pCS-hlyE-Hy BioVector®冷休克低温诱导高效表达融合蛋白的大肠杆菌重组表达质粒载体
- 价 格:¥99860
- 货 号:BioVector®pCS-hlyE-Hy
- 产 地:北京
- BioVector NTCC典型培养物保藏中心
- 联系人:Dr.Xu, Biovector NTCC Inc.
电话:400-800-2947 工作微信:1843439339 (QQ同号)
邮件:Biovector@163.com
手机:18901268599
地址:北京
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载体骨架: 基于 pCold 载体系统构建。
启动子: 使用 cspA 启动子(来自大肠杆菌),该启动子在低温环境下会被激活。
诱导方式: 温度依赖型“冷休克”诱导(通常从 37°C 切换至 15°C)。
宿主系统: 适用于 BL21 等大肠杆菌菌株。

关键组件与功能
融合载体 (HlyE/ClyA): 质粒包含 hlyE(也称为 clyA)基因,这是一种大肠杆菌溶血素基因。它常被用作载体,将融合蛋白锚定在外膜囊泡 (OMVs) 上,用于蛋白质分泌或疫苗递送。
调控元件: 包含 lac 操纵子 (LacO) 和 cspA 的 5' UTR,旨在增强 mRNA 的稳定性和低温下的翻译效率。
应用实例: 在 2025/2026 年的研究中,该质粒被用于克隆 ClyA-HAase 等融合蛋白,通过工程化细菌外膜囊泡来增强 siRNA 递送效率并抑制肿瘤。
主要用途: 表达在 37°C 下易失活或难溶的蛋白质。
抗性标记: 标准的 pCold 系列载体通常使用 氨苄青霉素 (Ampicillin) 抗性(具体请参考供应商提供的文档)。
翻译增强元件 (TEE): 包含来自 cspA N-末端的一段短序列,用于提升蛋白产量。
BioVector®pCS-hlyE-Hy is a specialized bacterial recombinant protein expression plasmid designed for the high-efficiency production of fusion proteins under cold-shock conditions.
Vector Backbone: Derived from the pCold vector system.
Promoter: Utilizes the cspA promoter (from E. coli), which is activated at low temperatures.
Induction Method: Temperature-dependent "cold-shock" induction (typically shifting from 37°C to 15°C).
Host System: Optimized for E. coli strains such as BL21.
Fusion Partner (HlyE/ClyA): The plasmid typically includes hlyE (also known as clyA), an E. coli hemolysin gene often used as a carrier to anchor fusion proteins to outer membrane vesicles (OMVs) for secretion or vaccine delivery.
Regulatory Elements: Includes a lac operator (LacO) and the 5' UTR of cspA to enhance mRNA stability and translation efficiency at low temperatures.
Application Example: In recent research (2025/2026), it has been used to clone fusion proteins like ClyA-HAase to engineer bacterial OMVs for enhanced siRNA delivery and tumor inhibition.
Primary Use: Expression of proteins that are otherwise insoluble or unstable at 37°C.
Selection Marker: Standard pCold-based vectors usually employ ampicillin resistance (verify with specific supplier documentation if available).
Translation Enhancing Element (TEE): Includes a short sequence from the N-terminus of cspA to boost protein yield.
Supplier生产商:
BioVector NTCC质粒载体菌株细胞蛋白抗体基因保藏中心
E-mail:BioVector@163.com
电话:400-800-2947
工作QQ/微信同号:1843439339
网址 www.biovector.net
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