[Chimera-users] Help on using Modeller interface

Hi I'm currently trying to use the Modeller interface but I'm having difficulties. I am trying to model a monomeric protein but one of the templates is a homotetramer containing chains A, B, C and D. I only need to use chain A to model the protein but I'm not sure how to do it. Whenever I use the Modeller interface, it uses all of the chains which is not what I want. Unfortunately, this is the only template that I can use since the others are either structures that have since been refuted or don't really correspond to the protein I'm studying. I would be very grateful for your help. Thanks Tiglath