上海金畔生物科技有限公司代理New England Biolabs(NEB)酶试剂全线产品,欢迎访问官网了解更多产品信息和订购。
SpeI
我们很高兴宣布,我们即将完成把所有反应缓冲液转换为无 BSA(牛血清白蛋白)缓冲液。从 2021 年 4 月开始,NEB 将含有 BSA 的反应缓冲液转换为含有重组白蛋白(rAlbumin)的缓冲液,用于限制性内切酶和某些 DNA 修饰酶。网站上的所有信息均已根据此变化更新。如需了解更多信息,请访问 www.neb.cn/BSA-free。
- Catalog # R0133 was discontinued on December 15, 2021

- 符合省时酶(Time-Saver™)标准,可在 5-15 分钟内完成酶切
- 本酶可提供高保真(HF®)版(NEB #R3133),随附 rCutSmart™ 缓冲液
- 在 rCutSmart 缓冲液中具有 100% 活性(超过 210 种内切酶兼容于此缓冲液),便于进行双酶切
- 随附 1 管 6X 紫色凝胶上样染料
- 限制性内切酶酶切位点:A/CTAGT
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产品信息
高保真(HF)限制性内切酶在 rCutSmart 缓冲液中具有 100% 活性;统一缓冲液意味着更加直接、简化的样品处理过程。HF 内切酶还会显著降低星号活性。所有 HF 内切酶均符合省时酶(Time-Saver)标准,可在 5-15 分钟内酶切底物 DNA,也可实现过夜酶切,而且不会造成 DNA 降解。HF 限制性内切酶在改造时便将性能作为重要指标,可在更宽的条件范围下具有完全活性,最大限度地减少非特异性酶切产物,同时为实验设计提供灵活性。
产品来源
大肠杆菌菌株,其携带来自球衣菌属(Sphaerotilus)(ATCC 13923)的 SpeI 基因。
- 产品类别:
- Discontinued Products
- 特性和用法
单位定义
一个单位是指在 50 µl 的总反应体系中,37℃ 下,1 小时内酶切 1 µg pXba-XbaI DNA 所需的酶量。
反应条件
1X rCutSmart™ 缓冲液
Incubate at 37°C1X rCutSmart™ 缓冲液
50 mM Potassium Acetate
20 mM Tris-acetate
10 mM Magnesium Acetate
100 µg/ml Recombinant Albumin
(pH 7.9 @ 25°C)在不同缓冲液中的活性
NEBuffer™ r1.1: 75%
NEBuffer™ r2.1: 100%
NEBuffer™ r3.1: 25%
rCutSmart™ Buffer: 100%稀释兼容性
- 稀释液 C
贮存溶液
10 mM Tris-HCl
250 mM NaCl
1 mM DTT
0.1 mM EDTA
200 µg/ml BSA
50% Glycerol
0.15% Triton® X-100
pH 7.4 @ 25°C热失活
80°C for 20 min
甲基化敏感性
dam 甲基化: 不敏感
dcm 甲基化: 不敏感
CpG甲基化: 不敏感 - 相关产品
相关产品
- Monarch® Plasmid Miniprep Kit
- Monarch® DNA Gel Extraction Kit
- Monarch® PCR & DNA Cleanup Kit (5 μg)
单独销售的组分
- rCutSmart™ 缓冲液
- Gel Loading Dye, Purple (6X)
- 注意事项
- 切割产生 5´ CTAG 突出末端,该末端可以高效连接到 AvrII、NheI 或 XbaI 产生的 DNA 片段。
- 对 CpG、dcm 或 dam 甲基化不敏感。
操作说明、说明书 & 用法
- 操作说明
- Optimizing Restriction Endonuclease Reactions
- Restriction Digest Protocol
- Double Digest Protocol with Standard Restriction Enzymes
- 使用指南
- Activity at 37°C for Restriction Enzymes with Alternate Incubation Temperatures
- Activity of Restriction Enzymes in PCR Buffers
- Cleavage Close to the End of DNA Fragments
- Digestion of Agarose-Embedded DNA: Info for Specific Enzymes
- Double Digests
- Heat Inactivation
- NEBuffer Activity/Performance Chart with Restriction Enzymes
- Optimizing Restriction Endonuclease Reactions
- Restriction Endonucleases – Survival in a Reaction
- Restriction Enzyme Diluent Buffer Compatibility
- Restriction Enzyme Tips
- Single Letter Codes
- Site Preferences
- Star Activity
- Traditional Cloning Quick Guide
工具 & 资源
- 选择指南
- Alphabetized List of Recognition Sequences
- Cleavage of Supercoiled DNA
- Compatible Cohesive Ends and Generation of New Restriction Sites
- Dam-Dcm and CpG Methylation
- Frequencies of Restriction Sites
- Isoelectric Points (pI) for Restriction Enzymes
- Isoschizomers
- NEB Diluent and Buffer Table
- Recleavable Filled-in 5′ Overhangs
- Time-Saver™ Qualified Enzymes
- Why Choose Recombinant Enzymes?
