产品概述:
产品参数
外观:橙红色液体
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
储存条件
-20℃避光保存,有效期见外包装。
产品介绍
PMA是一种高亲和性的DNA结合染料,该染料本身具有微弱的荧光,但与核酸结合后可以发出更为明亮的荧光。它尤其与双链DNA具有高亲和性。PMA不具有细胞膜渗透性,因此可选择性地修饰膜受损的死细胞的 DNA。PMA修饰的DNA经蓝光(~464 nm)光解后,PMA上的光反应性叠氮基转化为高反应性氮烯自由基,与DNA结合位点附近的任何烃部分反应形成稳定的共价氮碳键,从而导致永久性 DNA 修饰(图1)。该修饰过程会使DNA不溶,并使其在随后的基因组DNA提取过程中与细胞碎片一起丢失,进而阻碍死细胞中目标DNA的PCR扩增。残留在溶液中未结合的PMA,在强光照射下与水分子反应分解成无交联活性的羟胺化合物,使羟胺不再能够共价结合DNA,从而不影响PCR扩增。这个特性使得 PMA 可以通过实时定量 PCR(qPCR)的手段,检测多种样本类型包括:细菌、生物膜、酵母、真菌、病毒和真核细胞;与qPCR、NGS、Sanger测序和LAMP技术相结合,广泛应用在食品和水安全和环境测试中。
注意事项
1. 使用前请将产品瞬时离心至管底,再进行后续实验。
2. 试剂盒组分中含有荧光染料,使用及保存过程中注意避光。
3. 为了您的安全和健康,请穿实验服并戴一次性手套操作。
使用本产品的文献:
参考文献
1.Detection and quantification of viable Bacillus cereus group species in milk by propidium monoazide quantitative real-time PCR
应用方向:Bacillus cereus(蜡样芽孢杆菌)
2.Persistence of Bacteroides ovatus under simulated sunlight irradiation
应用方向:Bacteroides ovales(卵巢杆菌)
3.Advantageous Direct Quantification of Viable Closely Related Probiotics inPetitSuisse Cheeses under In Vitro Gastrointestinal Conditions by Propidium Monoazide - qPCR
应用方向:Bifidobacterium animalis(动物双歧杆菌)
4.Assessing the diagnostic importance of nonviable bacterial cells in respiratory infections
应用方向:Burkholderia cepacia(赤胸鲨)
5.Impact of oxidative stress defense on bacterial survival and morphological change in Campylobacter jejuni under aerobic conditions
应用方向:Campylobacter jejuni(空肠弯曲菌)
6.Viability-PCR Shows That NAAT Detects a High Proportion of DNA from Non-Viable Chlamydia trachomatis
应用方向:Chlamydia trachomatis(沙眼衣原体 )
7.Digestibility and prebiotic properties of potato rhamnogalacturonan I polysaccharide and its galactose-rich oligosaccharides/oligomers
应用方向: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
应用方向:Enterrococcus spp(肠球菌属)
9.Detection of viable Escherichia coli O157:H7 in ground beef by propidium monoazide real-time PCR
应用方向:Escherichia coli(大肠杆菌)
10.Viability determination of Helicobacter pylori using propidium monoazide quantitative PCR
应用方向:Helicobacter pylori(幽门螺杆菌)
11.Probiotic bacteria survive in Cheddar cheese and modify populations of other lactic acid bacteria
应用方向:Lactobacillus acidophilus(嗜酸乳杆菌)
12.Fate of Viable but Nonculturable Listeria monocytogenes in Pig Manure Microcosms
应用方向:Listeria monocytogenes(单球菌)
13.A multicenter study of viable PCR using propidium monoazide to detect Legionella in water samples
应用方向:Legionella pneumophila(嗜肺军团菌)
14.Propidium monoazide and Xpert MTB/RIF to quantify Mycobacterium tuberculosis cells
应用方向:Mycobacterium tuberculosis(结核分枝杆菌)
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
应用方向:Nitrosomonas europae(欧洲硝酸铵)
16.Study and Understanding Behavior of Alginate-Inulin Synbiotics Beads for Protection and Delivery of AntimicrobialProducing Probiotics in Colonic Simulated Conditions
应用方向:Pediococcus acidilactici(酸乳球菌)
17.Quantification of Pseudomonas aeruginosa in multispecies biofilms using PMA-qPCR
应用方向:Pseudomonas aeruginosa(铜绿假单胞菌)
18.Multiplex PCR coupled with propidium monoazide for the detection of viable Cronobacter sakazakii, Bacillus cereus, and Salmonella spp. in milk and milk products
应用方向:Salmonella enterica(肠炎沙门菌)
19.Peptoid Efficacy against Polymicrobial Biofilms Determined by Using Propidium Monoazide-Modified Quantitative PCR
应用方向:Staphylococcus aureus(金黄色葡萄球菌)
20.Method to quantify live and dead cells in multi-species oral biofilm by real-time PCR with propidium monoazide
应用方向:Streptococcus oralis(口腔链球菌)
21. OxyRactivated expression of Dps is important for Vibrio cholerae oxidative stress resistance and pathogenesis
应用方向:Vibrio cholerae(霍乱弧菌)
22. A New Physiological Role for the DNA Molecule as a Protector against Drying Stress in Desiccation-Tolerant Microorganisms
应用方向:Microbacterium 3J1(微杆菌3J1)