Rock DNA Polymerase 是一款热稳定性保真聚合酶,相对于一般的保真酶,其具有显著的耐高温的特性,该聚合酶可在 100℃ 的环境中持续 6h 而活性无明显下降。Rock DNA Polymerase 不具有 3´→5´ 核酸外切酶活性,但较普通的 Taq 酶具有一定的保 真性(保真性约为普通 Taq 酶的 5倍),同时其还有链置换活性,基于这种特性,其可应用于基于 DOP-PCR 技术的 WGS建库方向。
产品特点
1.特异性好,更有利于目的条带的扩增,不易产生非特异性产物;
2.灵敏度及扩增效率高,能够对低输入量的模板进行快速有效的扩增;
3.均一性好,对不同 GC 含量以及不同片段范围的模板均能有效扩增,不改变产物的碱基和片段分布;
4.可选购 10×GC Enhancer,以对复杂模板达到较好的扩增效果,如高 GC 模板或具有发卡结构的模板;
5.具有链置换活性,可用于转座酶切建库的扩增流程或者基于 DOP 原理的 WGS 建库方向;
6.对 Mg²⁺比较耐受,可根据实验需要灵活调节 Mg²⁺浓度以获得最佳扩增效果。
FP1509151
| Component | 100U | 500U | Storage |
| FP1509151A | Rock DNA Polymerase (2.5 U/μL)
| 40μl | 200μl
| -20℃. Avoid freeze/thaw cycle. |
| FP1509151B | 5×Rock buffer (Mg²⁺ free)
| 400μl
| 2ml | -20℃. Avoid freeze/thaw cycle |
| FP1509151C | 200mM MgCl₂
| 20μl
| 100μl
| -20℃. Avoid freeze/thaw cycle |
PCR 扩增操作流程
实验前请将 5×Rock buffer(Mg²⁺ free)提前取出置于室温融化,振荡混匀并短暂离心,再与 Rock DNA Polymerase 一起置于冰上备用。当扩增高 GC 模板时,还应提前将 10×GC Enhancer 取出溶解并置于室温备用。
1.配制 PCR 体系(冰上操作)
| 组分 | 体积(25μl 体系) | 体积(50μl 体系) |
|---|
| 5×Rock buffer(Mg²⁺ free) | 5μl | 10μl |
| 10×GC Enhancer(高 GC 模板时使用) | 2.5μl | 5μl |
| 10mM dNTP | 0.5μl | 1μl |
| 200mM MgCl₂ | 0.25μl | 0.5μl |
| Primer(each 5μM) | 1-2.5μl | 2-5μl |
| Templates | —
| —
|
| Rock DNA Polymerase | 0.5μl | 1μl |
| ddH₂O | — | —
|
| Total | 25μl | 50μl |
2. 设置 PCR 仪反应程序(开启热盖,温度设置于 105℃)
注意事项
1.通常各引物使用的终浓度为 0.2μM,引物的 Tm 值一般设定在 55℃以上,可借助相关软件进行分析,使用理想的引物浓度和退火温度可获得理想的反应效果;
2.如果模板的 GC 含量较高(GC>55%),建议向体系中补加 10×GC Enhancer 进行反应,一般可对 GC 含量高达 78% 的模板进行有效扩增;
3.如果使用人基因组作为模板,通常 2ng~5ng 就能够满足扩增需求,若添加更高量的模板进行扩增,建议降低循环数;
4.若使用两步法程序进行扩增,建议退火 / 延伸范围为 68℃-75℃,延伸时间按 30-60sec/kb 计算。
Rock DNA Polymerase is a thermostable high-fidelity polymerase. Compared with ordinary high-fidelity enzymes, it exhibits remarkable thermostability, maintaining no significant loss of activity after continuous incubation at 100℃ for 6 hours. This polymerase lacks 3'→5' exonuclease activity but offers higher fidelity than conventional Taq polymerase (approximately 5 times the fidelity of ordinary Taq polymerase). Additionally, it possesses strand displacement activity, enabling its application in WGS library construction based on DOP-PCR technology.
Product Features
1.Excellent specificity: Facilitates the amplification of target bands and minimizes non-specific products.
2.High sensitivity and amplification efficiency: Enables rapid and effective amplification of low-input templates.
3.Good uniformity: Efficiently amplifies templates with different GC contents and fragment ranges without altering the base composition or fragment distribution of products.
4.Optional 10×GC Enhancer available: Ensures optimal amplification of complex templates, such as high-GC templates or those with hairpin structures.
5.Strand displacement activity: Suitable for amplification processes in transposase-based library construction or WGS library construction based on DOP principles.
6.Tolerant to Mg²⁺: Allows flexible adjustment of Mg²⁺ concentration according to experimental needs for optimal amplification results.
FP1509151
| Component | 100U | 500U | Storage |
| FP1509151A | Rock DNA Polymerase (2.5 U/μL)
| 40μl | 200μl
| -20℃. Avoid freeze/thaw cycle. |
| FP1509151B | 5×Rock buffer (Mg²⁺ free)
| 400μl
| 2ml | -20℃. Avoid freeze/thaw cycle |
| FP1509151C | 200mM MgCl₂
| 20μl
| 100μl
| -20℃. Avoid freeze/thaw cycle |
PCR Amplification Procedure
Before the experiment, remove the 5×Rock buffer (Mg²⁺ free) from storage and allow it to thaw at room temperature. Vortex thoroughly, centrifuge briefly, and place it on ice along with Rock DNA Polymerase for later use. For amplifying high-GC templates, also thaw the 10×GC Enhancer at room temperature in advance.
1. PCR Reaction System Preparation (Perform on ice)
Component
| Volume (25μl System)
| Volume (50μl System)
|
|---|
| 5×Rock buffer(Mg²⁺ free) | 5μl | 10μl |
| 10×GC Enhancer(for high-GC templates) | 2.5μl | 5μl |
| 10mM dNTP | 0.5μl | 1μl |
| 200mM MgCl₂ | 0.25μl | 0.5μl |
| Primer(each 5μM) | 1-2.5μl | 2-5μl |
| Templates | —
| —
|
| Rock DNA Polymerase | 0.5μl | 1μl |
| ddH₂O | — | —
|
| Total | 25μl | 50μl |
2. PCR Thermal Cycler Program Settings (Activate the heated lid and set to 105℃)
Notes
1.The final concentration of each primer is typically 0.2μM. The Tm value of primers is generally set above 55℃, which can be analyzed using relevant software. Optimal primer concentration and annealing temperature will yield ideal reaction results.
2.For templates with high GC content (GC > 55%), it is recommended to add 10×GC Enhancer to the reaction system. This allows effective amplification of templates with GC content up to 78%.
3.When using human genomic DNA as the template, 2ng~5ng is usually sufficient for amplification. For higher template inputs, reduce the number of PCR cycles.
4.If a two-step PCR program is used, the recommended annealing/extension temperature range is 68℃-75℃, with the extension time calculated as 30-60sec/kb.