From: Chitrak Gupta (
Date: Wed Jan 10 2018 - 10:15:00 CST

Hi Robert,

I usually select headgroup atoms by manually specifying the atom names. It
is going to be a long list, but does the job.

Hope this helps,

On Wed, Jan 10, 2018 at 9:20 AM, Robert Nairn <> wrote:

> Hi all,
> I am trying to work out how to calculate contact of the acyl chain and the
> headgroup of a DMPC lipid within 5 Anstom of a protein residue.
> I have previously tried using 'Lipid within 5 of Protein' but I cannot get
> the separation between the headgroups and acyl chains present.
> All the best,
> Robert