文章基本信息

标题：Matching protein structures with fuzzy alignments
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作者：Richard Blankenbecler ; Mattias Ohlsson ; Carsten Peterson 等
期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：2003
卷号：100
期号：21
页码：11936-11940
DOI：10.1073/pnas.1635048100
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：Unraveling functional and ancestral relationships between proteins as well as structure-prediction procedures require powerful protein-alignment methods. A structure-alignment method is presented where the problem is mapped onto a cost function containing both fuzzy (Potts) assignment variables and atomic coordinates. The cost function is minimized by using an iterative scheme, where at each step mean field theory methods at finite "temperatures" are used for determining fuzzy assignment variables followed by exact translation and rotation of atomic coordinates weighted by their corresponding fuzzy assignment variables. The approach performs very well when compared with other methods, requires modest central processing unit consumption, and is robust with respect to choice of iteration parameters for a wide range of proteins.
关键词：algorithm ; dynamical programming ; fuzzy assignment ; mean field annealing