Results 11 to 20 of about 4,989,359 (237)

Production of N-acetyl-D-neuraminic acid using two sequential enzymes overexpressed as double-tagged fusion proteins [PDF]

open access: goldBMC Biotechnology, 2009
Background Two sequential enzymes in the production of sialic acids, N-acetyl-D-glucosamine 2-epimerase (GlcNAc 2-epimerase) and N-acetyl-D-neuraminic acid aldolase (Neu5Ac aldolase), were overexpressed as double-tagged gene fusions.
Cheng Chung-Hsien   +5 more
doaj   +3 more sources

Sialic acids, sialoconjugates and enzymes of their metabolism in fungi

open access: yesBiotechnology & Biotechnological Equipment, 2021
Sialic acids (Sia) represent a set of derivatives of nine-carbon sugar neuraminic acid that occupy a terminal position in oligosaccharide chains located on the surface of cells. They are very important for several physiological and pathological processes,
Rumyana Eneva   +4 more
doaj   +2 more sources

Many locks to one key: N-acetylneuraminic acid binding to proteins [PDF]

open access: yesIUCrJ
Sialic acids play crucial roles in cell surface glycans of both eukaryotic and prokaryotic organisms, mediating various biological processes, including cell–cell interactions, development, immune response, oncogenesis and host–pathogen interactions. This
KanagaVijayan Dhanabalan   +3 more
doaj   +2 more sources

Synthesis of 9-O-Acetyl- and 4,9-Di-O-Acetyl Derivatives of the Methyl Ester of N-Acetyl-β-D-Neuraminic Acid Methylglycoside. Their Use as Models in Periodate Oxidation Studies [PDF]

open access: greenHoppe-Seyler´s Zeitschrift für physiologische Chemie, 1975
Reaction of the methyl ester of N-acetyl-beta-D-neuraminic acid methyl glycoside with N-acetylimidazole yielded the corresponding 9-O-acetyl- and 4,9-di-O-acetyl derivatives.
Johan Haverkamp   +4 more
openalex   +2 more sources

Dynamic Changes of Microbial Communities and Chemical Compounds During the Dry Processing of Coffea arabica [PDF]

open access: yesFood Science &Nutrition, Volume 13, Issue 4, April 2025.
Tatumella, Klebsiella, Gluconobacter, Brevundimonas, and Staphylococcus at the bacterial general level and Candida, Lachancea, Aschersonia, Cercospora, and Pichia at the fungi general level were the predominant microorganisms during the dry processing of Coffea arabica.
Xiaojing Shen   +7 more
wiley   +2 more sources

Neuraminic Acid Derivatives Newly Discovered in Humans: N-Acetyl-9-O-L-lactoylneuraminic Acid, N,9-O-Diacetylneuraminic Acid and N-Acetyl-2,3-dehydro-2-deoxyneuraminic Acid [PDF]

open access: greenHoppe-Seyler´s Zeitschrift für physiologische Chemie, 1976
The free and glycosidically bound acylneuraminic acids from human serum and saliva and the free acylneuraminic acids from human urine have been characterized by thin-layer chromatography and gas-liquid chromatography/mass spectrometry.
Johan Haverkamp   +6 more
openalex   +2 more sources

Stereoselective Synthesis of a C-Linked Neuraminic Acid Disaccharide: Potential Building Block for the Synthesis of C-Analogues of Polysialic acids [PDF]

open access: greenJournal of Organic Chemistry, 2008
C-linked neuraminic acid disaccharide was synthesized in a diastereoselective manner from a sulfone donor and aldehyde acceptor, which was protected as a propargyl ether, through a samarium-mediated coupling reaction.
Jin Hwan Kim   +3 more
openalex   +2 more sources

Synthesis of Nor-C-linked Neuraminic Acid Disaccharide: A Versatile Precursor of C-Analogs of Oligosialic Acids and Gangliosides [PDF]

open access: greenJournal of Organic Chemistry, 2007
The Neu5Acalpha(2,8)Neu5Ac disaccharide is an important constituent of tumor related antigen, however, the O-linkage is catabolically unstable. Vaccination with a catabolically stable sialic acid C-glycoside analog might enhance immunogenicity.
Xuejun Yuan   +2 more
openalex   +2 more sources

Characterization of the Acid Stability of Glycosidically Linked Neuraminic Acid [PDF]

open access: hybridJournal of Biological Chemistry, 2002
The glycosidic linkage of sialic acids is much more sensitive to acid hydrolysis than those of other monosaccharides in vertebrates. The commonest sialic acids in nature are neuraminic acid (Neu)-based and are typicallyN-acylated at the C5 position ...
Justin L. Sonnenburg   +2 more
openalex   +2 more sources

Detection of N-glycolyl-neuraminic acid-containing glycolipids in human skin. [PDF]

open access: goldFront Immunol, 2023
Manni M   +8 more
europepmc   +3 more sources

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