1cjq

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[[Image:1cjq.gif|left|200px]]
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{{Seed}}
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{{STRUCTURE_1cjq| PDB=1cjq | SCENE= }}
{{STRUCTURE_1cjq| PDB=1cjq | SCENE= }}
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'''X-RAY CRYSTALLOGRAPHIC STUDIES OF THE DENATURATION OF THE DENATURATION OF RIBONUCLEASE S.'''
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===X-RAY CRYSTALLOGRAPHIC STUDIES OF THE DENATURATION OF THE DENATURATION OF RIBONUCLEASE S.===
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==Overview==
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In an attempt to view the onset of urea denaturation in ribonuclease we have collected X-ray diffraction data on ribonuclease S crystals soaked in 0, 1.5, 2, 3, and 5 molar urea. At concentrations above 2 M urea, crystals were stabilized by glutaraldehyde crosslinking. We have also collected data on ribonuclease S crystals at low pH in an attempt to study the onset of pH denaturation. The resolution of the datasets range from 1.9 to 3.0 A. Analysis of the structures reveals an increase in disorder with increasing urea concentration. In the 5 M urea structure, this increase in disorder is apparent all over the structure but is larger in loop and helical regions than in the beta strands. The low pH structure shows a very similar pattern of increased disorder. In addition there is a major change in the position of the main chain (&gt; 1 A) in the 65-72 turn region. This region has previously been shown to be involved in one of the initial steps of unfolding in the reduction of ribonuclease A. Crystallographic analyses in the presence of denaturant, when combined with controlled crosslinking, can thus provide detailed structural information that is related to the initial steps of unfolding in solution. Proteins 1999;36:282-294.
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(as it appears on PubMed at http://www.pubmed.gov), where 10409822 is the PubMed ID number.
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{{ABSTRACT_PUBMED_10409822}}
==About this Structure==
==About this Structure==
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[[Category: Denaturation]]
[[Category: Denaturation]]
[[Category: Ribonuclease]]
[[Category: Ribonuclease]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 12:48:31 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 20:50:39 2008''

Revision as of 17:50, 30 June 2008

Template:STRUCTURE 1cjq

X-RAY CRYSTALLOGRAPHIC STUDIES OF THE DENATURATION OF THE DENATURATION OF RIBONUCLEASE S.

Template:ABSTRACT PUBMED 10409822

About this Structure

1CJQ is a Protein complex structure of sequences from Bos taurus. Full crystallographic information is available from OCA.

Reference

X-ray crystallographic studies of the denaturation of ribonuclease S., Ratnaparkhi GS, Varadarajan R, Proteins. 1999 Aug 15;36(3):282-94. PMID:10409822

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