Internal dynamics of F-actin and myosin S1 studied by quasi elastic neutron scattering

Matsuo, Tatsuhito; Arata, Toshiaki*; Oda, Toshiro*; Fujiwara, Satoru

no journal, , 

The dynamics of F-actin and myosin S1 were studied by quasi-elastic neutron scattering (QENS). QENS measurements were conducted on D2O solution samples of F-actin and S1 at 300 K using AMATERAS in J-PARC. It was found that while the correlation time of atomic motions of S1 was similar to that of other proteins studied so far, that of F-actin was shorter than S1. Furthermore, the fraction of immobile atoms were found to be larger for S1 than F-actin. These results suggest that F-actin is more flexible than other proteins including S1.