Hi Yeping Sun,

A linear polymer is likely to apparent when you look at a large number of symmetry mates. Looking at lots of symmetry mates in cartoon view is quite intensive and can be slow unless you have a powerful graphics card - if you show the first molecule as 'ribbon' and then generated symmetry mates it can lead to a better viewing experience.

If you tell me the pdb code I can have a look.

Kind regards,

On Aug 15, 2014 8:28 AM, sunyeping <sunyeping@aliyun.com> wrote:
Dear pymol users,

I want to operate a structure whose crystal structure has one molecule in one asymmetry unit. I try to display its  polymer. I loaded the structure and used "generate" command in the pymol GUI interface:  A>generate>symmetry mates>4A, and then many copies of this molecure appeared but in a quite disoder pattern. According to the paper that published this structure, it is a polymer arranged in a linear pattern. Could you tell me how can I display this linear polymer? Thanks in advance.

Yeping Sun

Institute of Microbiology, Chinese Academy of Sciences