SbfI |NEB酶试剂 New England Biolabs

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。

产品信息

本酶提供高保真版 SbfI-HF®(NEB #R3642)

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不会造成 DNA 降解。HF 限制性内切酶在改造时将性能作为重要指标,可在更宽的条件下具有完全活性,最大限度地减少非特异性酶切产物,并且为实验设计提供灵活性。

产品来源

大肠杆菌菌株,携带有克隆自链霉菌属(Streptomyces)Bf-61(S.K. Degtyarev)的 SbfI 基因。

产品类别:
Discontinued (<3 years)

  • 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℃ 条件下,1 小时内酶切 1 µg λ DNA 所需的酶量。

    反应条件

    1X rCutSmart™ 缓冲液
    Incubate at 37°C

    1X 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: 50%
    NEBuffer™ r2.1: 25%
    NEBuffer™ r3.1: <10%
    rCutSmart™ Buffer: 100%

    稀释兼容性

    • 稀释液 A

    贮存溶液

    10 mM Tris-HCl
    50 mM NaCl
    1 mM DTT
    0.1 mM EDTA
    200 µg/ml BSA
    50% Glycerol
    pH 7.4 @ 25°C

    热失活

    80°C for 20 minutes

    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

    同裂酶

    SbfI-HF
    SdaI
    Sse8387I

  • 相关产品

    相关产品

    • SbfI-HF®
    • t1010-monarch-plasmid-miniprep-kit
    • Monarch® DNA 胶回收试剂盒
    • Monarch® PCR & DNA 纯化试剂盒(5 μg)

    单独销售的组分

    • rCutSmart™ 缓冲液

  • 注意事项

    1. SbfI 是 Sse8387I 的完全同裂酶。
    2. 对 CpG、dcm 或 dam 甲基化均不敏感。
    3. 甘油浓度 >5% 条件下可能出现星号活性

操作说明、说明书 & 用法

  • 操作说明

    1. Optimizing Restriction Endonuclease Reactions
    2. Restriction Digest Protocol
    3. 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
    • Restriction Endonucleases – Survival in a Reaction
    • Restriction Enzyme Diluent Buffer Compatibility
    • Restriction Enzyme Tips
    • Single Letter Codes
    • Star Activity

工具 & 资源

  • 选择指南

    • Alphabetized List of Recognition Sequences
    • 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
    • Time-Saver™ Qualified Enzymes

  • Web 工具

    • DNA Sequences and Maps Tool
    • Double Digest Finder
    • Enzyme Finder
    • NEBcutter™ v3.0
    • NEBioCalculator®
    • REBASE®

FAQs & 问题解决指南

  • FAQs

    1. Is SbfI a Time-Saver™ Qualified enzyme?
    2. Is SbfI activity sensitive to dam, dcm or mammalian CpG methylation?
    3. How many base pairs should be added at the end of a PCR primer next to the SbfI recognition site to guarantee that SbfI will cut properly?
    4. Does SbfI have any neoschizomers?
    5. Is there a High Fidelity version of SbfI?
    6. Does SbfI exhibit star activity?
    7. Do I have to set-up digests with Time-Saver™ qualified enzymes for 5-15 minutes? Can I digest longer?
    8. 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?
    9. Can you tell me more about the switch from BSA to Recombinant Albumin (rAlbumin) in NEBuffers?