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名称
UltraBio™ PCR SuperMix
别名
UltraBio™ PCR 超级混合物
英文名称
UltraBio™ PCR SuperMix
货号
P751565-100T
包装规格
100T
浓度
Green, 2X
储存温度
-20°C储存,避免反复冻融
运输条件
超低温冰袋运输
稳定性与储存
-20℃保存至少一年有效。适当避免反复冻融。如需频繁使用,可取适量存放于4℃,至少7天内有效。
产品介绍
阿拉丁的UltraBio™ PCR SuperMix (Green, 2X)是一种使用特别便捷的含有蓝色和橙色染料(电泳位置分别约4kb和50bp)的2倍浓度的PCR预混液,含有2X新型Taq DNA Polymerase、2X PCR Buffer、2X dNTP和2X Loading Buffer,只需加入模板DNA、引物和水即可进行PCR扩增,并且扩增完毕后可以直接上样电泳。主要适用于cDNA或基因组DNA等的常规PCR扩增,特别适合于定性或半定量的PCR扩增,也可用于长度小于2kb的DNA片段的扩增和克隆。UltraBio™ PCR SuperMix (Green, 2X)中已经含有所有的通用组分,用户只需自备引物、模板DNA和水即可进行PCR扩增。大大简化了PCR操作,使操作更加快捷,也减少了PCR操作过程中可能导致的污染,使PCR的重复性更好。UltraBio™ PCR SuperMix (Green, 2X)可以扩增出长达5kb的片段,但通常更适合用于扩增2kb以下的DNA片段。本产品中加入了蓝色和橙色的电泳示踪染料(整体呈现绿色),其在浓度为1%琼脂糖胶中的迁移位置分别大约位于4kb和50bp处。PCR结束后可直接进行电泳检测,无需再添加上样缓冲液。蓝色和橙色示踪染料不会影响对相应DNA条带的观察和检测。本产品稳定性高。本产品使用筛选获得的新型Taq DNA Polymerase,具有超高的酶活稳定性。经测试,37度放置1周不影响酶活性,扩增效果强劲,特别适合PCR分析鉴定和短片段的扩增和克隆。反复冻融15次后对PCR的扩增效果无显著影响。反复冻融15次前后,使用不同引物扩增100-1500bp间不同长度目的片段的效果如图1所示。图1.本产品反复冻融15次前后扩增不同长度产物的效果图。A. 反复冻融前本产品进行PCR的扩增结果。B. 反复冻融15次后的本产品进行PCR的扩增结果。除本产品是否反复冻融15次外,A和B的反应体系完全相同,电泳的上样量也相同。实际检测效果会因实验条件、检测仪器等的不同而存在差异,图中效果仅供参考。本产品扩增获得的PCR产物带有3'-dA overhangs的粘性末端,可直接用于和T载体连接进行TA克隆。每毫升UltraBio™ PCR SuperMix若用于50微升的PCR反应体系,足够用于40个反应;若用于20微升的PCR反应体系,足够用于100个反应。 注意事项 : 由于PCR反应非常灵敏,可使目的基因扩增超过1000万倍,在设置PCR反应时请注意避免微量待扩增DNA的污染,并尽量考虑设置不加模板的空白对照以确认是否有待扩增DNA的污染。本产品中的新型Taq DNA polymerase在PCR过程中每个循环的出错几率约为2×10-5,对于大于1kb的DNA片段的克隆推荐使用出错几率更低的DNA聚合酶,例如 DNA Polymerase 、 Plus DNA Polymerase 、Q6U™ High-Fidelity DNA Polymerase 、Extra-long DNA Polymerase 或Plus Extra-long DNA Polymerase 等。对于普通的PCR或RT-PCR进行定性或定量检测,本产品是非常理想的选择。尽管本产品经过15次反复冻融后仍具有和冻融前几乎相同的PCR扩增效果,但仍宜适当避免反复冻融本产品,多次反复冻融可能使产品性能下降。使用本产品前,一定要完全融化,并上下颠倒轻轻混匀后才能使用,并尽量避免产生气泡。本产品仅限于专业人员的科学研究用,不得用于临床诊断或治疗,不得用于食品或药品,不得存放于普通住宅内。为了您的安全和健康,请穿实验服并戴一次性手套操作。 使用说明 : 1.PCR反应体系的设置: a.室温融解Easy-Load™ PCR SuperMix (Green, 2X),上下颠倒轻轻混匀后低速离心数秒。b.参考下表在冰浴上设置PCR反应体系: Reagent Final Concentration Volume Volume Nuclease-Free Water - (21-x)µl (8.4-y)µl TemplateDNA 10pg-1µg xµl yµl PrimerMix(10µM) 0.8µM 4µl 1.6µl Easy-Load™ PCR SuperMix (Green, 2X) 1X 25µl 10µl TotalVolume - 50µl 20µl 注意:(a) 通常引物的终浓度为0.2μM时可获得良好的检测效果,也可以根据情况在0.1-1.0μM范围内调整引物的终浓度。扩增效率不高的情况下,可提高引物的浓度;发生非特异性反应时,可降低引物浓度。(b) 对于不同类型的模板在50µl反应体积中推荐用量如下:哺乳动物基因组DNA:0.1-1µg;大肠杆菌基因组DNA:10-100ng;质粒DNA:0.1-10ng。过多的模板DNA容易导致非特异性的PCR产物。c.用移液器轻轻吹打混匀或轻微Vortex混匀,室温离心数秒,使液体积聚于管底。d.如果所使用的PCR仪有热盖则省略本步骤。如果PCR仪没有热盖,则在管内滴入一滴矿物油(mineral oil,ST275)。