title: A simple parameter relating sequences with folding rates of small alpha helical proteins.
abstract: It is found that the helix parameter (HP), which favors clustering of non-polar residues, is linearly correlated with the logarithms of rate constants of folding of small two-state alpha-helical proteins. The definition is HP = N(H)(-1) sigma [f(i)+ (f(i-1)+f(i+1))/2], where f(i)=1 or -1, if the i'th residue is hydrophobic or hydrophilic, respectively, N(H) is the number of hydrophobic residues and the summation is taken over the hydrophobic residues.
authors.affiliation: Centre of Molecular Biology, Institute of Biophysics, Chinese Academy of Sciences, 15 Datun Road, Chaoyang District, Beijing 100101, China.
authors.forename: Hui
authors.initials: H
authors.lastname: Shao
authors.forename: Yi
authors.initials: Y
authors.lastname: Peng
authors.forename: Zong-Hao
authors.initials: ZH
authors.lastname: Zeng
mesh_terms: D000465:Algorithms; D000596:Amino Acids / Q000737:chemistry; D000818:Animals; D006801:Humans; D008956:Models, Chemical; D011487:Protein Conformation; D017510:Protein Folding; D011506:Proteins / Q000737:chemistry*
chemical_list: D000596:Amino Acids; D011506:Proteins