کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
976428 1480187 2008 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Self-similarity of biopolymer backbones in the ribosome
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات فیزیک ریاضی
پیش نمایش صفحه اول مقاله
Self-similarity of biopolymer backbones in the ribosome
چکیده انگلیسی
Self-similar properties of the biopolymer backbones in the ribosome are investigated in terms of the fractal dimension. We especially estimate the chain fractal and capacity dimensions of the ribosomal RNAs and proteins, which are constituents of the ribosome. The fractal dimensions of both biopolymers are compared with that of the self-avoiding walk, which is a typical model of a polymer without interaction between monomers. We demonstrate that the fractality found in the ribosomal RNAs is pertinent to explain their structural characteristics: local helix formation and long-range tertiary interaction forming three-dimensional structures. The fractal dimension of the ribosomal protein supports the existence of the long and extended domain, which is hardly seen in the globular protein. The self-similarity also upholds the fact that the ribosomal proteins function primarily to stabilize the structure of the ribosome by both the long-extended domain of the protein penetrating into the inside of the RNA, and the globular domain interacting with the RNA on the exterior of it. These results partially, if not whole, unravel the structural characteristics of the biopolymers in the ribosome.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica A: Statistical Mechanics and its Applications - Volume 387, Issues 19–20, August 2008, Pages 4871-4880
نویسندگان
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