Abstract
Normal mode analysis, with the all-atom or coarse-grained elastic network model, represents the equilibrium fluctuation of protein molecule in the Eckart frame, where contributions from external motions (translation and rotation) of the entire protein molecule are eliminated. On the other hand, domain motion is frequently exhibited by the relative motion of one domain to the other. Such a representation of fluctuations in the non-Eckart frame cannot be achieved by conventional normal mode analysis. Here, we propose normal mode analysis in a non-Eckart frame, where the external degrees of freedom are fixed for any portion of the system. In this analysis, the covariance matrix in the Eckart frame is transformed into one in the non-Eckart frame. Using a molecular dynamics simulation, we have confirmed the validity of the transformation formula and discussed the physical implication of the formula.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
