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==SOLUTION STRUCTURE OF GAMMA 1-H AND GAMMA 1-P THIONINS FROM BARLEY AND WHEAT ENDOSPERM DETERMINED BY 1H-NMR: A STRUCTURAL MOTIF COMMON TO TOXIC ARTHROPOD PROTEINS==
==SOLUTION STRUCTURE OF GAMMA 1-H AND GAMMA 1-P THIONINS FROM BARLEY AND WHEAT ENDOSPERM DETERMINED BY 1H-NMR: A STRUCTURAL MOTIF COMMON TO TOXIC ARTHROPOD PROTEINS==
<StructureSection load='1gps' size='340' side='right'caption='[[1gps]], [[NMR_Ensembles_of_Models | 8 NMR models]]' scene=''>
<StructureSection load='1gps' size='340' side='right'caption='[[1gps]]' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1gps]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/English_wheat English wheat]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1GPS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1GPS FirstGlance]. <br>
<table><tr><td colspan='2'>[[1gps]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Triticum_turgidum Triticum turgidum]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1GPS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1GPS FirstGlance]. <br>
</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1gps FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1gps OCA], [https://pdbe.org/1gps PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1gps RCSB], [https://www.ebi.ac.uk/pdbsum/1gps PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1gps ProSAT]</span></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1gps FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1gps OCA], [https://pdbe.org/1gps PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1gps RCSB], [https://www.ebi.ac.uk/pdbsum/1gps PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1gps ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[https://www.uniprot.org/uniprot/DEF1_WHEAT DEF1_WHEAT]] Inhibits protein translation in cell-free systems.  
[https://www.uniprot.org/uniprot/DEF1_WHEAT DEF1_WHEAT] Inhibits protein translation in cell-free systems.
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1gps ConSurf].
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1gps ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The complete assignment of the proton NMR spectra of the homologous gamma 1-hordothionin and gamma 1-purothionin (47 amino acids, 4 disulfide bridges) from barley and wheat, respectively, has been performed by two-dimensional sequence-specific methods. A total of 299 proton-proton distance constraints for gamma 1-H and 285 for gamma 1-P derived from NOESY spectra have been used to calculate the three-dimensional solution structures. Initial structures have been generated by distance geometry methods and further refined by dynamical simulated annealing calculations. Both proteins show identical secondary and tertiary structure with a well-defined triple-stranded antiparallel beta-sheet (residues 1-6, 31-34, and 39-47), an alpha-helix (residues 16-28), and the corresponding connecting loops. Three disulfide bridges are located in the hydrophobic core holding together the alpha-helix and the beta-sheet and forming a cysteine-stabilized alpha-helical (CSH) motif. Moreover, a clustering of positive charges is observed on the face of the beta-sheet opposite to the helix. The three-dimensional structures of the gamma-thionins differ remarkably from plant alpha- and beta-thionins and crambin. However, they show a higher structural analogy with scorpion toxins and insect defensins which also present the CSH motif.
Solution structure of gamma 1-H and gamma 1-P thionins from barley and wheat endosperm determined by 1H-NMR: a structural motif common to toxic arthropod proteins.,Bruix M, Jimenez MA, Santoro J, Gonzalez C, Colilla FJ, Mendez E, Rico M Biochemistry. 1993 Jan 19;32(2):715-24. PMID:8380707<ref>PMID:8380707</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1gps" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[Plant defensin|Plant defensin]]
*[[Plant defensin|Plant defensin]]
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: English wheat]]
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Bruix, M]]
[[Category: Triticum turgidum]]
[[Category: Colilla, F J]]
[[Category: Bruix M]]
[[Category: Gonzalez, C]]
[[Category: Colilla FJ]]
[[Category: Jimenez, M A]]
[[Category: Gonzalez C]]
[[Category: Mendez, E]]
[[Category: Jimenez MA]]
[[Category: Rico, M]]
[[Category: Mendez E]]
[[Category: Santoro, J]]
[[Category: Rico M]]
[[Category: Plant toxin]]
[[Category: Santoro J]]

Revision as of 11:23, 27 March 2024

SOLUTION STRUCTURE OF GAMMA 1-H AND GAMMA 1-P THIONINS FROM BARLEY AND WHEAT ENDOSPERM DETERMINED BY 1H-NMR: A STRUCTURAL MOTIF COMMON TO TOXIC ARTHROPOD PROTEINS

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