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Journal of Glycobiology | ISSN: 2168-958X | Volume 7
Glycobiology & Glycoproteomics
5th International Conference on
&
August 27-28, 2018 | Toronto, Canada
Molecular Biology & Nucleic Acids
3rd International Conference on
Roles of polyvalency of glycotopes in the mechanismof protein-glycan interactions-one of the most potential
directions for the transforming glycosciences
Lectins are Glycan-Binding Proteins (GBP). On cell surfaces, they mediate cell-cell interactions by combining with
complementary carbohydrates on opposing cells. They play a key role in the control of various normal and pathological
processes in living organisms, such as fertilization, embryogenesis, cell migration, organ formation, immune defense, and
microbial infection. Improper function of cell recognition may cause disease. (Sharon and Lis, Science, 1989 246,227) The
hallmark of lectins is the ability to bind carbohydrates specially and reversible. To provide a more valid and satisfactory depiction
of the carbohydrate specificity (RFs, Recognition Factors) of lectins in order to elucidate their functional roles and to optimize
their biomedical applications, the following RFs have to be defined— (i) Sub-monosaccharide RFs (epimers and anomers
of monosaccharides); (ii) Monosaccharide specificity (Gal, GalNAc, GlcNAc, Man, LFuc, and Sialic acid from mammalian
glycans); (iii) Expression of a lectin reactivities toward structural units by decreasing order; (iv) the most active ligand; (v)
simple multivalent or cluster forms of carbohydrate structural units; (vi) complex polyvalent structural units and/or glycotopes
as well as their resulting conformational features present in macromolecules. These RFs can be divided into two forms for
different functions- the Mono- forms are the weak RFs and provide mainly essential and basic structures for lectin identification
and classification, while their polyvalent forms and resulting conformation features play a critical role in recognition intensities.
The Roles of Polyvalency of Glycotopes in the Mechanism of Protein-Glycan interactions- should be one of the most advanced
achievements in the field of Glycoimmunology since 1980.
Biography
Wu obtained his PhD degree with W Pigman, who is one of the pioneers in glycoproteins, at New York Medical College; and had his postdoctoral training at EA
Kabat’s Lab for quantitative immunochemistry, Columbia University Medical Center, New York. He joined as a faculty position at Texas A&M University in 1982;
promoted as a full professor at Chang-Gung University since 1989; and as Emeritus Professor after 2011. Dr Wu published over 120 glycoprotein and polyvalent
glycotopes related papers. He is the chief editor for three volumes of Molecular Immunology of Complex Carbohydrates 1 to 3 in Adv. Exp. Med. Biol. 228, 451,
705 (Springer Publisher). His major interests are (i) Glycan purification and characterization; (ii) recognition factors of glycans; (iii) combining sites of lectins and
antibodies. He received many Outstanding Research Awards from government agents in Taiwan and USA.
Albert MWu
Chang-Gung University, Taiwan
Albert M Wu, J Glycobiol 2018, Volume 7
DOI: 10.4172/2168-958X-C1-010