You can rainbow color proteins from N (blue) to C (red) terminus to see where the ends are using menu Tools / Depiction / Rainbow, or the command rainbow.

        Tom


> On Feb 14, 2020, at 1:32 AM, Nail Besli  wrote:
>
> how can I detect the N-terminal or C-teminal after docking of two proteins in Chimera
> Thanks
>