5KTF

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


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 20 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

NMR Structure of the C-Terminal Transmembrane Domain of the HDL Receptor, SR-BI, and a Functionally Relevant Leucine Zipper Motif.

Chadwick, A.C.Jensen, D.R.Hanson, P.J.Lange, P.T.Proudfoot, S.C.Peterson, F.C.Volkman, B.F.Sahoo, D.

(2017) Structure 25: 446-457

  • DOI: 10.1016/j.str.2017.01.001

  • PubMed Abstract: 
  • 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 cho ...

    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.


    Organizational Affiliation

    Department of Biochemistry, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Scavenger receptor class B member 1
A
73Mus musculusGene Names: Scarb1 (Srb1)
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
High-Density Lipoprotein (HDL) Receptors
Protein: 
C-terminal transmembrane domain of scavenger receptor BI (SR-BI)
Find proteins for Q61009 (Mus musculus)
Go to UniProtKB:  Q61009
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 20 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationCountryGrant Number
National Institutes of Health/National Heart, Lung, and Blood InstituteUnited StatesR01HL58012
National Institutes of Health/National Institute Of Allergy and Infectious DiseasesUnited StatesR01AI058072
American Heart AssociationUnited StatesAHA14PRE185800221

Revision History 

  • Version 1.0: 2017-03-08
    Type: Initial release
  • Version 1.1: 2017-03-22
    Type: Database references
  • Version 1.2: 2017-09-20
    Type: Author supporting evidence