Purification and characterization of CMP-N-acetylneuraminic acid:Lactosylceramide (α2-3) sialyltransferase (GM3-synthase) from rat brain CMP-N-acetylneuraminic acid:lactosylceramide (alpha 2-3) sialyltransferase (GM3-synthase) was purified to homogeneity from a Triton CF-54 extract of young ....