e.把设置好的PCR反应管置于PCR仪上,开始PCR反应。2.PCR反应参数的设置可以参考如下示例:STEP1(起始变性): 94℃ 3min STEP2(变性): 94℃ 30sec STEP3(退火): 55℃ 30sec STEP4(延伸): 68℃ 2min/kb STEP5(循环): Go To STEP2 for 30cyclesSTEP6(最终延伸): 68℃ 10min STEP7(临时保存): 4℃ forever 注意:a.PCR反应的设置需根据模板、引物、PCR产物的长度和GC含量等条件的不同,设定不同的PCR反应条件包括温度、时间和循环数等。b.STEP4(延伸)的时间设置需根据PCR产物的长度进行设置,通常每kb产物的延伸时间为2分钟。例如PCR产物的长度为1kb,则延伸时间可以设置为2分钟,PCR产物的长度为2kb,则延伸时间可以设置为4分钟,以此类推。 c.对于初次进行的PCR,为尽量确保可以扩增出预期的PCR产物,可以把循环数设置为35。对于需进行半定量或定量的PCR反应循环数一定要进行适当优化,使PCR反应没有达到平台期。3.结果检测:PCR结束后直接取5-10µl进行电泳检测,无需添加上样缓冲液。 常见问题: 1.PCR产物非常少或没有特异性条带。a.引物设计不佳是PCR过程中最常见的问题。请选择适当的引物设计软件进行引物设计,注意引物的GC含量、二级结构、二聚体、退火温度、长度、特异性等方面的问题。在加入酶切位点等的引物中,一定要注意加入酶切位点等后整条引物的GC含量、二级结构、二聚体、退火温度、长度、特异性等方面的问题。在原有引物效果不佳的情况并且阳性对照引物可以正常工作的情况下,可以考虑更换引物。b.待扩增片段GC含量偏高。GC含量较高的情况下PCR会变得相对比较困难,此时可以使用适合扩增高GC含量DNA片段的GC-rich buffer,并相应地根据GC-rich buffer的要求或说明调整PCR反应参数的设置。c.长片段扩增。尽管本新型Taq DNA polymerase可以扩增最长达5kb的DNA片段,但大多数时候比较适合扩增2-3kb以下的片段,更长片段的扩增推荐使用其它更适合长片段扩增的DNA聚合酶或适当优化引物和PCR反应参数。d.PCR反应设置时在室温进行容易导致非特异性条件。推荐在冰浴上设置PCR反应。e.由于引物存在一定的二级结构或存在一定的引物二聚体,或引物偏短,导致退火效果不佳。此时可以采用Touch down等方法进行退火,通常采用从65℃逐步缓慢降温到55℃或50℃的方法,使退火更加充分。f.退火温度不佳,需要优化。如果有温度梯度PCR仪,则可以设置退火的温度梯度,摸索退火的最佳温度。如果没有温度梯度PCR仪,则可以通过多次PCR反应摸索最佳的退火温度。g.延伸时间不足。可按照每1kb片段延伸2分钟进行设置,对于较难扩增的片段可以设置为每1kb片段延伸3-4分钟。h.待扩增片段GC含量较高或长度较长,变性不够充分。可以调节起始变性条件至95℃ 1min甚至95℃ 2-4min。i.在不同PCR仪上进行PCR反应,避免有时PCR仪出现问题。j.循环数不足,适当延长PCR的循环数。通常循环数最高不必超过40,常用的循环数范围为25-35。k.模板含量太低,适当加大模板量,或采用巢式PCR (nested PCR)或二次PCR。巢式PCR即为在原先设计的PCR引物内侧再设计一对PCR引物,然后对第一次PCR产物进行稀释后再进行一次PCR扩增,这样一方面可以起到扩增作用,同时也可以从第一次PCR产物中扩增出特异性条带。二次PCR则为比较简单地用原有引物对第一次PCR产物进行稀释后再进行一次PCR扩增,可以起到扩增作用,但不能去除非特异性条带。l.模板中含有抑制PCR反应的物质,可以用适当的DNA纯化方法例如柱纯化等纯化模板DNA。m.当产生较多非特异性条带时,可以适当提高退火温度。n.注意设置适当的阳性对照和阴性对照通常会有很大帮助。 Aladdin's UltraBio™ PCR SuperMix (Green, 2X) is a 2X concentrated solution of Taq DNA Polymerase, dNTPs, and all of the components required for PCR, except DNA template and primers. It also contains 2X loading buffer that enables PCR products to be directly loaded on an agarose gel for electrophoresis. This product is designed for DNA amplification, qualitative or semi-quantitative PCR analysis, and can also be used for amplification and cloning of DNA fragments less than 2kb.This pre-mixed formulation saves time and avoids contamination by reducing the number of pipetting steps required for PCR, enabling the consistency and the reproducibility of PCR reactions.The UltraBio™ PCR SuperMix (Green, 2X) can be used to amplify