PMID- 10473542 OWN - NLM STAT- MEDLINE DCOM- 19991007 LR - 20210209 IS - 0021-9258 (Print) IS - 0021-9258 (Linking) VI - 274 IP - 37 DP - 1999 Sep 10 TI - A new type of carbohydrate-deficient glycoprotein syndrome due to a decreased import of GDP-fucose into the golgi. PG - 25986-9 AB - The fucosylation of glycoproteins was found to be deficient in a patient with a clinical phenotype resembling that of leukocyte adhesion deficiency type II (LAD II). While in LAD II hypofucosylation of glycoconjugates is secondary to an impaired synthesis of GDP-fucose due to a deficiency of the GDP-D-mannose-4, 6-dehydratase, synthesis of GDP-fucose was normal in our patient (Korner, C., Linnebank, M., Koch, H., Harms, E., von Figura, K., and Marquardt, T. (1999) J. Leukoc. Biol., in press). Import of GDP-fucose into Golgi-enriched vesicles was composed of a saturable, high affinity and a nonsaturable component. In our patient the saturable high affinity import of GDP-fucose was deficient, while import of UDP-galactose and the activity of GDPase, which generates the nucleoside phosphate required for antiport of GDP-fucose, were normal. Addition of L-fucose to the medium of fibroblasts restored the fucosylation of glycoproteins. We propose that this new form of carbohydrate-deficient glycoprotein syndrome is caused by impaired import of GDP-fucose into the Golgi. FAU - Lubke, T AU - Lubke T AD - Georg-August-Universitat Gottingen, Abteilung Biochemie II, Heinrich-Duker-Weg 12, D-37073 Gottingen, Germany. FAU - Marquardt, T AU - Marquardt T FAU - von Figura, K AU - von Figura K FAU - Korner, C AU - Korner C LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Biol Chem JT - The Journal of biological chemistry JID - 2985121R RN - 15839-70-0 (Guanosine Diphosphate Fucose) SB - IM MH - Biological Transport MH - Cells, Cultured MH - Congenital Disorders of Glycosylation/*metabolism MH - Golgi Apparatus/*metabolism MH - Guanosine Diphosphate Fucose/*metabolism MH - Humans EDAT- 1999/09/03 00:00 MHDA- 1999/09/03 00:01 CRDT- 1999/09/03 00:00 PHST- 1999/09/03 00:00 [pubmed] PHST- 1999/09/03 00:01 [medline] PHST- 1999/09/03 00:00 [entrez] AID - S0021-9258(19)55172-9 [pii] AID - 10.1074/jbc.274.37.25986 [doi] PST - ppublish SO - J Biol Chem. 1999 Sep 10;274(37):25986-9. doi: 10.1074/jbc.274.37.25986.