Peer-Reviewed Journal Details
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Andre, S,Wang, GN,Gabius, HJ,Murphy, PV
2014
May
Carbohydrate Research
Combining glycocluster synthesis with protein engineering: an approach to probe into the significance of linker length in a tandem-repeat-type lectin (galectin-4)
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Altmetric: 1WOS: 16 ()
Optional Fields
Agglutinin Glycoprotein Lectin Modelling Terephthalamides Triazoles ENTEROCYTE-LIKE CELLS PANCREATIC-CARCINOMA MODEL HUMAN NEUROBLASTOMA-CELLS SUGAR CODE TETRAVALENT GLYCOCLUSTERS MOLECULAR SWITCHES RELEVANT LECTINS TERMINAL ALKYNES SURFACE BINDING DOWN-REGULATION
389
25
38
Complementarity in lectin-glycan interactions in situ is assumed to involve spatial features in both the lectin and the glycan, giving a functional meaning to structural aspects of the lectin beyond its carbohydrate-binding site. In combining protein engineering with glycocluster synthesis, it is shown that the natural linker length of a tandem-repeat-type human lectin (galectin-4) determines binding properties in two binding assays (using surface-presented glycoprotein and cell surface assays). The types of glycocluster tested included bivalent lactosides based on tertiary amides of terephthalic, isophthalic, 2,6-naphthalic and oxalic acids as well as bivalent H(type 2) trisaccharides grafted on secondary/tertiary terephthalamides and two triazole-linker-containing cores. The presented data reveal a marked change in susceptibility to the test compounds when turning the tandem-repeat-type to a proto-type-like display. The testing of glycoclusters is suggested as a general strategy to help to delineate the significance of distinct structural features of lectins beyond their contact sites to the glycan. (C) 2014 Elsevier Ltd. All rights reserved.
10.1016/j.carres.2013.12.024
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