DNA fragments up to 5kb in length, but is more suitable for amplification of DNA fragments less than 2kb.Blue and orange dyes (overall green) are added to this product and migrate at approximately 4kb and 50bp, respectively, in 1% agarose gel, which has no effect on the observation of PCR products. PCR products can be loaded directly onto an agarose gel without addition of loading buffers.This product employs a new Taq DNA Polymerase with highly stable enzyme activity. Repeated freeze-thaw up to 15 cycles does not cause any obvious change of its activity. Please refer to Figure 1 for the PCR products amplified using this product with or without 15 freeze-thaw cycles. Different primer sets are used to amplify the DNA fragments in different size ranging from 100bp to 1500bp.Figure 1. Agarose gel electrophoresis of the PCR products amplified using Aladdin's UltraBio™ PCR SuperMix (Green, 2X) without freeze-thaw (A) or with 15 cycles of freeze-thaw (B). All other conditions used for A and B are exactly the same.The PCR product amplified using this product has sticky termina with 3'-dA overhangs, which can be directly ligated to T vector for TA cloning.Each ml of this product is sufficient for 40 PCR reactions of 50μl or 100 PCR reactions of 20μl. Precautions : Because PCR reactions are extremely sensitive, contamination must be avoided during the preparation of PCR reactions. Negative control without templates is recommended for all PCR assays.The error probability of each cycle of the new Taq DNA polymerase in this product is about 2×10-5. For cloning of DNA fragments larger than 1kb, we recommend using DNA polymerases with lower error probability, such as DNA Polymerase , Plus DNA Polymerase , Q6U™ High-Fidelity DNA Polymerase , Amp™ Extra-long DNA Polymerase or Amp™ Plus Extra-long DNA Polymerase , etc. For general PCR or RT-PCR, this product is an ideal choice.Although repeated freeze-thaws up to 15 cycles do not cause any obvious change of the performance of this product, it should still be avoided. Too many cycles of freeze-thaw can decrease the activity of this product.Thaw this product completely prior to use. Mix well gently by inversion the tube and avoid the formation of air bubbles.This product is for R&D only. Not for drug, household, or other uses.For your safety and health, please wear lab coat and disposable gloves during the operation. Instructions for Use : 1. Prepare