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MW Determination
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Project Introduction

ESI-MS高分辨率质谱analyzeprotein时, 电喷雾得到多电荷信号, 然后对信号进行去卷积analyze, 获得protein精确分子量数值, 大于25kDa分子量ofprotein类物质分子量identify推荐高分辨率质谱identify策略. canin变性或非变性条件下进行analyze: 变性条件适合单抗分子量determine; 非变性条件适合Cys-ADC分子量determine, protein多聚体, 双Specificityantibody, antibody-antigen复合物of分子量determine.

Project Cases

单克隆antibody全protein分子量detect

antibody亚基分子量detect


Sample Requirements

关于样品:样品need量in10-50ug; 纯度>90%; 含盐量: 挥发性无机盐<20mM, 不挥发性无机盐<5mM; 样本制备过程中尽量避免表面活性剂; 样品应溶解in温andof, 不含变性剂of溶液中.

样品transport:请using足量of干冰transport, 并尽量选用较快of邮递方式, 以降低transport过程中样品降解of可能性.


FAQ

    质谱法进行分子量detectis一种efficient, accurateof技术手段, 广泛应用于生物化学, 生物医学as well as药物研发etc.领域. 以下is质谱进行分子量detectof概要:

    一, 技术原理

    质谱法utilizing不同分子in电场或磁场中of运动行for差异, through测量离子of质荷比 (m/z) 来推断分子of质量. in分子量detect中, 样品分子被电离成带电粒子, 然后经过电场或磁场of加速and偏转, most终到达detect器并record信号. throughanalyze这些信号, can得到样品of分子量信息.

    二, mainly步骤

    1. 样品制备: 确保样品of纯度andstable性, 避免杂质干扰. 对于复杂样品, 可能need进行proteinof富集and纯化.

    2. 质谱仪选择with操作: 选择合适of质谱仪, such asMALDI-TOF或ESI-MSetc., 并according toinstrument说明书严格操作.

    3. 质谱数据获取with解析: through质谱仪获取质谱数据, utilizing质谱Data Processing软件对数据进行解析. note选择合适of质谱峰, 判断信号噪音比as well as进行数据标定etc.步骤, 以确保分子量determineofAccuracy.

    三, 应用with优势

    质谱法分子量detectin生物制品protein组学领域具haveimportant作用. throughaccuratedetermineproteinof分子量, can深入了解生物体内proteinof结构and功能. 此外, 质谱法还具have通量高, 耗时短, 成本及样本需求量低etc.优势, especially适用于复杂样品ofanalyze.

    四, note事项

    1. 样品纯度要求高: 质谱法对样品of纯度要求较高, 因此in进行分子量detect前, need对样品进行充分of预processand纯化.

    2. 质谱仪of选择with操作: 不同of质谱仪inSensitivity, 分辨率and质谱范围etc.方面have所差异, 因此needaccording to具体需求选择合适of质谱仪, 并严格按照instrument说明书进行操作.

    3. 数据解析ofAccuracy: 质谱数据of解析过程need仔细process, including选择合适of质谱峰, 判断信号噪音比as well as进行数据标定etc.步骤, 以确保分子量determineofAccuracy.


 
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