感受态细胞采样器
感受态细胞采样器
Invitrogen™

感受态细胞采样器

感受态细胞采样器试剂盒包含一对四种不同的化学感受态大肠杆菌细胞株(便利 One Shot 规格)。每瓶单次使用的细胞都可以直接使用,无需额外的移液步骤或冻融循环,这些操作都会降低转化效率。使用此试剂盒评价哪些菌株最适合您实验室所使用的不同类型的 DNA。One了解更多信息
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货号数量
A104698 x 50μL
货号 A10469
价格(CNY)
1,726.00
Each
添加至购物车
数量:
8 x 50μL
价格(CNY)
1,726.00
Each
添加至购物车
感受态细胞采样器试剂盒包含一对四种不同的化学感受态大肠杆菌细胞株(便利 One Shot 规格)。每瓶单次使用的细胞都可以直接使用,无需额外的移液步骤或冻融循环,这些操作都会降低转化效率。使用此试剂盒评价哪些菌株最适合您实验室所使用的不同类型的 DNA。

One Shot Mach1 T1-噬菌体耐受化学感受态大肠杆菌细胞的倍增时间比典型大肠杆菌细胞倍增时间短。因此,在氨苄青霉素选择药敏板上铺板转化的八小时内,Mach1 集落清晰可见。可以在生长 4 小时后对过夜集落进行小提。

Mach1 感受态大肠杆菌细胞以 One Shot 规格(货号 C862003)以及我们的 MultiShot StripWell 和 FlexPlate 规格提供,适用于中等通量和高通量应用(C869601C8681201)。

One Shot OmniMAX2 T1-噬菌体耐受化学感受态大肠杆菌细胞是适于所有克隆应用(包括 Gateway 技术)的理想选择。它们以化学性感受态 One Shot 规格提供较高转化效率,转化体 5 x 109 次,对照 DNA 1 µg。将高转化效率与消除 mcrA、mrr、mcrBC 和 hsdRMS 限制性系统结合,以方便的化学感受态规格构建更具代表性的基因组文库。

OmniMAX 2 细胞以 One Shot 规格 (C854003) 和 MultiShot FlexPlate 规格 (C8581201) 提供,适用于中等通量至高通量应用。

OneShot Stbl3 化学感受态细胞降低了不需要的同源重组的频率,是用于克隆不稳定 DNA(如含长末端重复序列的慢病毒 DNA (LTR))的理想选择。Stbl3 细胞的 DNA 得率通常是标准克隆株 >10 倍以上。

Stbl3 化学感受态细胞有 One Shot 规格 (C737303) 以及 MultiShot StripWell 和 FlexPlate 规格(C739601C7381201)可供选择,用于中等通量和高通量应用。

One Shot TOP10 细胞是适于多种克隆技术的理想选择。它们通常包含在我们的许多克隆和表达试剂盒中,如 TOPO 和 Gateway 克隆试剂盒,可对我们的 GeneArt High-Q Strings 和 Strings DNA 片段与文库进行补充。One Shot TOP10 感受态大肠杆菌的转化效率为 1 x 109 cfu/µg 超螺旋 DNA,适用于高效克隆和质粒增殖。它们可以实现高拷贝数质粒的稳定复制。

TOP10 化学感受态细胞有 One Shot 规格 (C404003) 以及 MultiShot StripWell 和 FlexPlate 规格(C409601 和 C4081201)可供选择,可用于中等通量和高通量应用。
仅供科研使用。不可用于诊断程序。
规格
细菌或酵母菌株Mach1、OmniMAX2、TOP10、Stbl3
最大浓度1 x 10^9 个细胞/mL
效率> 1x10^9
产品线One Shot™
产品类型感受态细胞采样器试剂盒
数量8 x 50μL
运输条件干冰
产品规格One Shot
种属大肠杆菌
Unit SizeEach
内容与储存
感受态细胞采样器包含四种化学感受态细胞株的各两次转化(One Shot™ 形式)。在 -80°C 下储存。

常见问题解答 (FAQ)

How do you recommend that I prepare my DNA for successful electroporation of E. coli?

For best results, DNA used in electroporation must have a very low ionic strength and a high resistance. A high-salt DNA sample may be purified by either ethanol precipitation or dialysis.

The following suggested protocols are for ligation reactions of 20ul. The volumes may be adjusted to suit the amount being prepared.

Purifying DNA by Precipitation: Add 5 to 10 ug of tRNA to a 20ul ligation reaction. Adjust the solution to 2.5 M in ammonium acetate using a 7.5 M ammonium acetate stock solution. Mix well. Add two volumes of 100 % ethanol. Centrifuge at 12,000 x g for 15 min at 4C. Remove the supernatant with a micropipet. Wash the pellet with 60ul of 70% ethanol. Centrifuge at 12,000 x g for 15 min at room temperature. Remove the supernatant with a micropipet. Air dry the pellet. Resuspend the DNA in 0.5X TE buffer [5 mM Tris-HCl, 0.5 mM EDTA (pH 7.5)] to a concentration of 10 ng/ul of DNA. Use 1 ul per transformation of 20 ul of cell suspension.

Purifying DNA by Microdialysis: Float a Millipore filter, type VS 0.025 um, on a pool of 0.5X TE buffer (or 10% glycerol) in a small plastic container. Place 20ul of the DNA solution as a drop on top of the filter. Incubate at room temperature for several hours. Withdraw the DNA drop from the filter and place it in a polypropylene microcentrifuge tube. Use 1ul of this DNA for each electrotransformation reaction.

When should DMSO, formamide, glycerol and other cosolvents be used in PCR?

Cosolvents may be used when there is a failure of amplification, either because the template contains stable hairpin-loops or the region of amplification is GC-rich. Keep in mind that all of these cosolvents have the effect of lowering enzyme activity, which will decrease amplification yield. For more information see P Landre et al (1995). The use of co-solvents to enhance amplification by the polymerase chain reaction. In: PCR Strategies, edited by MA Innis, DH Gelfand, JJ Sninsky. Academic Press, San Diego, CA, pp. 3-16.

Additionally, when amplifying very long PCR fragments (greater than 5 kb) the use of cosolvents is often recommended to help compensate for the increased melting temperature of these fragments.

Find additional tips, troubleshooting help, and resources within our PCR and cDNA Synthesis Support Center.