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。
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)