Journal
PROTEINS-STRUCTURE FUNCTION AND BIOINFORMATICS
Volume 67, Issue 4, Pages 785-788Publisher
WILEY
DOI: 10.1002/prot.21434
Keywords
bioinformatics; reduced alphabets; homology search; fold recognition; amino acids
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Funding
- NLM NIH HHS [2R01 LM-06789] Funding Source: Medline
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We examine the informatic characteristics of amino acid representations based on physical properties. We demonstrate that sequences rewritten using contracted alphabets based on physical properties do not encode local folding information well. The best four-character alphabet can only encode similar to 57% of the maximum possible amount of structural information. This result suggests that property-based representations that operate on a local length scale are not likely to be useful in homology searches and fold-recognition exercises. Proteins 2007;67:785-788. (C) 2007 Wiley-Liss, Inc.
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