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[EMAIL PROTECTED] wrote on 05/02/2006 01:41:39 PM:

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> Axel Brunger had an X-PLOR script to do exactly this sort of thing with
> the Fab fragment of the antibody 26-10 that was one of his molecular
> replacement test cases.  Rummaging around I see it's called "elbow.inp"
> so if you have a working X-PLOR installation you might find it in:
>
> xplor_3.851/tutorial/xtalmr/elbow.inp
>

Just a couple of points about this script:

- it's also in the X-PLOR manual (page 247) in case you have a copy of that
lying around but don't have an X-PLOR installation.

- it works perfectly well in CNS, with a couple of minor modifications.  I
unfortunately can't remember what I modified (and I don't have the file
with me anymore) but it was a very short (15 mins) cycle of trying the
script, reading the CNS error messages, adjusting things the errors pointed
to, and getting it to work.  Email me if you need more details and I'll try
to remember what I did...

- the rotation about the user-specified hinge is relative, not absolute -
specifying a rotation angle of 10 degrees adds 10 deg to the elbow angle
whatever the angle currently is.  You don't even need to know the angle.

- if you use this script for its original purpose of adjusting a Fab's
elbow angle, watch out for the residue numbering.  The script assumes your
Fab is numbered sequentially; if you're using Kabat numbering instead, the
wrong residues will be chosen for the hinge.


- Matt


--
Matthew Franklin                     phone:(917)606-4116
Senior Scientist, ImClone Systems      fax:(212)645-2054
180 Varick Street, 6th floor
New York, NY 10014


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