how to fix an interface in EOM ?

[gia75]

Hi All

I have a 4 domains, monomeric protein (1 chain, symmetry P1).
The domain 1 and 4 interact together.
how to define such interface in EOM ? (I don't want them to move apart).

Thank you,

GIA

[SaxsMax]

One can simply fix domains 1 and 4 in EOM, so that the desired interface is maintained