Dear colleagues,

I have 14-homo oligomer and such as GroEL.

I want to deposit a monomer to PDB with a correspondent rotation matrix for the biological unit.

For that, I tried to do a rotation matrix file by UCSF Chimera.

Using this command 

sym #0 group d7 center 147.4,147.4,147.4

where the #0 is a map

model is #1

But I got an error – «No molecules specified».

Could you please tell me what is wrong and how to do that?

Another question –

if the symmetry type is unknown, how can the rotation matrix be indexed?

Many thanks for considering my request.

Sincerely,

Dmitry