[ccp4bb] Negative density around C of COO-

Protein crystallography Programs for crystallography X-ray detectors
Basic tutorials:
Protein Peptide

CCP4bb navigation

CCP4bb <-- 2008 <-- May 2008 <-- 05 May 2008

Previous message:
Subject: Announcement... New CCP4 documentation wiki
From: Kevin Cowtan cowtan {- at -} YSBL {- dot -} YORK {- dot -} AC {- dot -} UK
Date: 2008-05-05

Next message:
Subject: Re: Negative density around C of COO-
From: Kevin P Madauss kevin {- dot -} p {- dot -} madauss {- at -} GSK {- dot -} COM
Date: 2008-05-05

Subject: Negative density around C of COO-
From: Narayanan Ramasubbu ramasun1 {- at -} UMDNJ {- dot -} EDU
Date: 2008-05-05

Dear all:
I am noticing that in some of my structures, at 1.5 A resolution, 1)
there is some negative density around the C of the carboxyl groups.
2) I also notice the negative density around S in a disulfide region. It
is as though the disulfide is broken.

Could some body enlighten me on this feature?

CCP4bb navigation

CCP4bb <-- 2008 <-- May 2008 <-- 05 May 2008

Previous message:
Subject: Announcement... New CCP4 documentation wiki
From: Kevin Cowtan cowtan {- at -} YSBL {- dot -} YORK {- dot -} AC {- dot -} UK
Date: 2008-05-05

Next message:
Subject: Re: Negative density around C of COO-
From: Kevin P Madauss kevin {- dot -} p {- dot -} madauss {- at -} GSK {- dot -} COM
Date: 2008-05-05