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| {{STRUCTURE_1pjd| PDB=1pjd | SCENE= }} | | {{STRUCTURE_1pjd| PDB=1pjd | SCENE= }} |
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- | '''Structure and Topology of a Peptide Segment of the 6th Transmembrane Domain of the Saccharomyces cerevisiae alpha-Factor Receptor in Phospholipid Bilayers'''
| + | ===Structure and Topology of a Peptide Segment of the 6th Transmembrane Domain of the Saccharomyces cerevisiae alpha-Factor Receptor in Phospholipid Bilayers=== |
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- | ==Overview==
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- | A detailed analysis of the structure of an 18-residue peptide AQSLLVPSIIFILAYSLK [M6(252-269, C252A)] in 1,2-dimyristoyl-sn-glycero-phosphocholine bilayers was carried out using solid state NMR and attenuated total reflection Fourier transform infrared spectroscopy. The peptide corresponds to a portion of the 6th transmembrane domain of the alpha-factor receptor of Saccharomyces cerevisiae. Ten homologs of M6(252-269, C252A) were synthesized in which individual residues were labeled with (15)N. One- and two-dimensional solid state NMR experiments were used to determine the chemical shifts and (1)H-(15)N dipolar coupling constants for the (15)N-labeled peptides in oriented dimyristoylphosphatidylcholine bilayers on stacked glass plates. These parameters were used to calculate the structure and orientation of M6(252-269, C252A) in the bilayers. The results indicate that the carboxyl terminal residues (9-14) are alpha-helical and oriented with an angle of about 8 degrees with respect to the bilayer normal. Independently, an attenuated total reflection Fourier transform infrared spectroscopy analysis on M6(252-269, C252A) in a 1,2-dimyristoyl-sn-glycero-phosphocholine bilayer concluded that the helix tilt angle was about 12.5 degrees. The results on the structure of M6(252-269, C252A) in bilayers are in good agreement with the structure determined in trifluoroethanol/water solutions (B. Arshava et al. Biopolymers, 1998, Vol. 46, pp. 343-357). The present study shows that solid state NMR spectroscopy can provide high resolution information on the structure of transmembrane domains of a G protein-coupled receptor.
| + | The line below this paragraph, {{ABSTRACT_PUBMED_11473349}}, adds the Publication Abstract to the page |
| + | (as it appears on PubMed at http://www.pubmed.gov), where 11473349 is the PubMed ID number. |
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| + | {{ABSTRACT_PUBMED_11473349}} |
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| ==About this Structure== | | ==About this Structure== |
- | 1PJD is a [[Single protein]] structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1PJD OCA]. | + | 1PJD is a [[Single protein]] structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1PJD OCA]. |
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| ==Reference== | | ==Reference== |
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| [[Category: Wang, S H.]] | | [[Category: Wang, S H.]] |
| [[Category: Alpha helix]] | | [[Category: Alpha helix]] |
- | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 05:08:57 2008'' | + | |
| + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 11:57:26 2008'' |
Revision as of 08:57, 29 July 2008
Template:STRUCTURE 1pjd
Structure and Topology of a Peptide Segment of the 6th Transmembrane Domain of the Saccharomyces cerevisiae alpha-Factor Receptor in Phospholipid Bilayers
Template:ABSTRACT PUBMED 11473349
About this Structure
1PJD is a Single protein structure. Full experimental information is available from OCA.
Reference
Structure and topology of a peptide segment of the 6th transmembrane domain of the Saccharomyces cerevisae alpha-factor receptor in phospholipid bilayers., Valentine KG, Liu SF, Marassi FM, Veglia G, Opella SJ, Ding FX, Wang SH, Arshava B, Becker JM, Naider F, Biopolymers. 2001 Oct 5;59(4):243-56. PMID:11473349
Page seeded by OCA on Tue Jul 29 11:57:26 2008
Categories: Single protein | Arshava, B. | Becker, J M. | Ding, F X. | Liu, S F. | Marassi, F M. | Naider, F. | Nevzorov, A A. | Opella, S J. | Valentine, K G. | Veglia, G. | Wang, S H. | Alpha helix