The eosinophil major basic protein (EMBP) is the predominant constituent of the crystalline core of the eosinophil primary granule. EMBP is directly implicated in epithelial cell damage, exfoliation, and bronchospasm in allergic diseases such as asthma. Here we report the crystal structure of EMBP at 1.8 Å resolution, and show that it is similar to that of members of the C-type lectin superfamily with which it shares minimal amino acid sequence identity (∼15–28%). However, this protein lacks a Ca2+/carbohydrate-binding site. Our analysis suggests that EMBP specifically binds heparin. Based on our results, we propose a possible new function for this protein, which is likely to have implications for EMBP function.
Crystal Structure of the Eosinophil Major Basic Protein at 1.8 Å
G. Swaminathan,A. J. Weaver,D. Loegering,J. Checkel,D. Leonidas,G. Gleich,K. Acharya
Published 2001 in Journal of Biological Chemistry
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- Publication year
2001
- Venue
Journal of Biological Chemistry
- Publication date
2001-07-13
- Fields of study
Biology, Medicine, Chemistry
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- Source metadata
Semantic Scholar, PubMed
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