Dear all After refinement, there is a single negative peak in my map where nothing is modeled. What does it mean? Thanks.
Dear mohamed noor, this could be noise, or due to missing low resolution reflections, due to fourier truncation errors, i.e. many things that you cannot really model. Given the seemingly medium resolution of your data you may leave it as is. If you can further improve your model at other places, this blob may go away. Regards, Tim On Thu, May 21, 2015 at 10:41:19PM +0100, mohamed noor wrote:
Dear all
After refinement, there is a single negative peak in my map where nothing is modeled. What does it mean?
Thanks.
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-- -- Dr Tim Gruene Institut fuer anorganische Chemie Tammannstr. 4 D-37077 Goettingen phone: +49 (0)551 39 22149 GPG Key ID = A46BEE1A
If this peak in a relatively large hydrophobic area then this may be an artifact due to flat bulk solvent model (although phenix.refine tries to correct for it). Pavel On 5/21/15 2:41 PM, mohamed noor wrote:
Dear all
After refinement, there is a single negative peak in my map where nothing is modeled. What does it mean?
Thanks.
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participants (3)
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mohamed noor -
Pavel Afonine -
Tim Gruene