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1shp

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[[Image:1shp.gif|left|200px]]
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{{STRUCTURE_1shp| PDB=1shp | SCENE= }}
{{STRUCTURE_1shp| PDB=1shp | SCENE= }}
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'''THE NMR SOLUTION STRUCTURE OF A KUNITZ-TYPE PROTEINASE INHIBITOR FROM THE SEA ANEMONE STICHODACTYLA HELIANTHUS'''
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===THE NMR SOLUTION STRUCTURE OF A KUNITZ-TYPE PROTEINASE INHIBITOR FROM THE SEA ANEMONE STICHODACTYLA HELIANTHUS===
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==Overview==
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The solution structure of a 55-amino-acid Kunitz-type proteinase inhibitor, ShPI, purified from the Caribbean sea anemone Stichodactyla helianthus, was determined by NMR spectroscopy. Nearly complete sequence-specific 1H-NMR assignments were obtained at pH 4.6 and 36 degrees C, and stereo-specific assignments were determined for 23 pairs of diastereotopic substituents. A data set of 666 upper distance limit constraints and 122 dihedral angle constraints collected on this basis was used as input for a structure calculation with the program DIANA. Following energy minimization with the program OPAL, the average root-mean-square diviation (RMSD) of the 20 DIANA conformers used to represent the solution structure relative to the mean structure is 61 pm for all backbone atoms N, C alpha and C', and 106 pm for all heavy atoms of residues 2-53. This high-quality solution structure of ShPI has a nearly identical molecular architecture as the bovine pancreatic trypsin inhibitor (BPTI), despite a mere 35% of sequence similarity between the two proteins. Exchange rates measured for 48 out of the 51 backbone amide protons showed that the positions of 20 slowly exchanging amide protons correlate well with hydrogen bonds involving these protons in the energy-minimized solution structure. The solution structure of ShPI is compared to the four homologous proteins for which the three-dimensional structure is also available.
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{{ABSTRACT_PUBMED_8462542}}
==About this Structure==
==About this Structure==
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1SHP is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Stichodactyla_helianthus Stichodactyla helianthus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1SHP OCA].
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1SHP is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Stichodactyla_helianthus Stichodactyla helianthus]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1SHP OCA].
==Reference==
==Reference==
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[[Category: Delfin, J.]]
[[Category: Delfin, J.]]
[[Category: Wuthrich, K.]]
[[Category: Wuthrich, K.]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 08:43:02 2008''
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Revision as of 14:53, 27 July 2008

Image:1shp.png

Template:STRUCTURE 1shp

THE NMR SOLUTION STRUCTURE OF A KUNITZ-TYPE PROTEINASE INHIBITOR FROM THE SEA ANEMONE STICHODACTYLA HELIANTHUS

Template:ABSTRACT PUBMED 8462542

About this Structure

1SHP is a Single protein structure of sequence from Stichodactyla helianthus. Full experimental information is available from OCA.

Reference

The NMR solution structure of a Kunitz-type proteinase inhibitor from the sea anemone Stichodactyla helianthus., Antuch W, Berndt KD, Chavez MA, Delfin J, Wuthrich K, Eur J Biochem. 1993 Mar 15;212(3):675-84. PMID:8462542

Page seeded by OCA on Sun Jul 27 17:53:38 2008

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