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Crystallization and preliminary X-ray crystallographic studies of the CARD domain of human CARMA1

机译:人CARMA1的CARD结构域的结晶和初步X射线晶体学研究

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摘要

The CARMA1 signalosome, which is composed of CARMA1 [caspase recruitment domain (CARD) containing MAGUK protein 1], BCL10 (B-cell lymphoma 10) and MALT1 (mucosa-associated lymphoid tissue lymphoma translocation protein 1), is a molecular-signalling complex that performs pivotal functions in T-cell receptor (TCR) and B-cell receptor (BCR) mediated NF-kappa B activation. In this study, the CARD domain of human CARMA1 (CARMA1 CARD), corresponding to amino acids 14-109, was overexpressed in Escherichia coli using an engineered C-terminal His tag. CARMA1 CARD was then purified to homogeneity and crystallized at 293 K. Finally, X-ray diffraction data were collected to a resolution of 3.2 angstrom from a crystal belonging to space group P2(1)2(1)2(1) with unit-cell parameters a = 45.73, b = 53.37, c = 91.89 angstrom.
机译:CARMA1信号小体由分子信号复合物组成,由CARMA1 [含MAGUK蛋白1的半胱氨酸蛋白酶募集结构域(CARD)],BCL10(B细胞淋巴瘤10)和MALT1(粘膜相关淋巴样组织淋巴瘤易位蛋白1)组成。在T细胞受体(TCR)和B细胞受体(BCR)介导的NF-κB激活中起关键作用。在这项研究中,人类CARMA1的CARD域(CARMA1 CARD)对应于14-109位氨基酸,在大肠杆菌中使用工程C端His标签进行过表达。然后将CARMA1 CARD纯化至均一并在293 K结晶。最后,从属于空间群P2(1)2(1)2(1)的晶体中,将X射线衍射数据收集到分辨率为3.2埃。单元参数a = 45.73,b = 53.37,c = 91.89埃。

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