1cjq: Difference between revisions
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[[Image:1cjq.gif|left|200px]] | [[Image:1cjq.gif|left|200px]] | ||
'''X-RAY CRYSTALLOGRAPHIC STUDIES OF THE DENATURATION OF THE DENATURATION OF RIBONUCLEASE S.''' | {{Structure | ||
|PDB= 1cjq |SIZE=350|CAPTION= <scene name='initialview01'>1cjq</scene>, resolution 3.00Å | |||
|SITE= | |||
|LIGAND= <scene name='pdbligand=SO4:SULFATE ION'>SO4</scene> | |||
|ACTIVITY= | |||
|GENE= | |||
}} | |||
'''X-RAY CRYSTALLOGRAPHIC STUDIES OF THE DENATURATION OF THE DENATURATION OF RIBONUCLEASE S.''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
1CJQ is a [ | 1CJQ is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CJQ OCA]. | ||
==Reference== | ==Reference== | ||
X-ray crystallographic studies of the denaturation of ribonuclease S., Ratnaparkhi GS, Varadarajan R, Proteins. 1999 Aug 15;36(3):282-94. PMID:[http:// | X-ray crystallographic studies of the denaturation of ribonuclease S., Ratnaparkhi GS, Varadarajan R, Proteins. 1999 Aug 15;36(3):282-94. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/10409822 10409822] | ||
[[Category: Bos taurus]] | [[Category: Bos taurus]] | ||
[[Category: Protein complex]] | [[Category: Protein complex]] | ||
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[[Category: ribonuclease]] | [[Category: ribonuclease]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 10:25:14 2008'' | ||
Revision as of 11:25, 20 March 2008
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| Coordinates: | save as pdb, mmCIF, xml | ||||||
X-RAY CRYSTALLOGRAPHIC STUDIES OF THE DENATURATION OF THE DENATURATION OF RIBONUCLEASE S.
OverviewOverview
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 (> 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.
About this StructureAbout this Structure
1CJQ is a Protein complex structure of sequences from Bos taurus. Full crystallographic information is available from OCA.
ReferenceReference
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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