the apolipoprotein e2 ( apoe2 ) variant that possesses a cysteine substituted for an arginine at residue 158 in the amino acid sequence e2 ( arg158 -- -- cys ) can be distinguished by sodium dodecyl sulfate-polyacrylamide gel electrophoresis from other forms of apoe , including e3 ( the parent form ) , e4 ( cys112 -- -- arg ) , e2 ( arg145 -- -- cys ) , and e2 ( lys146 -- -- gln ) .
C0052198
apolipoprotein e2
C0003595
apoe