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High resolution lh nmr spectra of human apolipoprotein C-iii2 using DPC to model the lipoprotein environment



While the apolipoproteins play a central biochemical role in lipid transportation and cardiovascular diseases, structural studies of the apolipoproteins have been primarily confined to optical spectroscopies (circular dichroism and fluorescence). Using deuterated dodecylphosphocholine (DPC) to model the lipoprotein environment, we report the acquisition of high resolution lH NMR spectra for human apolipoprotein C-III2 isolated from the plasma of a type V hyperlipoproteinemic patient. At a peptide:DPC ratio of 1:60 the pK8 of His1s was determined to be 6.15 suggesting the residue is solvent accessible.