PCR reaction mixture: a. Thaw the Easy-Load™ PCR Supermix (Green, 2X) at room temperature. Mix well gently by inverting the tube and centrifuge briefly at a low speed.b. Set up the PCR reaction on ice as follows:ReagentFinal ConcentrationVolumeVolumeNuclease-Free Water-(21-x)µl(8.4-y)µlTemplate DNA10pg-1µgxµlyµlPrimer Mix (10µM)0.8µM4µl1.6µlEasy-Load™ PCR SuperMix (Green, 2X)1X25µl10µlTotal Volume-50µl20µlNote: (a) Primers at a final concentration of 0.2μM each normally work well, but primer concentration can be optimized between 0.1-1.0μM. Increase the primer concentration when amplification efficiency is low and decrease the primer concentration when non-specific PCR products are amplified. (b) The recommended amount of template varies for different types of DNA. In a reaction volume of 50μl, use 100 ng of Mammalian genomic DNA, 100 ng of E. coli genomic DNA, or 5-30 ng of Plasmid DNA. Too much template DNA can easily lead to non-specific PCR amplification products.a. Mix well gently by vortex or pipetting. Centrifuge briefly at room temperature to collect liquid at the bottom of PCR tube.b. (Optional) When using a thermal cycler without a heated lid, place a drop of mineral oil ( Plus Extra-long DNA Polymerase1000UD7215S Plus Extra-long DNA Polymerase200UD7216Pfu DNA Polymerase100UD7217Pfu DNA Polymerase1000UD7218 High-Fidelity DNA Polymerase2000UD7239MQ6U™ High-Fidelity DNA Polymerase500UD7239SQ6U™ High-Fidelity DNA Polymerase100UD7255-100mlEasy-Load™ PCR Master Mix (Green, 2X)10000TD7255-1mlEasy-Load™ PCR Master Mix (Green, 2X)100TD7255-20mlEasy-Load™ PCR Master Mix (Green, 2X)2000TD7255-4mlEasy-Load™ PCR Master Mix (Green, 2X)400TD7256-1mlEasy-Load™ PCR SuperMix (Green, 2X)100TD7256-20mlEasy-Load™ PCR SuperMix (Green, 2X)2000TD7256-4mlEasy-Load™ PCR SuperMix (Green, 2X)400TD7259-100mlEasy-Load™ PCR Master Mix (Orange, 2X)10000TD7259-1mlEasy-Load™ PCR Master Mix (Orange, 2X)100TD7259-20mlEasy-Load™ PCR Master Mix (Orange, 2X)2000TD7259-4mlEasy-Load™ PCR Master Mix (Orange, 2X)400T
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UltraBio™ PCR SuperMix 100T

UltraBio™ PCR SuperMix 100T; supplied for laboratory research, analysis, inspection, and scientific procurement use.

item number:P751565-100T
Product model:100T
level: Green, 2X
Lead Time:30days
sold 681 Items
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100T

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