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主要文件

SAB4200853

Sigma-Aldrich

Anti-PBP2a of MRSA antibody, Mouse monoclonal

clone 38, purified from hybridoma cell culture

别名:

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

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About This Item

分類程式碼代碼:
12352203
NACRES:
NA.43

抗體表格

purified from hybridoma cell culture

品質等級

抗體產品種類

primary antibodies

無性繁殖

38, monoclonal

形狀

liquid

濃度

~1 mg/mL

技術

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

同型

IgG1

運輸包裝

dry ice

儲存溫度

−20°C

目標翻譯後修改

unmodified

一般說明

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

特異性

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

應用

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

生化/生理作用

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

外觀

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

儲存和穩定性

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.

免責聲明

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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儲存類別代碼

12 - Non Combustible Liquids

水污染物質分類(WGK)

WGK 1

閃點(°F)

Not applicable

閃點(°C)

Not applicable


历史批次信息供参考:

分析证书(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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