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Merck

SAB4200745

Sigma-Aldrich

Anti-Protein A antibody, Mouse Monoclonal

clone SPA-27, purified from hybridoma cell culture

Synonym(e):

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

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About This Item

UNSPSC-Code:
12352203
NACRES:
NA.46

Biologische Quelle

mouse

Qualitätsniveau

Antikörperform

purified from hybridoma cell culture

Antikörper-Produkttyp

primary antibodies

Klon

SPA-27, monoclonal

Form

buffered aqueous solution

Mol-Gew.

~42 kDa

Speziesreaktivität

Staphylococcus aureus

Konzentration

~1.0 mg/mL

Methode(n)

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

Isotyp

IgG1

Versandbedingung

dry ice

Lagertemp.

−20°C

Posttranslationale Modifikation Target

unmodified

Allgemeine Beschreibung

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.

Spezifität

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

Immunogen

Protein A from Staphylococcus aureus Cowan I strain

Anwendung

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

Biochem./physiol. Wirkung

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.

Physikalische Form

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

Lagerung und Haltbarkeit

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.

Haftungsausschluss

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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Lagerklassenschlüssel

12 - Non Combustible Liquids

WGK

WGK 1

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable


Analysenzertifikate (COA)

Suchen Sie nach Analysenzertifikate (COA), indem Sie die Lot-/Chargennummer des Produkts eingeben. Lot- und Chargennummern sind auf dem Produktetikett hinter den Wörtern ‘Lot’ oder ‘Batch’ (Lot oder Charge) zu finden.

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Die Dokumentenbibliothek aufrufen

Spt6 is required for the fidelity of promoter selection
Doris S, et al.
Molecular Cell, 72(4), 687-699 (2018)
M Graille et al.
Proceedings of the National Academy of Sciences of the United States of America, 97(10), 5399-5404 (2000-05-11)
Staphylococcus aureus produces a virulence factor, protein A (SpA), that contains five homologous Ig-binding domains. The interactions of SpA with the Fab region of membrane-anchored Igs can stimulate a large fraction of B cells, contributing to lymphocyte clonal selection. To

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