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首页> 外文期刊>International Journal of Biological Macromolecules: Structure, Function and Interactions >Homology modelling of the DNA 5mC methyltransferase M.BssHII. Is permutation of functional subdomains common to all subfamilies of DNA methyltransferases?
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Homology modelling of the DNA 5mC methyltransferase M.BssHII. Is permutation of functional subdomains common to all subfamilies of DNA methyltransferases?

机译:DNA 5mC甲基转移酶M.BssHII的同源性建模。 DNA甲基转移酶的所有亚家族功能性亚域的排列是否共有?

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摘要

This work presents a full tertiary model of the M.BssHII methyltransferase (MTase) complexed with substrate DNA and cofactor S-adenosyl-L-methionine, built by homology modelling based on previously solved complete structures of DNA MTases M.HaeIII and M.HhaI. M.BssHII and the template proteins show high sequence similarity, which indicates that they are evolutionary related. However, they are topologically different: M.BssHII is a circularly permuted variant of template MTases (Xu et al. Nucleic Acids Res 1997,25:3991). The model developed in this work will be a good starting point and Valuable help in designing mutagenesis experiments to better understand the biological function of methyltransferases and the process of domain swapping. (C) 2000 Elsevier Science B.V. All rights reserved. [References: 55]
机译:这项工作提出了与底物DNA和辅因子S-腺苷L-蛋氨酸复合的M.BssHII甲基转移酶(MTase)的完整三级模型,该模型是根据以前解析的DNA MTases M.HaeIII和M.HhaI完整结构通过同源性建模建立的。 M.BssHII和模板蛋白显示出很高的序列相似性,这表明它们是进化相关的。但是,它们在拓扑上是不同的:M.BssHII是模板MTase的环状排列变异体(Xu等人,Nucleic Acids Res 1997,25:3991)。在这项工作中开发的模型将是一个很好的起点,在设计诱变实验以更好地了解甲基转移酶的生物学功能和域交换过程方面将提供宝贵的帮助。 (C)2000 Elsevier Science B.V.保留所有权利。 [参考:55]

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