Tuning carbohydrate density enhances protein binding and inhibition by glycosylated β-sheet peptide nanofibers

2018 ◽  
Vol 6 (9) ◽  
pp. 2327-2335 ◽  
Author(s):  
Antonietta Restuccia ◽  
Gregory A. Hudalla
Keyword(s):  
Protein Binding ◽  
Binding Affinity ◽  
Binding Proteins ◽  
Carbohydrate Binding ◽  
Peptide Nanofibers ◽  
Carbohydrate Binding Proteins ◽  
Β Sheet

The efficacy of glycosylated β-sheet peptide nanofibers for inhibiting carbohydrate-binding proteins can be increased by tuning carbohydrate density to maximize protein binding affinity.

scholarly journals Screening for carbohydrate-binding proteins in extracts of Uruguayan plants

2003 ◽  
Vol 36 (7) ◽  
pp. 851-860 ◽  
Author(s):  
A. Plá ◽  
E. Alonso ◽  
F. Batista-Viera ◽  
L. Franco Fraguas
Keyword(s):  
Binding Proteins ◽  
Carbohydrate Binding ◽  
Carbohydrate Binding Proteins

Effect of microenvironment and cell-line type on carbohydrate-binding proteins of macrophage-like cells

1988 ◽  
Vol 66 (11) ◽  
pp. 1169-1176 ◽  
Author(s):  
Hans-Joachim Gabius ◽  
Katalin Vehmeyer
Keyword(s):  
Binding Proteins ◽  
Cultured Cells ◽  
Sodium Dodecyl ◽  
Carbohydrate Binding ◽  
Intercellular Interaction ◽  
Cell Extracts ◽  
Carbohydrate Binding Proteins ◽  
Sugar Receptors

The pattern of sugar inhibition of rosette formation, a model for intercellular interaction between cultured cells and glutaraldehyde-fixed, trypsinated rabbit erythrocytes, served to infer the presence of carbohydrate-binding proteins. This profile from cell extracts for the two murine macrophage-like cell lines, P388D1 and J774A.1, was comparatively analyzed by affinity chromatography on supports with immobilized carbohydrates (lactose, L-fucose, N-acetyl-D-glucosamine, N-acetyl-D-galactosamine, and maltose) or with the immobilized mannose-rich yeast glycoprotein mannan or fetuin-derived glycopeptides containing sialic acid residues. After elution with specific sugar in the absence of Ca2+ ions, the proteins were separated by sodium dodecyl sulfate – polyacrylamide slab gel electrophoresis. The composition of carbohydrate-binding proteins of the two lines clearly exhibited quantitative and qualitative differences. Moreover, the pattern of P388D1 cells was also demonstrated to change significantly in response to alterations in the conditions of the physiological environment. These alterations were imposed by in vitro growth, by subsequent in vivo growth in nude mice, and by re-adaptation of cells to culture after in vivo passage. Collectively, our observations and other physiological and biochemical reports on macrophage lectins indicate that the presence of sugar receptors with different specificities may be an indicator of macrophage differentiation, being reversibly modulated to a considerable extent by external factors, e.g., microenvironment. Extensive but selective alterations in this respect could play an important role in the control of recognition and effector mechanisms within diverse functions of macrophage subpopulations.

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