subtom_seed_positions

Place particle positions from clicker motive list.

subtom_seed_positions(
    'input_motl_fn_prefix', input_motl_fn_prefix ('../startset/clicker'),
    'output_motl_fn', output_motl_fn ('combinedmotl/allmotl_1.em'),
    'spacing', spacing (8),
    'do_tubule', do_tubule (0),
    'rand_inplane', rand_inplane (0))

Takes in clicker motive lists from the ‘Pick Particle’ plugin for Chimera with a name in the format input_motl_fn_prefix _#.em, where # should correspond to the tomogram number the clicker corresponds to. This number will be used to fill in the 7th field in the output motive list output_motl_fn.

Points are added with roughly a pixel distance spacing apart. These points are also set with Euler angles that place them normal to the surface of the sphere or tube on which they lie. Points take the form of a tube is do_tubule evaluates to true as a boolean otherwise the clickers are assumed to correspond to spheres. In the case of both the radius is encoded in the 3rd field of the clicker motive and carried over to the output motive list. The second field corresponds to the marker set the clicker file was created from, which is not used in placing spheres but is considered in seeding tubules to delineate between multiple tubules in each tomogram. Finally a running index of tube or sphere is added to the 6th field of the output motive list. If both do_tubule and rand_inplane evaluate to true as a boolean, then the final Euler angle (phi in AV3 notation, and psi/spin/inplane in other notations) will be randomized as opposed to directed along the tubular axis.

Example

subtom_seed_positions(...
    'input_motl_fn_prefix', '../startset/clicker', ...
    'output_motl_fn', 'combinedmotl/allmotl_1.em', ...
    'spaciing', 4, ...
    'do_tubule', 0, ...
    'rand_inplane', 0)

See Also