ترجمه مقاله نقش ضروری ارتباطات 6G با چشم انداز صنعت 4.0
- مبلغ: ۸۶,۰۰۰ تومان
ترجمه مقاله پایداری توسعه شهری، تعدیل ساختار صنعتی و کارایی کاربری زمین
- مبلغ: ۹۱,۰۰۰ تومان
Fractal geometry analysis provides a useful and desirable tool to characterize the configuration and structure of proteins. In this paper we examined the fractal properties of 750 folded proteins from four different structural classes, namely (1) the a-class (dominated by a-helices), (2) the b-class (dominated by b-pleated sheets), (3) the (a/b)-class (a-helices and b-sheets alternately mixed) and (4) the (a + b)-class (a-helices and b-sheets largely segregated) by using two fractal dimension methods, i.e. ‘‘the local fractal dimension’’ and ‘‘the backbone fractal dimension’’ (a new and useful quantitative parameter). The results showed that the protein molecules exhibit a fractal behavior in the range of 1 6 N 6 15 (N is the number of the interval between two adjacent amino acid residues), and the value of backbone fractal dimension is distinctly greater than that of local fractal dimension for the same protein.