Structural basis of glycan specificity in neonate-specific bovine-human reassortant rotavirus
- Baylor College of Medicine, Houston, TX (United States). Verna and Marrs McLean Department of Biochemistry and Molecular Biology
- Baylor College of Medicine, Houston, TX (United States). Department of Molecular Virology and Microbiology
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Emory Univ.School of Medicine, Atlanta, GA (United States)
- Baylor College of Medicine, Houston, TX (United States). Verna and Marrs McLean Department of Biochemistry and Molecular Biology; Baylor College of Medicine, Houston, TX (United States). Department of Molecular Virology and Microbiology
We report that strain-dependent variation of glycan recognition during initial cell attachment of viruses is a critical determinant of host specificity, tissue-tropism and zoonosis. Rotaviruses (RVs), which cause life-threatening gastroenteritis in infants and children, display significant genotype-dependent variations in glycan recognition resulting from sequence alterations in the VP8* domain of the spike protein VP4. The structural basis of this genotype-dependent glycan specificity, particularly in human RVs, remains poorly understood. Here, from crystallographic studies, we show how genotypic variations configure a novel binding site in the VP8* of a neonate-specific bovine-human reassortant to uniquely recognize either type I or type II precursor glycans, and to restrict type II glycan binding in the bovine counterpart. In conclusion, such a distinct glycan-binding site that allows differential recognition of the precursor glycans, which are developmentally regulated in the neonate gut and abundant in bovine and human milk provides a basis for age-restricted tropism and zoonotic transmission of G10P[11] rotaviruses.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1256040
- Journal Information:
- Nature Communications, Journal Name: Nature Communications Vol. 6; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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