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  • PMA

    產(chǎn)品貨號: P4036

    產(chǎn)品規(guī)格: 1 mg

    目錄價(jià)(元):1061

    大包裝詢價(jià)


產(chǎn)品概述:

產(chǎn)品參數(shù)
外觀:可溶于DMSO、DMF或水的深紅色固體
Ex (pH 3) = 464 nm (before photolysis)
Ex/Em (after photocrosslinking to nucleic acid) = 510/610 nm
分子式:C27H32Cl2N6
分子量:511.5

儲(chǔ)存條件
4℃避光保存,有效期見外包裝。

產(chǎn)品介紹
PMA是一種高親和性的DNA結(jié)合染料,該染料本身具有微弱的熒光,但與核酸結(jié)合后可以發(fā)出更為明亮的熒光。它尤其與雙鏈DNA具有高親和性。PMA不具有細(xì)胞膜滲透性,因此可選擇性地修飾膜受損的死細(xì)胞的 DNA。PMA修飾的DNA經(jīng)藍(lán)光(~464 nm)光解后,PMA上的光反應(yīng)性疊氮基轉(zhuǎn)化為高反應(yīng)性氮烯自由基,與DNA結(jié)合位點(diǎn)附近的任何烴部分反應(yīng)形成穩(wěn)定的共價(jià)氮碳鍵,從而導(dǎo)致永久性 DNA 修飾(圖1)。該修飾過程會(huì)使DNA不溶,并使其在隨后的基因組DNA提取過程中與細(xì)胞碎片一起丟失,進(jìn)而阻礙死細(xì)胞中目標(biāo)DNA的PCR擴(kuò)增。殘留在溶液中未結(jié)合的PMA,在強(qiáng)光照射下與水分子反應(yīng)分解成無交聯(lián)活性的羥胺化合物,使羥胺不再能夠共價(jià)結(jié)合DNA,從而不影響PCR擴(kuò)增。這個(gè)特性使得 PMA 可以通過實(shí)時(shí)定量 PCR(qPCR)的手段,檢測多種樣本類型包括:細(xì)菌、生物膜、酵母、真菌、病毒和真核細(xì)胞;與qPCR、NGS、Sanger測序和LAMP技術(shù)相結(jié)合,廣泛應(yīng)用在食品和水安全和環(huán)境測試中。

注意事項(xiàng)
1. 使用前請將產(chǎn)品瞬時(shí)離心至管底,再進(jìn)行后續(xù)實(shí)驗(yàn)。
2. 試劑盒組分中含有熒光染料,使用及保存過程中注意避光。
3. 為了您的安全和健康,請穿實(shí)驗(yàn)服并戴一次性手套操作。


說明書:


 UE-P4036    

使用本產(chǎn)品的文獻(xiàn):


參考文獻(xiàn)
1.Detection and quantification of viable Bacillus cereus group species in milk by propidium monoazide quantitative real-time PCR
應(yīng)用方向:Bacillus cereus(蠟樣芽孢桿菌)

2.Persistence of Bacteroides ovatus under simulated sunlight irradiation
應(yīng)用方向Bacteroides ovales(卵巢桿菌)

3.Advantageous Direct Quantification of Viable Closely Related Probiotics inPetitSuisse Cheeses under In Vitro Gastrointestinal Conditions by Propidium Monoazide - qPCR
應(yīng)用方向Bifidobacterium animalis(動(dòng)物雙歧桿菌)

4.Assessing the diagnostic importance of nonviable bacterial cells in respiratory infections
應(yīng)用方向Burkholderia cepacia(赤胸鯊)

5.Impact of oxidative stress defense on bacterial survival and morphological change in Campylobacter jejuni under aerobic conditions
應(yīng)用方向Campylobacter jejuni(空腸彎曲菌)

6.Viability-PCR Shows That NAAT Detects a High Proportion of DNA from Non-Viable Chlamydia trachomatis
應(yīng)用方向Chlamydia trachomatis(沙眼衣原體 )

7.Digestibility and prebiotic properties of potato rhamnogalacturonan I polysaccharide and its galactose-rich oligosaccharides/oligomers
應(yīng)用方向Clostridium leptum(瘦肉梭菌)

8. Survival and persistence of host-associated Bacteroidales cells and DNA in comparison with Escherichia coli and Enterococcus in freshwater sediments as quantified by PMA-qPCR and qPCR
應(yīng)用方向Enterrococcus spp(腸球菌屬)

9.Detection of viable Escherichia coli O157:H7 in ground beef by propidium monoazide real-time PCR
應(yīng)用方向Escherichia coli(大腸桿菌)

10.Viability determination of Helicobacter pylori using propidium monoazide quantitative PCR
應(yīng)用方向Helicobacter pylori(幽門螺桿菌)

11.Probiotic bacteria survive in Cheddar cheese and modify populations of other lactic acid bacteria
應(yīng)用方向Lactobacillus acidophilus(嗜酸乳桿菌)

12.Fate of Viable but Nonculturable Listeria monocytogenes in Pig Manure Microcosms
應(yīng)用方向Listeria monocytogenes(單球菌)

13.A multicenter study of viable PCR using propidium monoazide to detect Legionella in water samples
應(yīng)用方向Legionella pneumophila(嗜肺軍團(tuán)菌)

14.Propidium monoazide and Xpert MTB/RIF to quantify Mycobacterium tuberculosis cells
應(yīng)用方向Mycobacterium tuberculosis(結(jié)核分枝桿菌)

15.Determination of the effects of medium composition on the monochloramine disinfection kinetics of Nitrosomonas europaea by the propidium monoazide quantitative PCR and Live/Dead BacLight methods
應(yīng)用方向Nitrosomonas europae(歐洲硝酸銨)

16.Study and Understanding Behavior of Alginate-Inulin Synbiotics Beads for Protection and Delivery of AntimicrobialProducing Probiotics in Colonic Simulated Conditions
應(yīng)用方向Pediococcus acidilactici(酸乳球菌)

17.Quantification of Pseudomonas aeruginosa in multispecies biofilms using PMA-qPCR
應(yīng)用方向Pseudomonas aeruginosa(銅綠假單胞菌)

18.Multiplex PCR coupled with propidium monoazide for the detection of viable Cronobacter sakazakii, Bacillus cereus, and Salmonella spp. in milk and milk products
應(yīng)用方向Salmonella enterica(腸炎沙門菌)

19.Peptoid Efficacy against Polymicrobial Biofilms Determined by Using Propidium Monoazide-Modified Quantitative PCR
應(yīng)用方向Staphylococcus aureus(金黃色葡萄球菌)

20.Method to quantify live and dead cells in multi-species oral biofilm by real-time PCR with propidium monoazide
應(yīng)用方向Streptococcus oralis(口腔鏈球菌)

21. OxyRactivated expression of Dps is important for Vibrio cholerae oxidative stress resistance and pathogenesis
應(yīng)用方向Vibrio cholerae(霍亂弧菌)

22. A New Physiological Role for the DNA Molecule as a Protector against Drying Stress in Desiccation-Tolerant Microorganisms
應(yīng)用方向Microbacterium 3J1(微桿菌3J1)

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