吸光度
大小排阻色谱法
折射率
化学
表征(材料科学)
探测器
核酸
色谱法
材料科学
生物化学
光电子学
纳米技术
光学
物理
酶
出处
期刊:Methods in molecular biology
日期:2021-01-01
卷期号:: 381-395
被引量:2
标识
DOI:10.1007/978-1-0716-1197-5_18
摘要
Size-exclusion chromatography (SEC) coupled with multiangle light scattering detection (SEC/MALS) enables determination of the molecular weight, oligomeric state, and stoichiometry of protein–nucleic acid complexes in solution. Often such complexes show anomalous behavior on SEC, thus presenting a challenge in determination of molecular weight and stoichiometry based solely on the elution position from SEC. In contrast to analytical ultracentrifugation, the SEC/MALS analysis is not affected by the shape of the complex. Here we describe the use of SEC/MALS for characterization of the stoichiometry of the complex between the reverse transcriptase (RT) domain from group II intron–maturase from Eubacterium rectale and intron RNA, and for monitoring protein dimerization that is driven by interaction between single-stranded DNA upstream of the P1 promoter, known as FUSE and FUSE binding protein-interacting repressor (FIR).
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