title: Conservation and variation of structural flexibility in protein families.
abstract: In this issue, Raimondi et al. (2010) obtained interesting insights concerning structural flexibilities in the Ras superfamily that are essential to both function retention and specialization by analyzing the deformation patterns from physical models of protein structure and from crystal structures of homologous proteins.
authors.forename: Adam W
authors.initials: AW
authors.lastname: Van Wynsberghe
authors.forename: Qiang
authors.initials: Q
authors.lastname: Cui