| 产品描述: | Propidium monoazide is a photoreactive DNA-binding dye that preferentially binds to dsDNA. Propidium monoazide (PMA) prevents DNA from dead bacteria from being amplified during the PCR. PMA-PCR enhanced both the specificity and the sensitivity of PCR. Propidium monoazide is a click chemistry reagent, it contains an Azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing Alkyne groups. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups. |
| 体外研究: |
Propidium monoazide-PCR 1. Propidium monoazide 标记细菌 1) 在昏暗的房间中将 5 µL 2 mM 光反应染料 Propidium monoazide 添加到 500 mL 样品中,最终浓度为 20 μM/µL。 2)将样品在黑暗中孵育 5 min (用铝箔覆盖),同时轻轻摇动试管以确保充分混合。使用 PMA-LiteTM LED 光解装置进行光激活 10 min。 2. 提取细菌 DNA 3. 进行 PCR。 注:计算循环阈值 Ct 差值 (ΔCt),其中:ΔCt 活菌是经和未经 PMA 处理的活菌 Ct 值之间的差值,ΔCt 死菌是经和未经 PMA 处理的死菌 Ct 值之间的差值。理想的 PMA 处理条件应具有最高的 ΔCt 死菌和最低的 ΔCt 活菌。 |
| 参考文献: |
1. Mohamed Askar 1, et al. Propidium monoazide-polymerase chain reaction for detection of residual periprosthetic joint infection in two-stage revision. Mol Biol Rep. 2019 Dec;46(6):6463-6470. |
| 保存条件: |
-20°C,干燥, 避光 |
| 配置溶液浓度参考: |
|
1mg |
5mg |
10mg |
| 1 mM |
1.955 ml |
9.775 ml |
19.551 ml |
| 5 mM |
0.391 ml |
1.955 ml |
3.91 ml |
| 10 mM |
0.196 ml |
0.978 ml |
1.955 ml |
| 50 mM |
0.039 ml |
0.196 ml |
0.391 ml |
|
| 注意: |
部分产品我司仅能提供部分信息,我司不保证所提供信息的权威性,仅供客户参考交流研究之用。 |