Jie Liu wrote:
Dear CCP4ers:
Does anyone know an existing program to calculate the lateral
displacement---the vertical offset, measured as a fraction of the
the heptad repeat---of neighboring helices in coiled coils or helix
bundles, either parallel or antiparallel?
Your input is greatly
Since Jie Liu is talking about coiled coils and heptad
repeat, I think what may be needed is the displacement
along the bundle axis. So an expression for the best
bundle axis line, and then the projection of different
C-a's onto that line to measure the difference between
them?
Ed
Eleanor Dodson
Dear Ed, Eleanor, Pratap and CCP4ers
Thank you all for the replies.
In Jane S. Richardson's Alacoil paper (Protein Science,
1995, 4:2252-2260), they defined the vertical offset
as follows: choosing the Ca of the a heptad position
on one helix as the reference zero level and position
a+7 as level
Dear CCP4ers:
Does anyone know an existing program to calculate the lateral
displacement---the vertical offset, measured as a fraction of the
the heptad repeat---of neighboring helices in coiled coils or helix
bundles, either parallel or antiparallel?
Your input is greatly appreciated.
Have a
