2h3o

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[[Image:2h3o.gif|left|200px]]
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{{Seed}}
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[[Image:2h3o.png|left|200px]]
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{{STRUCTURE_2h3o| PDB=2h3o | SCENE= }}
{{STRUCTURE_2h3o| PDB=2h3o | SCENE= }}
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'''Structure of MERFT, a membrane protein with two trans-membrane helices'''
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===Structure of MERFT, a membrane protein with two trans-membrane helices===
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==Overview==
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The structure of the membrane protein MerFt was determined in magnetically aligned phospholipid bicelles by solid-state NMR spectroscopy. With two trans-membrane helices and a 10-residue inter-helical loop, this truncated construct of the mercury transport membrane protein MerF has sufficient structural complexity to demonstrate the feasibility of determining the structures of polytopic membrane proteins in their native phospholipid bilayer environment under physiological conditions. PISEMA, SAMMY, and other double-resonance experiments were applied to uniformly and selectively (15)N-labeled samples to resolve and assign the backbone amide resonances and to measure the associated (15)N chemical shift and (1)H-(15)N heteronuclear dipolar coupling frequencies as orientation constraints for structure calculations. (1)H/(13)C/(15)N triple-resonance experiments were applied to selectively (13)C'- and (15)N-labeled samples to complete the resonance assignments, especially for residues in the nonhelical regions of the protein. A single resonance is observed for each labeled site in one- and two-dimensional spectra. Therefore, each residue has a unique conformation, and all protein molecules in the sample have the same three-dimensional structure and are oriented identically in planar phospholipid bilayers. Combined with the absence of significant intensity near the isotropic resonance frequency, this demonstrates that the entire protein, including the loop and terminal regions, has a well-defined, stable structure in phospholipid bilayers.
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The line below this paragraph, {{ABSTRACT_PUBMED_16967977}}, adds the Publication Abstract to the page
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(as it appears on PubMed at http://www.pubmed.gov), where 16967977 is the PubMed ID number.
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{{ABSTRACT_PUBMED_16967977}}
==About this Structure==
==About this Structure==
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2H3O is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Morganella_morganii Morganella morganii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2H3O OCA].
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2H3O is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Morganella_morganii Morganella morganii]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2H3O OCA].
==Reference==
==Reference==
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[[Category: Bicelle]]
[[Category: Bicelle]]
[[Category: Membrane protein]]
[[Category: Membrane protein]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 05:49:54 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 02:36:58 2008''

Revision as of 23:37, 27 July 2008

Image:2h3o.png

Template:STRUCTURE 2h3o

Structure of MERFT, a membrane protein with two trans-membrane helices

Template:ABSTRACT PUBMED 16967977

About this Structure

2H3O is a Single protein structure of sequence from Morganella morganii. Full experimental information is available from OCA.

Reference

Structure determination of a membrane protein with two trans-membrane helices in aligned phospholipid bicelles by solid-state NMR spectroscopy., De Angelis AA, Howell SC, Nevzorov AA, Opella SJ, J Am Chem Soc. 2006 Sep 20;128(37):12256-67. PMID:16967977

Page seeded by OCA on Mon Jul 28 02:36:58 2008

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