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VWR® Media/Storage Bottles, 500 mL (16.9 oz.)

公司名称: VWR
产品编号: 10754-818
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Expression and Purification of the Cas10-Csm Complex from Staphylococci
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2017-06-05
[Abstract]  CRISPR-Cas (Clustered regularly interspaced short palindromic repeats-CRISPR-associated proteins) is a class of prokaryotic immune systems that degrade foreign nucleic acids in a sequence-specific manner. These systems rely upon ribonucleoprotein complexes composed of Cas nucleases and small CRISPR RNAs (crRNAs). Staphylococcus epidermidis and Staphylococcus aureus are bacterial residents on human skin that are also leading causes of antibiotic resistant infections (Lowy, 1998; National Nosocomial Infections Surveillance, 2004; Otto, 2009). Many staphylococci possess Type ... [摘要]  CRISPR-Cas(聚集的定期间隔的短回文重复-CRISPR相关蛋白)是一类以序列特异性方式降解外来核酸的原核免疫系统。这些系统依赖于由Cas核酸酶和小型CRISPR RNA(crRNA)组成的核糖核蛋白复合物。表皮葡萄球菌和金黄色葡萄球菌是人皮肤上的细菌居民,也是抗生素抗性感染的主要原因(Lowy,1998; National Nosocomial Infection Surveillance,2004; Otto,2009) 。许多葡萄球菌具有III型A CRISPR-Cas系统(Marraffini和Sontheimer,2008; Cao等人,2016),已被证明可预防质粒转移并防止病毒性捕食者(Goldberg这些生物体中,等等,2014; Hatoum-Aslan等人,2014; Samai等人,2015)。因此,在天然葡萄球菌背景中获得对这些系统的机械理解可以导致对影响这些病原体的进化和存活的因素的重要见解。 III-A型CRISPR-Cas系统编码称为Cas10-Csm的五亚单位效应复合物(Hatoum-Aslan等人,2013)。在这里,我们描述了一种用于表达和纯化Cas10-Csm的方法。表皮样背景或异源性S。金黄色葡萄球菌背景。该方法由两步纯化方案组成,包括Ni 2 + - ...

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