Re: [ccp4bb] How to determine ligand binding from diffraction pattern?

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CCP4bb <-- 1999 <-- November 1999 <-- 30 November 1999

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Subject: Re: How to determine ligand binding from diffraction pattern?
From: Ian Tickle I {- dot -} Tickle {- at -} ASTEX-THERAPEUTICS {- dot -} COM
Date: 2007-05-29

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Subject: Re: How to determine ligand binding from diffraction pattern?
From: "Soisson, Stephen Michael" stephen_soisson {- at -} MERCK {- dot -} COM
Date: 2007-05-29

Having done this a few hundred times, I would strongly suggest that you
just collect the data and solve the structure. Since you already have
the apo structure solved, then it really isn't that much work to do an
MR solution on the complex. Be aware that quite frequently there is
enough non-isomorphism to necessitate partial refinement of the
"complex" structure before recognizable density will appear for the
ligand. The definitive answer can only be obtained with a full data
set, so go for it.

Good luck-

Steve

________________________________

From: CCP4 bulletin board [mailto:CCP4BB@JISCMAIL.AC.UK] On Behalf Of
Joe Chen
Sent: Monday, May 28, 2007 4:35 PM
To: CCP4BB@JISCMAIL.AC.UK
Subject: [ccp4bb] How to determine ligand binding from diffraction
pattern?

Dear all,

Is there a simple way to determine whether ligand is bound or not by
comparing the diffraction patterns between ligand-free (structure known)
and ligand-soaked protein crystals? I would like to solve the ligand
bound protein structure, but before I do so, I have to find out if the
ligand is actually bound. Thank you very much!

Best,

Joe

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CCP4bb <-- 1999 <-- November 1999 <-- 30 November 1999

Previous message:
Subject: Re: How to determine ligand binding from diffraction pattern?
From: Ian Tickle I {- dot -} Tickle {- at -} ASTEX-THERAPEUTICS {- dot -} COM
Date: 2007-05-29

Next message:
Subject: Re: crystal shipping at room temperature
From: Kris Tesh kris {- dot -} tesh {- at -} RIGAKU {- dot -} COM
Date: 2007-05-29