This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.

5ktf

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 18:30, 15 November 2017

Structure of the C-terminal transmembrane domain of scavenger receptor BI (SR-BI)

Structural highlights

5ktf is a 1 chain structure with sequence from Lk3 transgenic mice. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
Gene:	Scarb1, Srb1 (LK3 transgenic mice)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[SCRB1_MOUSE] Receptor for different ligands such as phospholipids, cholesterol ester, lipoproteins, phosphatidylserine and apoptotic cells. Probable receptor for HDL, located in particular region of the plasma membrane, called caveolae. Facilitates the flux of free and esterified cholesterol between the cell surface and extracellular donors and acceptors, such as HDL and to a lesser extent, apoB-containing lipoproteins and modified lipoproteins. Probably involved in the phagocytosis of apoptotic cells, via its phosphatidylserine binding activity (By similarity). Plays an important role in the uptake of HDL cholesteryl ester (By similarity).

Publication Abstract from PubMed

The interaction of high-density lipoprotein (HDL) with its receptor, scavenger receptor BI (SR-BI), is critical for lowering plasma cholesterol levels and reducing the risk for cardiovascular disease. The HDL/SR-BI complex facilitates delivery of cholesterol into cells and is likely mediated by receptor dimerization. This work describes the use of nuclear magnetic resonance (NMR) spectroscopy to generate the first high-resolution structure of the C-terminal transmembrane domain of SR-BI. This region of SR-BI harbors a leucine zipper dimerization motif, which when mutated impairs the ability of the receptor to bind HDL and mediate cholesterol delivery. These losses in function correlate with the inability of SR-BI to form dimers. We also identify juxtamembrane regions of the extracellular domain of SR-BI that may interact with the lipid surface to facilitate cholesterol transport functions of the receptor.

NMR Structure of the C-Terminal Transmembrane Domain of the HDL Receptor, SR-BI, and a Functionally Relevant Leucine Zipper Motif.,Chadwick AC, Jensen DR, Hanson PJ, Lange PT, Proudfoot SC, Peterson FC, Volkman BF, Sahoo D Structure. 2017 Mar 7;25(3):446-457. doi: 10.1016/j.str.2017.01.001. Epub 2017, Feb 2. PMID:28162952^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Chadwick AC, Jensen DR, Hanson PJ, Lange PT, Proudfoot SC, Peterson FC, Volkman BF, Sahoo D. NMR Structure of the C-Terminal Transmembrane Domain of the HDL Receptor, SR-BI, and a Functionally Relevant Leucine Zipper Motif. Structure. 2017 Mar 7;25(3):446-457. doi: 10.1016/j.str.2017.01.001. Epub 2017, Feb 2. PMID:28162952 doi:http://dx.doi.org/10.1016/j.str.2017.01.001

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/5ktf"

@@ Line 3: / Line 3: @@
 <StructureSection load='5ktf' size='340' side='right' caption='[[5ktf]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[5ktf]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5KTF OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5KTF FirstGlance]. <br>
+<table><tr><td colspan='2'>[[5ktf]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Lk3_transgenic_mice Lk3 transgenic mice]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5KTF OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5KTF FirstGlance]. <br>
-</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5ktf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5ktf OCA], [http://pdbe.org/5ktf PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5ktf RCSB], [http://www.ebi.ac.uk/pdbsum/5ktf PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5ktf ProSAT]</span></td></tr>
+</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Scarb1, Srb1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 LK3 transgenic mice])</td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5ktf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5ktf OCA], [http://pdbe.org/5ktf PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5ktf RCSB], [http://www.ebi.ac.uk/pdbsum/5ktf PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5ktf ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 21: / Line 22: @@
 __TOC__
 </StructureSection>
+[[Category: Lk3 transgenic mice]]
 [[Category: Chadwick, A C]]
 [[Category: Peterson, F C]]

5ktf

From Proteopedia

Revision as of 18:30, 15 November 2017

Structure of the C-terminal transmembrane domain of scavenger receptor BI (SR-BI)

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox