragment. Monoclonal anti-protein A antibody can serve a useful tool for quantification and visualization of S. aureus bacteria and bacterial contaminations in different examined samples and for detection of protein A tagged proteins.

forma física

Solution in 0.01 M phosphate buffered saline, pH 7.4, containing 15 mM sodium azide.

Armazenamento e estabilidade

For continuous use, store at 2-8 °C for up to one month. For extended storage, freeze in working aliquots. Repeated freezing and thawing is not recommended. If slight turbidity occurs upon prolonged storage, clarify the solution by centrifugation before use. Working dilution samples should be discarded if not used within 12 hours.

Exoneração de responsabilidade

This product is for R&D use only, not for drug, household, or other uses. Please consult the material safety data sheet (MSDS) for information regarding hazards and safe handling practices.

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Código de classe de armazenamento

12 - Non Combustible Liquids

Classe de risco de água (WGK)

WGK 1

Ponto de fulgor (°F)

Not applicable

Ponto de fulgor (°C)

Not applicable


Certificados de análise (COA)

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