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O-acetylation and de-O-acetylation of sialic acids. O-acetylation of sialic acids in the rat liver Golgi apparatus involves an acetyl intermediate and essential histidine and lysine residues--a transmembrane reaction?
Higa HH, Butor C, Diaz S, Varki A. Higa HH, et al. Among authors: varki a. J Biol Chem. 1989 Nov 15;264(32):19427-34. J Biol Chem. 1989. PMID: 2509477 Free article.
Isolated intact rat liver Golgi vesicles utilize [acetyl-3H]coenzyme A to add 3H-O-acetyl esters to sialic acids of internally facing endogenous glycoproteins. ...On the other hand, entry of intact AcCoA into the lumen of the vesicles could not be demonstrated, and permeab …
Isolated intact rat liver Golgi vesicles utilize [acetyl-3H]coenzyme A to add 3H-O-acetyl esters to sialic acids of internally facing …
O-acetylation and de-O-acetylation of sialic acids. 7- and 9-o-acetylation of alpha 2,6-linked sialic acids on endogenous N-linked glycans in rat liver Golgi vesicles.
Diaz S, Higa HH, Hayes BK, Varki A. Diaz S, et al. Among authors: varki a. J Biol Chem. 1989 Nov 15;264(32):19416-26. J Biol Chem. 1989. PMID: 2808433 Free article.
The incorporated radioactivity occurred in acid-soluble and acid-insoluble components, and the acid-insoluble fraction included O-acetylated sialic acids (Varki, A., and Diaz, S. (1985) J. Biol. Chem. 260, 6600-6608). Nearly all of the protein-associated radioactivi …
The incorporated radioactivity occurred in acid-soluble and acid-insoluble components, and the acid-insoluble fraction included O-acetylated …
O-acetylation and de-O-acetylation of sialic acids. Purification, characterization, and properties of a glycosylated rat liver esterase specific for 9-O-acetylated sialic acids.
Higa HH, Manzi A, Varki A. Higa HH, et al. Among authors: varki a. J Biol Chem. 1989 Nov 15;264(32):19435-42. J Biol Chem. 1989. PMID: 2808434 Free article.
We have previously described the preparation and use of 9-O-[acetyl-3H]acetyl-N-acetylneuraminic acid to identify sialic acid O-acetylesterases in tissues and cells (Higa, H. H., Diaz, S., and Varki, A. (1987) Biochem. Biophys. Res. Commun. 144, 1099-1108). All tiss …
We have previously described the preparation and use of 9-O-[acetyl-3H]acetyl-N-acetylneuraminic acid to identify sialic acid O-acetylestera …
Intramolecular self-cleavage of polysialic acid.
Manzi AE, Higa HH, Diaz S, Varki A. Manzi AE, et al. Among authors: varki a. J Biol Chem. 1994 Sep 23;269(38):23617-24. J Biol Chem. 1994. PMID: 8089131 Free article.
High level O-acetylation of sialic acids on N-linked oligosaccharides of rat liver membranes. Differential subcellular distribution of 7- and 9-O-acetyl groups and of enzymes involved in their regulation.
Butor C, Diaz S, Varki A. Butor C, et al. Among authors: varki a. J Biol Chem. 1993 May 15;268(14):10197-206. J Biol Chem. 1993. PMID: 8486687 Free article.
This distribution fits with the ability of the rat liver sialate: O-acetyltransferase(s) to synthesize both 7- and 9-O-acetyl esters (Diaz, S., Higa, H. H., Hayes, B. K., and Varki, A. (1989) J. Biol. Chem. 264, 19416-19426) and the fact that 7-O-acetyl esters can m …
This distribution fits with the ability of the rat liver sialate: O-acetyltransferase(s) to synthesize both 7- and 9-O-acetyl esters (Diaz, …
560 results