3por

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[[Image:3por.jpg|left|200px]]<br /><applet load="3por" size="350" color="white" frame="true" align="right" spinBox="true"
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[[Image:3por.jpg|left|200px]]
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caption="3por, resolution 2.5&Aring;" />
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'''PORIN CONFORMATION IN THE ABSENCE OF CALCIUM; REFINED STRUCTURE AT 2.5 ANGSTROMS RESOLUTION'''<br />
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{{Structure
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|PDB= 3por |SIZE=350|CAPTION= <scene name='initialview01'>3por</scene>, resolution 2.5&Aring;
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|SITE=
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|LIGAND= <scene name='pdbligand=C8E:(HYDROXYETHYLOXY)TRI(ETHYLOXY)OCTANE'>C8E</scene> and <scene name='pdbligand=TRS:2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL'>TRS</scene>
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|ACTIVITY=
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|GENE=
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}}
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'''PORIN CONFORMATION IN THE ABSENCE OF CALCIUM; REFINED STRUCTURE AT 2.5 ANGSTROMS RESOLUTION'''
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==Overview==
==Overview==
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==About this Structure==
==About this Structure==
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3POR is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Rhodobacter_capsulatus Rhodobacter capsulatus] with <scene name='pdbligand=C8E:'>C8E</scene> and <scene name='pdbligand=TRS:'>TRS</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3POR OCA].
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3POR is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Rhodobacter_capsulatus Rhodobacter capsulatus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3POR OCA].
==Reference==
==Reference==
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Porin conformation in the absence of calcium. Refined structure at 2.5 A resolution., Weiss MS, Schulz GE, J Mol Biol. 1993 Jun 5;231(3):817-24. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=7685826 7685826]
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Porin conformation in the absence of calcium. Refined structure at 2.5 A resolution., Weiss MS, Schulz GE, J Mol Biol. 1993 Jun 5;231(3):817-24. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/7685826 7685826]
[[Category: Rhodobacter capsulatus]]
[[Category: Rhodobacter capsulatus]]
[[Category: Single protein]]
[[Category: Single protein]]
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[[Category: integral membrane protein porin]]
[[Category: integral membrane protein porin]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 19:10:54 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 19:06:43 2008''

Revision as of 17:06, 20 March 2008

Image:3por.jpg


PDB ID 3por

Drag the structure with the mouse to rotate
, resolution 2.5Å
Ligands: and
Coordinates: save as pdb, mmCIF, xml



PORIN CONFORMATION IN THE ABSENCE OF CALCIUM; REFINED STRUCTURE AT 2.5 ANGSTROMS RESOLUTION


Overview

The crystal structure of porin from Rhodobacter capsulatus in the absence of divalent calcium ions has been refined to convergence at a resolution of 2.5 A using the simulated annealing refinement method. The final model consists of all 301 amino acid residues, 77 solvent molecules, one tris(hydroxymethyl)-aminomethane molecule and one unknown ligand modeled as n-octyltetraoxyethylene. A superposition with the previously described model containing three calcium ions showed structural changes at the segment 108-116 of the inner loop beta 5-beta 6, and at loops beta 8-beta 9 and beta 11-beta 12 at the extracellular side of the porin molecule. Evidence is presented that the conformational changes depend on the presence or absence of calcium ions. A possible influence on porin function is discussed.

About this Structure

3POR is a Single protein structure of sequence from Rhodobacter capsulatus. Full crystallographic information is available from OCA.

Reference

Porin conformation in the absence of calcium. Refined structure at 2.5 A resolution., Weiss MS, Schulz GE, J Mol Biol. 1993 Jun 5;231(3):817-24. PMID:7685826

Page seeded by OCA on Thu Mar 20 19:06:43 2008

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