1cxr

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[[Image:1cxr.gif|left|200px]]
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{{Seed}}
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[[Image:1cxr.png|left|200px]]
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{{STRUCTURE_1cxr| PDB=1cxr | SCENE= }}
{{STRUCTURE_1cxr| PDB=1cxr | SCENE= }}
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'''AUTOMATED 2D NOESY ASSIGNMENT AND STRUCTURE CALCULATION OF CRAMBIN(S22/I25) WITH SELF-CORRECTING DISTANCE GEOMETRY BASED NOAH/DIAMOD PROGRAMS'''
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===AUTOMATED 2D NOESY ASSIGNMENT AND STRUCTURE CALCULATION OF CRAMBIN(S22/I25) WITH SELF-CORRECTING DISTANCE GEOMETRY BASED NOAH/DIAMOD PROGRAMS===
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==Overview==
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The NOAH/DIAMOD program suite was used to automatically assign an experimental 2D NOESY spectrum of the 46 residue protein crambin(S22/I25), using feedback filtering and self-correcting distance geometry (SECODG). Automatically picked NOESY cross peaks were combined with 157 manually assigned peaks to start NOAH/DIAMOD calculations. At each cycle, DIAMOD was used to calculate an ensemble of 40 structures from these NOE distance constraints and random starting structures. The 10 structures with smallest target function values were analyzed by the structure-based filter, NOAH, and a new set of possible assignments was automatically generated based on chemical shifts and distance constraints violations. After 60 iterations and final energy minimization, the 10 structures with smallest target functions converged to 1.48 A for backbone atoms. Despite several missing chemical shifts, 426 of 613 NOE peaks were unambiguously assigned; 59 peaks were ambiguously assigned. The remaining 128 peaks picked automatically by FELIX are probably primarily noise peaks, with a few real peaks that were not assigned by NOAH due to the incomplete proton chemical shifts list.
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{{ABSTRACT_PUBMED_9887292}}
==About this Structure==
==About this Structure==
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1CXR is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Crambe_hispanica_subsp._abyssinica Crambe hispanica subsp. abyssinica]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CXR OCA].
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1CXR is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Crambe_hispanica_subsp._abyssinica Crambe hispanica subsp. abyssinica]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CXR OCA].
==Reference==
==Reference==
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[[Category: Crambin]]
[[Category: Crambin]]
[[Category: Plant seed protein feb. 20]]
[[Category: Plant seed protein feb. 20]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 13:13:31 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 21:44:09 2008''

Revision as of 18:44, 30 June 2008

Image:1cxr.png

Template:STRUCTURE 1cxr

AUTOMATED 2D NOESY ASSIGNMENT AND STRUCTURE CALCULATION OF CRAMBIN(S22/I25) WITH SELF-CORRECTING DISTANCE GEOMETRY BASED NOAH/DIAMOD PROGRAMS

Template:ABSTRACT PUBMED 9887292

About this Structure

1CXR is a Single protein structure of sequence from Crambe hispanica subsp. abyssinica. Full experimental information is available from OCA.

Reference

Automated 2D NOESY assignment and structure calculation of Crambin(S22/I25) with the self-correcting distance geometry based NOAH/DIAMOD programs., Xu Y, Wu J, Gorenstein D, Braun W, J Magn Reson. 1999 Jan;136(1):76-85. PMID:9887292

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