Biophysical evidence of lipid and carbohydrate binding activities of shrimp high density lipoprotein/β glucan binding protein

Claudia L. Vargas-Requena, Alejandra Hernández-Santoyo, Gloria Yepiz-Plascencia, Francisco Vargas-Albores, Inocencio Higuera-Ciapara, Adela Rodríguez-Romero, José L. Soulages, Rogerio R. Sotelo-Mundo

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Crustacean High Density Lipoprotein/β-Glucan Binding Protein (HDL/BGBP) has been studied due to its role in nutrition and immune response via activation of the defense cells (hemocytes) upon binding 1,3-D-β-glucan carbohydrates. In this study, HDL/BGBP was found to be composed mainly of beta sheets, as determined by circular dichroism. Lipoprotein aggregation resulted when HDL/BGBP interacted with phospolipid vesicles, laminaribiose (1,3-β-glucan disaccharide) or heparin. HDL/BGBP has similar dissociation constants for laminaribiose (Kd=22 mM) or heparin (Kd=46 mM) as determined by 90° light scattering.

Original languageEnglish
Pages (from-to)337-344
Number of pages8
JournalProtein and Peptide Letters
Volume9
Issue number4
DOIs
StatePublished - 30 Jul 2002
Externally publishedYes

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