ArticleGlycobiology2023
Cataloging natural sialic acids and other nonulosonic acids (NulOs), and their representation using the Symbol Nomenclature for Glycans.
Article in Glycobiology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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8 citing papers in PubMed, 23 citations in OpenAlex.
- Cellular homeostasis of N-acetylneuraminic acid and non-canonical sialic acids is mediated by human N-acetylneuraminate lyase.Glycobiology · 2026Article
- Advancing Chemoenzymatic Synthesis and Covalent Immobilization of a Comprehensive Ganglio-glycosphingolipid Library Enables Functional Multiplex Bead Assays.Journal of the American Chemical Society · 2025Article
- Discovery and characterization of vertebrate sialoglycan-binding proteins.Seminars in immunology · 2025Review
- Loss of sialic acid side-chainProceedings of the National Academy of Sciences of the United States of America · 2025Article
- Posttranslational sialylation and its impact on neutrophil recruitment.Journal of leukocyte biology · 2025Review
- Glycoscience data content in the NCBI Glycans and PubChem.Analytical and bioanalytical chemistry · 2025Article
- Unveiling a novel exopolysaccharide produced by Pseudomonas alcaligenes Med1 isolated from a Chilean hot spring as biotechnological additive.Scientific reports · 2024Article
- A periodic table of monosaccharides.Glycobiology · 2024Article
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Authors and funding
16 authors at 11 institutions in 6 countries.
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Abstract
Nonulosonic acids or non-2-ulosonic acids (NulOs) are an ancient family of 2-ketoaldonic acids (α-ketoaldonic acids) with a 9-carbon backbone. In nature, these monosaccharides occur either in a 3-deoxy form (referred to as "sialic acids") or in a 3,9-dideoxy "sialic-acid-like" form. The former sialic acids are most common in the deuterostome lineage, including vertebrates, and mimicked by some of their pathogens. The latter sialic-acid-like molecules are found in bacteria and archaea. NulOs are often prominently positioned at the outermost tips of cell surface glycans, and have many key roles in evolution, biology and disease. The diversity of stereochemistry and structural modifications among the NulOs contributes to more than 90 sialic acid forms and 50 sialic-acid-like variants described thus far in nature. This paper reports the curation of these diverse naturally occurring NulOs at the NCBI sialic acid page (https://www.ncbi.nlm.nih.gov/glycans/sialic.html) as part of the NCBI-Glycans initiative. This includes external links to relevant Carbohydrate Structure Databases. As the amino and hydroxyl groups of these monosaccharides are extensively derivatized by various substituents in nature, the Symbol Nomenclature For Glycans (SNFG) rules have been expanded to represent this natural diversity. These developments help illustrate the natural diversity of sialic acids and related NulOs, and enable their systematic representation in publications and online resources.
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