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lüll Three-dimensional models of HDL apoA-I: implications for its assembly and function Thomas MJ; Bhat S; Sorci-Thomas MGJ Lipid Res 2008[Sep]; 49 (9): 1875-83The purpose of this review is to highlight recent advances toward the refinement of a three-dimensional structure for lipid-bound apolipoprotein A-I (apoA-I) on recombinant HDL. Recently, X-ray crystallography has yielded a new structure for full-length, lipid-free apoA-I. Although this approach has not yet been successful in solving the three-dimensional structure of lipid-bound apoA-I, analysis of the X-ray structures has been of immense help in the interpretation of structural data obtained from other methods that yield structural information. Recent studies emphasize the use of mass spectrometry to unambiguously identify cross-linked peptides or to quantify solvent accessibility using hydrogen-deuterium exchange. The combination of mass spectrometry, molecular modeling, molecular dynamic analysis, and small-angle X-ray diffraction has provided additional structural information on apoA-I folding that complements previous approaches.|Apolipoprotein A-I/biosynthesis/*chemistry/physiology[MESH]|Cholesterol/metabolism[MESH]|Computer Simulation[MESH]|Deuterium Exchange Measurement[MESH]|Methionine/chemistry[MESH]|Models, Molecular[MESH]|Models, Structural[MESH]|Oxidation-Reduction[MESH]|Protein Conformation[MESH]|Recombinant Proteins/chemistry[MESH] |