title: Predicting protein folding rate change upon point mutation using residue-level coevolutionary information.
abstract: Change in folding kinetics of globular proteins upon point mutation is crucial to a wide spectrum of biological research, such as protein misfolding, toxicity, and aggregations. Here we seek to address whether residue-level coevolutionary information of globular proteins can be informative to folding rate changes upon point mutations. Generating residue-level coevolutionary networks of globular proteins, we analyze three parameters: relative coevolution order (rCEO), network density (ND), and characteristic path length (CPL). A point mutation is considered to be equivalent to a node deletion of this network and respective percentage changes in rCEO, ND, CPL are found linearly correlated (0.84, 0.73, and -0.61, respectively) with experimental folding rate changes. The three parameters predict the folding rate change upon a point mutation with 0.031, 0.045, and 0.059 standard errors, respectively.
authors.affiliation: Department of Biophysics, Molecular Biology and Bioinformatics, University of Calcutta, Kolkata, 700009, India.|Center of Excellence in Systems Biology and Biomedical Engineering (TEQIP Phase-II), University of Calcutta, Kolkata, 700009, India.
authors.forename: Saurav
authors.initials: S
authors.lastname: Mallik
authors.affiliation: Department of Biophysics, Molecular Biology and Bioinformatics, University of Calcutta, Kolkata, 700009, India.
authors.forename: Smita
authors.initials: S
authors.lastname: Das
authors.affiliation: Department of Biophysics, Molecular Biology and Bioinformatics, University of Calcutta, Kolkata, 700009, India.|Center of Excellence in Systems Biology and Biomedical Engineering (TEQIP Phase-II), University of Calcutta, Kolkata, 700009, India.
authors.forename: Sudip
authors.initials: S
authors.lastname: Kundu
mesh_terms: D000818:Animals; D019143:Evolution, Molecular; D006801:Humans; D007700:Kinetics; D008958:Models, Molecular; D017354:Point Mutation; D017510:Protein Folding; D017433:Protein Structure, Secondary; D011506:Proteins / Q000737:chemistry* / Q000235:genetics*
chemical_list: D011506:Proteins
keywords: characteristic path length; coevolution order; network density; point mutation; protein folding