Date published: 2026-7-10
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The Double Nickase Plasmid features a U6 promoter for sgRNA expression, a 20 nt targeting sequence, and a gRNA scaffold to guide Cas9n. It includes a CBh promoter for Cas9n (D10A) and puromycin resistance, GFP for transfection verification, and nuclear localization signals (NLS). The 2A peptide allows co-expression of Cas9n and Puro from a single promoter, enabling precise genome editing with reduced off-target effects.
The Double Nickase Plasmid features a U6 promoter for sgRNA expression, a 20 nt targeting sequence, and a gRNA scaffold to guide Cas9n. It includes a CBh promoter for Cas9n (D10A) and puromycin resistance, GFP for transfection verification, and nuclear localization signals (NLS). The 2A peptide allows co-expression of Cas9n and Puro from a single promoter, enabling precise genome editing with reduced off-target effects.
The Double Nickase Plasmid features a U6 promoter for sgRNA expression, a 20 nt targeting sequence, and a gRNA scaffold to guide Cas9n. It includes a CBh promoter for Cas9n (D10A) and puromycin resistance, GFP for transfection verification, and nuclear localization signals (NLS). The 2A peptide allows co-expression of Cas9n and Puro from a single promoter, enabling precise genome editing with reduced off-target effects.
The Double Nickase Plasmid features a U6 promoter for sgRNA expression, a 20 nt targeting sequence, and a gRNA scaffold to guide Cas9n. It includes a CBh promoter for Cas9n (D10A) and puromycin resistance, GFP for transfection verification, and nuclear localization signals (NLS). The 2A peptide allows co-expression of Cas9n and Puro from a single promoter, enabling precise genome editing with reduced off-target effects.
Cas9n Nickase gRNA Plasmid Targeting: Dual gRNA plasmids create single-strand nicks at precise DNA sequences for efficient genome editing using Cas9n Nickase.
Cas9n Nickase gRNA Plasmid Targeting: Dual gRNA plasmids create single-strand nicks at precise DNA sequences for efficient genome editing using Cas9n Nickase.
This image illustrates the Cas9n Nickase mechanism used for precise genome editing. Two plasmids (Plasmid 1 and Plasmid 2) are shown, each containing a targeted DNA sequence. The system utilizes single-guide RNAs (sgRNA) to direct Cas9n Nickase to specific genomic locations, represented by the blue and pink DNA strands. The sgRNA scaffold aids in guiding Cas9n to the 20 nucleotide (nt) target sequence on the DNA. Cas9n makes single-strand cuts at NCC and NGG sites, enabling precise gene modifications without creating double-strand breaks.
This image illustrates the Cas9n Nickase mechanism used for precise genome editing. Two plasmids (Plasmid 1 and Plasmid 2) are shown, each containing a targeted DNA sequence. The system utilizes single-guide RNAs (sgRNA) to direct Cas9n Nickase to specific genomic locations, represented by the blue and pink DNA strands. The sgRNA scaffold aids in guiding Cas9n to the 20 nucleotide (nt) target sequence on the DNA. Cas9n makes single-strand cuts at NCC and NGG sites, enabling precise gene modifications without creating double-strand breaks.
The Double Nickase Plasmid features a U6 promoter for sgRNA expression, a 20 nt targeting sequence, and a gRNA scaffold to guide Cas9n. It includes a CBh promoter for Cas9n (D10A) and puromycin resistance, GFP for transfection verification, and nuclear localization signals (NLS). The 2A peptide allows co-expression of Cas9n and Puro from a single promoter, enabling precise genome editing with reduced off-target effects.

TFIIH p89双切口酶质粒(h): sc-401124-NIC

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说明书
  • 针对种属：human
  • 20 µg 纯化的即用型的质粒DNA，最多可供20次转染
  • TFIIH p89 双切口酶质粒（h）含有一对质粒，分别编码D10A突变的Cas9核酸酶，和目标特异的 20 nt 向导RNA （gRNA），与其相应的/%base_sku_name%/ CRISPR/Cas9敲除质粒相比，它在基因敲除方面具有更好的特异性
  • 成对的向导RNA序列与目标基因中约20个碱基对互补，从而使Cas9可以模仿DNA双链断裂（DSB），介导特异的基因组DNA双切割
  • 质粒对中的一个包含供筛选使用的嘌呤霉素抗性基因；另一个包含供观察转染使用的绿色荧光蛋白标记
  • TFIIH p89双切酶质粒（h）和TFIIH p89双切酶质粒（h2）编码针对ERCC3的不同配对gRNA设计。其中一种或两种设计可能均有提供
  • 转染后，基因敲除效率可以用抗体：TFIIH p89: sc-271500，通过WB, IF或者IHC分析
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    订购信息

    产品名称产品编号规格价格数量收藏夹

    TFIIH p89双切口酶质粒(h)

    sc-401124-NIC
    20 µg
    		$410.00

    TFIIH p89双切口酶质粒(h2)

    sc-401124-NIC-2
    20 µg
    		$410.00

    ERCC3 编码 TFIIH 复合体的 p89（XPB）亚基，这是一种依赖 DNA 的 ATP 酶及 3′→5′ 解旋酶，是 TFIIH 复合体的核心组分，负责将 RNA 聚合酶 II 的基础转录起始与核苷酸切除修复（NER）耦联起来。TFIIH p89 通过在转录耦联 NER 与全基因组 NER 过程中解开启动子 DNA 以及含损伤位点的 DNA，帮助协调基因组完整性、细胞周期进程以及对紫外线诱导损伤的应答。ERCC3 功能受损会扰乱转录稳态和 DNA 修复能力，使 ERCC3 缺陷与着色性干皮病和脆发性毛发营养不良等遗传性 DNA 修复综合征相关。作为 TFIIH 的组成部分，TFIIH p89 常被用于研究转录调控、复制压力及诱变通路的机制。

    TFIIH p89 双切酶质粒（h）由一对匹配的质粒组成，专为在 human 细胞系中对 ERCC3 位点进行高特异性编辑而设计。每个质粒分别表达Cas9 D10A切口酶和针对ERCC3内不同DNA链的独特sgRNA。当这两种切口酶被引导至相邻但位于DNA链相反侧的位点时，会产生错位的单链切口，从而共同形成错位双链断裂，这需要两个引导RNA在靶位点上协同发挥作用。由此产生的DNA断裂通过内源性细胞修复途径（最常见的是非同源末端连接（NHEJ））得到修复，从而导致插入或缺失，进而破坏ERCC3的功能。通过要求双sgRNA在靶位点结合，双切口方法提高了编辑特异性，并为需要对靶向精度进行额外控制的应用提供了互补的CRISPR策略。

    为高效识别编辑后的细胞，其中一个质粒编码GFP以实现转染细胞群的荧光可视化，而配套质粒则携带嘌呤霉素抗性基因用于抗生素筛选。这些特性共同支持共转染细胞群的高效富集，并简化了ERCC3基因失活克隆的验证流程。

    仅供研究使用。不用于诊断或治疗。

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