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Updated: May 20, 2026
08:04
Determination of Sialic Acids in Liver and Milk Samples of Wild-type and CMAH Knock-out Mice.
Published on: July 14, 2017
Structure and Function of Mammalian Sialidases.
1Faculty of Medicine, Department of Biomedical Sciences and Biotechnology, University of Brescia, Brescia, Viale Europa 11, 25123, Brescia, Italy.
Topics in Current Chemistry
|July 5, 2012
Summary
Sialidases remove sialic acids, crucial for glycoprotein function. Mammalian sialidases regulate cellular processes and lysosomal catabolism, differing from microbial enzymes despite shared structural elements.
Area of Science:
- Biochemistry
- Molecular Biology
- Glycobiology
Background:
- Sialic acid removal by sialidase is key in breaking down complex carbohydrates.
- This process impacts glycoprotein conformation and molecular binding sites.
- Mammalian sialidases play regulatory roles in cellular functions and lysosomal breakdown.
Purpose of the Study:
- To review the structural and functional characteristics of mammalian sialidases.
- To highlight the distinct roles of mammalian versus microbial sialidases.
- To explore the evolutionary implications of shared structural motifs.
Main Methods:
- Literature review of sialidase research.
- Analysis of structural and sequence data for mammalian and microbial sialidases.
- Comparison of functional roles and biological significance.
Main Results:
- Mammalian sialidases are involved in regulating cellular functions and lysosomal catabolism.
- Microbial sialidases primarily function in nutrition and pathogenesis.
- Despite functional differences, mammalian sialidases share structural features (six-blade β-propeller) with microbial counterparts.
Conclusions:
- Mammalian sialidases possess unique regulatory functions beyond simple catabolism.
- Structural similarities suggest an evolutionary link between mammalian and microbial sialidases.
- Further research into mammalian sialidases is crucial for understanding cellular regulation.
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