PMID- 3149468 OWN - NLM STAT- MEDLINE DCOM- 19890518 LR - 20190903 IS - 0006-2928 (Print) IS - 0006-2928 (Linking) VI - 26 IP - 9-10 DP - 1988 Oct TI - Genetic control of ganglioside biosynthesis in mice. PG - 631-44 AB - The enzymatic basis for the differences in hepatic ganglioside patterns in the mouse strains C57Bl/6 and Swiss White (SW) was investigated. SW has a "Swiss-type" ganglioside profile, expressing GM1- and GD1a- in addition to GM2- as major hepatic gangliosides, whereas C57Bl/6 shows a "GM2-type" profile, expressing only GM2- as the major hepatic ganglioside. The enzyme UDP-galactose:GM2 ganglioside galactosyltransferase (GM2-GalT), which catalyzes the synthesis of GM1 ganglioside, showed a four- to fivefold elevation in intact and solubilized liver Golgi membrane fractions of the SW strain compared to C57Bl/6. Crosses between C57Bl/6 and SW produced an F1 generation with a hepatic ganglioside and enzymatic phenotype intermediate between those of the two parental strains. All three genotypic groups show two forms of the Golgi apparatus enzyme with isoelectric points of 6.5-6.8 and 8.3-9.0. The simplest mode of action of genes which control the enzymatic phenotype that would be consistent with these findings are one or two structural genes or one or two cis-regulatory genes affecting the rate of enzyme synthesis. FAU - Sokoloff, D AU - Sokoloff D AD - Department of Biology, McGill University, Montreal, Quebec, Canada. FAU - Hechtman, P AU - Hechtman P LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Biochem Genet JT - Biochemical genetics JID - 0126611 RN - 0 (Gangliosides) RN - 0 (Isoenzymes) RN - EC 2.4.1.- (Galactosyltransferases) RN - EC 2.4.1.62 (Ganglioside Galactosyltransferase) SB - IM MH - Animals MH - Crosses, Genetic MH - Galactosyltransferases/*genetics/metabolism MH - Ganglioside Galactosyltransferase MH - Gangliosides/*biosynthesis MH - *Genes MH - Genes, Regulator MH - Golgi Apparatus/enzymology MH - Isoenzymes/*genetics/metabolism MH - Liver/*enzymology MH - Mice MH - Mice, Inbred C57BL MH - Species Specificity EDAT- 1988/10/01 00:00 MHDA- 1988/10/01 00:01 CRDT- 1988/10/01 00:00 PHST- 1988/10/01 00:00 [pubmed] PHST- 1988/10/01 00:01 [medline] PHST- 1988/10/01 00:00 [entrez] AID - 10.1007/BF02399607 [doi] PST - ppublish SO - Biochem Genet. 1988 Oct;26(9-10):631-44. doi: 10.1007/BF02399607.