A structural bioinformatics approach to the analysis of nsSNPs and prediction of disease association. Catherine L. Worth, G. Richard J. Bickerton, Adrian Schreyer, Julia R. Forman, Tammy M.K. Cheng, Semin Lee, Sungsam Gong, David F. Burke and Tom L. Blundell Understanding the impact that non-synonymous single nucleotide polymorphisms (nsSNPs) have on the structures of gene products, proteins, is important in identifying the origins of complex diseases. Predicting the effects that these mutations have on protein function depends critically on exploiting all information available on the three-dimensional structures of proteins. We have developed software and databases for the analysis of nsSNPs that allows a user to move from SNP to sequence to structure to function. In both structure prediction and in the analysis of the effects of nsSNPs, we exploit information about protein evolution, in particular, that derived from investigation of the relation of sequence to structure gained from the study of amino acid substitutions in divergent evolution. The techniques developed in our laboratory have allowed fast and automated sequence-structure homology recognition to identify templates and to perform comparative modelling, as well as simple, robust and generally applicable algorithms to assess the likely impact of amino acid substitutions on structure and interactions. We describe our strategy for relating SNPs to disease1 and the results of benchmarking our approach on a set of human proteins of known structure and recognized mutation2. 1. Burke DF, Worth CL, Priego EM, Cheng TMK, Smink LJ, Todd JA and Blundell TL (2007) Genome bioinformatic analysis of nonsynonymous SNPs. BMC Bioinformatics 8:301. 2. Worth CL*, Bickerton GRJ*, Schreyer A, Forman JR, Cheng TMK, Lee S, Gong S, Burke DF and Blundell TL (2007) A structural bioinformatics approach to the analysis of non-synonymous single nucleotide polymorphisms and their relation to disease. Journal of Bioinformatics and Computational Biology special issue: Making Sense of Mutations requires Knowledge Management vol.5 no 6. *these authors contributed equally to this work