Mutational analysis of human hydroxysteroid sulfotransferase SULT2B1 isoforms reveals that exon 1B of the SULT2B1 gene produces cholesterol sulfotransferase, whereas exon 1 A yields pregnenolone sulfotransferase - Fuda, H; Lee, Y C; Shimizu, C; Javitt, N B; Strott, C A (J Biol Chem, 2002)