Comparative analysis of protein unfoldedness in human housekeeping and non-housekeeping proteins

Bioinformatics
Neeraj PandeyDebasis Dash

Abstract

Absence of any regular structure is increasingly being observed in structural studies of proteins. These disordered regions or random coils, which have been observed under physiological conditions, are indicators of protein plasticity. The wide variety of interactions possible due to the flexibility of these 'natively disordered' regions confers functional advantage to the protein and the organism in general. This concept is underscored by the increasing proportion of intrinsically unstructured proteins seen with the ascension in the complexity of the organisms. The 'natively unfolded/disordered' state of the protein can be predicted utilizing Uversky's or Dunker's algorithm. We utilized Uversky's prediction scheme and based on the unique position of a protein in the charge-hydrophobicity plot, a derived net score was used to predict the overall disorder of the human housekeeping and non-housekeeping proteins. Substantial numbers of proteins in both the classes were predicted to be unfolded. However, comparative genomic analysis of predicted unfolded Homo sapiens proteins with homologues in Caenorhabditis elegans, Drosophila melanogaster and Mus musculus revealed significant increase in unfoldedness in non-housekeeping proteins...Continue Reading

Citations

Aug 19, 2007·Biotechnology Letters·Christelle BizimunguMicheline Vandenbol
Apr 6, 2005·Journal of Molecular Biology·Diana EkmanArne Elofsson
Nov 4, 2009·Journal of Biochemistry·Anannya BandyopadhyaySrinivasan Ramachandran
Jul 25, 2006·Proceedings of the National Academy of Sciences of the United States of America·Yi Y ShiKarol Bomsztyk
Jul 29, 2008·Trends in Biochemical Sciences·Andrew D MooreArne Elofsson
Nov 22, 2005·Proteins·Gajinder Pal SinghDebasis Dash
Dec 13, 2006·Proteins·Gajinder Pal SinghDebasis Dash
May 19, 2007·Proteins·Gajinder Pal Singh, Debasis Dash
Aug 16, 2005·Biochemical and Biophysical Research Communications·Christelle Bizimungu, Micheline Vandenbol
Oct 3, 2006·Molecular and Biochemical Parasitology·Zhi-Ping FengRaymond S Norton

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