1bhp

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[[Image:1bhp.gif|left|200px]]<br /><applet load="1bhp" size="350" color="white" frame="true" align="right" spinBox="true"
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[[Image:1bhp.gif|left|200px]]
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caption="1bhp, resolution 1.7&Aring;" />
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'''STRUCTURE OF BETA-PUROTHIONIN AT ROOM TEMPERATURE AND 1.7 ANGSTROMS RESOLUTION'''<br />
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{{Structure
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|PDB= 1bhp |SIZE=350|CAPTION= <scene name='initialview01'>1bhp</scene>, resolution 1.7&Aring;
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|SITE=
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|LIGAND= <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene>, <scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene> and <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>
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|ACTIVITY=
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|GENE=
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}}
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'''STRUCTURE OF BETA-PUROTHIONIN AT ROOM TEMPERATURE AND 1.7 ANGSTROMS RESOLUTION'''
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==Overview==
==Overview==
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==About this Structure==
==About this Structure==
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1BHP is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Triticum_aestivum Triticum aestivum] with <scene name='pdbligand=PO4:'>PO4</scene>, <scene name='pdbligand=ACT:'>ACT</scene> and <scene name='pdbligand=GOL:'>GOL</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1BHP OCA].
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1BHP is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Triticum_aestivum Triticum aestivum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1BHP OCA].
==Reference==
==Reference==
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Refinement of purothionins reveals solute particles important for lattice formation and toxicity. Part 2: structure of beta-purothionin at 1.7 A resolution., Stec B, Rao U, Teeter MM, Acta Crystallogr D Biol Crystallogr. 1995 Nov 1;51(Pt 6):914-24. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=15299761 15299761]
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Refinement of purothionins reveals solute particles important for lattice formation and toxicity. Part 2: structure of beta-purothionin at 1.7 A resolution., Stec B, Rao U, Teeter MM, Acta Crystallogr D Biol Crystallogr. 1995 Nov 1;51(Pt 6):914-24. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15299761 15299761]
[[Category: Single protein]]
[[Category: Single protein]]
[[Category: Triticum aestivum]]
[[Category: Triticum aestivum]]
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[[Category: PO4]]
[[Category: PO4]]
[[Category: plant toxin]]
[[Category: plant toxin]]
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[[Category: thionins]]
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[[Category: thionin]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 11:55:25 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 10:11:08 2008''

Revision as of 08:11, 20 March 2008

Image:1bhp.gif


PDB ID 1bhp

Drag the structure with the mouse to rotate
, resolution 1.7Å
Ligands: , and
Coordinates: save as pdb, mmCIF, xml



STRUCTURE OF BETA-PUROTHIONIN AT ROOM TEMPERATURE AND 1.7 ANGSTROMS RESOLUTION


Overview

The crystal structure of beta-purothionin (beta-PT) has been determined at 1.7 A resolution. beta-PT and previously solved alpha(l)-PT belong to a family of membrane-active plant toxins homologous to crambin. (beta-PT crystallizes in the same space group as alpha(l)-PT (1422) but with the c axis 3 A longer than (alpha(l)-PT. The unit-cell dimensions of beta-PT crystals are a = b = 53.94 and c = 72.75 A. Two data sets were collected on a multiwire area detector, each with R(sym) around 6.0%, and were merged to get a single data set at 1.7 A, (R(merge) = 9.6%). The X-ray structure of alpha(l)-PT was used to build a starting model for beta-PT. The beta-PT model was refined using the program PROLSQ from 10 to 1.7 A resolution to an R-factor of 19.8% with very good geometry. The final structure contains 439 atoms including 337 protein atoms, 77 waters, two acetates, two glycerols and one phosphate. The high-resolution structure of the beta-PT agreed well with that of the lower resolution alpha(l)-PT structure only after the latter was extensively rerefined. Both refinements revealed phosphate and glycerol molecules which are important in lattice formation. The binding of phosphate and glycerol molecules to purothionins (PT) was confirmed by NMR and was implicated in the biological activity of toxins. Modeling of phospholipid binding to PT based on glycerol and phosphate-binding site could shed light on the lytic toxicity of this protein-toxin family. Although the structures of (alpha(l)-PT and beta-PT preserve the overall fold of crambin, they exhibit key differences that are directly relevant to the toxicity of thionins.

About this Structure

1BHP is a Single protein structure of sequence from Triticum aestivum. Full crystallographic information is available from OCA.

Reference

Refinement of purothionins reveals solute particles important for lattice formation and toxicity. Part 2: structure of beta-purothionin at 1.7 A resolution., Stec B, Rao U, Teeter MM, Acta Crystallogr D Biol Crystallogr. 1995 Nov 1;51(Pt 6):914-24. PMID:15299761

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