- Web 工具
- Competitor Cross-Reference Tool
- DNA Sequences and Maps Tool
- Double Digest Finder
- Enzyme Finder
- NEBcutter™ v3.0
- NEBioCalculator®
- REBASE®
FAQs & 问题解决指南
- FAQs
- Can SpeI be used at alternative reaction temperatures?
- Is SpeI active at 25°C?
- Does SpeI produce commonly used compatible ends?
- Do I have to set-up digests with Time-Saver™ qualified enzymes for 5-15 minutes? Can I digest longer?
- I tested your restriction enzyme on the substrate DNA recommended by NEB, and it appears to be active, however it does not digest my DNA. What could be the reason?
- Why is my Restriction Enzyme not cutting DNA?
- Why do I see additional DNA bands on my gel after a restriction digest?
- Why do I see a DNA smear on an agarose gel after a restriction digest?
- How many nucleotides do I have to add adjacent to the RE recognition site in order to get efficient cutting?
- Which NEB restriction enzymes are supplied with Gel Loading Dye, Purple (6X)?
- Is this enzyme sensitive to dam, dcm or mammalian CpG methylation?
- Are there any common problems encountered when using SpeI?
- Does NEB offer any BSA-free and/or animal origin-free restriction enzymes for linearization of plasmids for mRNA vaccine development?
- Can you tell me more about the switch from BSA to Recombinant Albumin (rAlbumin) in NEBuffers?
- Can Gel Loading Dye, Purple 6X (B7024) be stored in cold temperatures?
- 问题解决指南
- Restriction Enzyme Troubleshooting Guide
引用 & 技术文献
- 引用文献
产品引用文献查找工具
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质控、安全 & 法规
- 质控分析
每一新批次的 NEB 产品都要经过质控,以满足指定的质量标准,对特定产品的质量标准和每一批次的检测数据可以通过产品说明表格、COA、产品信息卡或者产品手册进行查阅或下载。关于 NEB 产品质控的详细信息,可从此处查阅。
- 产品说明与变更通知
产品说明与变更通知
产品说明表包含产品的储存温度、有效期和规格,这些文件的命名规则如下:[货号]_[规格]_[版本]
- R0133S_L_v2
- R0133T_M_v2
- CoA
CoA 文件包含单个批次产品的储存温度、有效期和质控,这些文件的命名规则如下: [货号]_[规格]_[版本]_[Lot#]
- R0133S_L_v1_0151303
- R0133S_L_v1_0321402
- R0133S_L_v1_0321211
- R0133S_L_v1_0321304
- R0133S_L_v1_0321305
- R0133S_L_v1_0321308
- R0133S_L_v1_0321407
- R0133T_M_v1_0321211
- R0133T_M_v1_0321304
- R0133T_M_v1_0321308
- R0133T_M_v1_0321402
- R0133T_M_v1_0321407
- R0133S_L_v1_0321412
- R0133T_M_v1_0321412
- R0133S_L_v1_0321505
- R0133T_M_v1_0321505
- R0133S_L_v1_0321511
- R0133S_L_v1_0321604
- R0133T_M_v1_0321511
- R0133T_M_v1_0321604
- R0133S_L_v1_0321608
- R0133T_M_v1_0321610
- R0133S_L_v1_0321703
- R0133S_L_v1_0321710
- R0133T_M_v1_0321707
- R0133S_L_v1_0321712
- R0133T_M_v1_0321803
- R0133M_v2_10014970
- R0133L_v2_10016074
- R0133S_v2_10016076
- R0133M_v2_10027564
- R0133S_v2_10028162
- R0133L_v2_10028168
- R0133S_v2_10040027
- R0133M_v2_10040268
- R0133L_v2_10046238
- R0133S_v2_10050263
- R0133S_v2_10055119
- R0133M_v2_10060304
- R0133S_v2_10064601
- R0133L_v2_10064603
- R0133S_v2_10066808
- R0133M_v2_10072139
- R0133S_v2_10078264
- R0133S_v2_10082817
- R0133S_v2_10090032
- R0133L_v2_10087314
- R0133S_v2_10087315
- R0133S_v2_10096342
- R0133M_v2_10096340
- R0133S_v2_10104228
- R0133L_v2_10107523
- R0133M_v2_10115908
- R0133S_v2_10125121
- R0133S_v2_10115404
- SDS
以下 SDS 文件可以帮助您安全地使用该产品
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SpeI
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