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Key Documents

SAB4200853

Sigma-Aldrich

Anti-PBP2a of MRSA antibody, Mouse monoclonal

clone 38, purified from hybridoma cell culture

Sinônimo(s):

Anti-Beta-lactam-inducible penicillin-binding protein 2a

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About This Item

Código UNSPSC:
12352203
NACRES:
NA.43

forma do anticorpo

purified from hybridoma cell culture

Nível de qualidade

tipo de produto de anticorpo

primary antibodies

clone

38, monoclonal

forma

liquid

concentração

~1 mg/mL

técnica(s)

immunoblotting: 0.5-1 μg/mL using whole recombinant PBP2a protein

Isotipo

IgG1

Condições de expedição

dry ice

temperatura de armazenamento

−20°C

modificação pós-traducional do alvo

unmodified

Descrição geral

Infections caused by methicillin-resistant Staphylococcus aureus (MRSA) are a major concern cause for clinicians, presenting high mortality and morbidity rates compared to infections caused by methicillin-sensitive Staphylococci.2

Especificidade

Monoclonal Anti-PBP2a of MRSA antibody specifically recognizes PBP2a protein from Methicillin-resistant Staphylococcus aureus (MRSA). The antibody reacts with both denaturated recombinant PBP2a protein and bacteria lysates in Immunoblot.1 The antibody recognizes PBP2a in MRSA cells in both the exponential and stationary phases, however no cross reaction with methicillin-sensitive Staphylococcus aureus (PBP2a negative) and E. coli were seen.1

Aplicação

The antibody may be used in various immunochemical techniques including Immunoblotting1 (~76 kDa), ELISA1, Surface Plasmon Resonance (SPR)1 and Flow cytometry1.

Ações bioquímicas/fisiológicas

Resistance of S. aureus to methicillin and all beta-lactam antibiotics is due to the activity of PBP2a protein (i.e., penicillin binding protein2a) that is located in the cell wall of the resistant strains.3-4 PBP2a is encoded by mecA gene and belongs to a family of penicillin binding proteins (PBPs). PBPs are membrane-bound enzymes that catalyze the transpeptidation reaction necessary for cross-linkage of peptidoglycan chains.5-6 Contrary to all PBPs, PBP2a has low affinity for all ß-lactam antibiotics.7 Therefore, in the presence of ß-lactam antibiotics, while normal PBPs are blocked, the PBP2a is able to continue catalyze the transpeptidation reactions enabling cell wall synthesis.4 PBP2a protein is suggested to be a promising candidate for anti-MRSA vaccine development.8

forma física

Supplied as a solution in 0.01 M phosphate buffered saline pH 7.4, containing 15 mM sodium azide as a preservative.Antibody Concentration: ~ 1.0 mg/mL

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

Unless otherwise stated in our catalog  our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

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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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José Procópio M Senna et al.
Monoclonal antibodies in immunodiagnosis and immunotherapy, 34(4), 257-262 (2015-08-25)
Methicillin-resistant Staphylococcus aureus (MRSA) is a multidrug-resistant bacterium that causes serious infections worldwide. This pathogen is resistant to all beta lactam antibiotics due the presence of PBP2a, a transpeptidase enzyme that presents very low beta-lactam affinity. Here we report the
José P M Senna et al.
Vaccine, 21(19-20), 2661-2666 (2003-05-15)
Methicillin resistant Staphylococcus aureus (MRSA) are a major pathogen responsible for serious hospital infections worldwide. These bacteria are resistant to all beta-lactam antibiotics due to the production of an additional penicillin binding protein, the PBP2a, encoded by the mecA gene
Antimicrobial resistance: the example of Staphylococcus aureus.
Franklin D Lowy
The Journal of clinical investigation, 111(9), 1265-1273 (2003-05-03)
D M Roth et al.
Genetics and molecular research : GMR, 5(3), 503-512 (2006-11-23)
Methicillin-resistant Staphylococcus aureus (MRSA) is the major pathogen involved in nosocomial infections, leading to high rates of morbidity and mortality in hospitals worldwide. The methicillin resistance occurs due to the presence of an additional penicillin-binding protein, PBP2a, which has low

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