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Title: Novel fold of rotavirus glycan-binding domain predicted by AlphaFold2 and determined by X-ray crystallography

Abstract

The VP8* domain of spike protein VP4 in group A and C rotaviruses, which cause epidemic gastroenteritis in children, exhibits a conserved galectin-like fold for recognizing glycans during cell entry. In group B rotavirus, which causes significant diarrheal outbreaks in adults, the VP8* domain (VP8*B) surprisingly lacks sequence similarity with VP8* of group A or group C rotavirus. Here, by using the recently developed AlphaFold2 for ab initio structure prediction and validating the predicted model by determining a 1.3-Å crystal structure, we show that VP8*B exhibits a novel fold distinct from the galectin fold. This fold with a β-sheet clasping an α-helix represents a new fold for glycan recognition based on glycan array screening, which shows that VP8*B recognizes glycans containing N-acetyllactosamine moiety. Although uncommon, our study illustrates how evolution can incorporate structurally distinct folds with similar functionality in a homologous protein within the same virus genus.

Authors:
ORCiD logo [1];  [1]; ORCiD logo [2];  [3];  [3];  [1]; ORCiD logo [1]; ORCiD logo [1]
  1. Baylor College of Medicine, Houston, TX (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Emory Univ. School of Medicine, Atlanta, GA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; National Institutes of Health (NIH)
OSTI Identifier:
1880816
Grant/Contract Number:  
AC02-05CH11231; AI36040; P30 DK56338; P30 GM124169-01
Resource Type:
Accepted Manuscript
Journal Name:
Communications Biology
Additional Journal Information:
Journal Volume: 5; Journal Issue: 1; Journal ID: ISSN 2399-3642
Publisher:
Springer Nature
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; Biochemistry; X-ray crystallography

Citation Formats

Hu, Liya, Salmen, Wilhelm, Sankaran, Banumathi, Lasanajak, Yi, Smith, David F., Crawford, Sue E., Estes, Mary K., and Prasad, B. V. Venkataram. Novel fold of rotavirus glycan-binding domain predicted by AlphaFold2 and determined by X-ray crystallography. United States: N. p., 2022. Web. doi:10.1038/s42003-022-03357-1.
Hu, Liya, Salmen, Wilhelm, Sankaran, Banumathi, Lasanajak, Yi, Smith, David F., Crawford, Sue E., Estes, Mary K., & Prasad, B. V. Venkataram. Novel fold of rotavirus glycan-binding domain predicted by AlphaFold2 and determined by X-ray crystallography. United States. https://doi.org/10.1038/s42003-022-03357-1
Hu, Liya, Salmen, Wilhelm, Sankaran, Banumathi, Lasanajak, Yi, Smith, David F., Crawford, Sue E., Estes, Mary K., and Prasad, B. V. Venkataram. Thu . "Novel fold of rotavirus glycan-binding domain predicted by AlphaFold2 and determined by X-ray crystallography". United States. https://doi.org/10.1038/s42003-022-03357-1. https://www.osti.gov/servlets/purl/1880816.
@article{osti_1880816,
title = {Novel fold of rotavirus glycan-binding domain predicted by AlphaFold2 and determined by X-ray crystallography},
author = {Hu, Liya and Salmen, Wilhelm and Sankaran, Banumathi and Lasanajak, Yi and Smith, David F. and Crawford, Sue E. and Estes, Mary K. and Prasad, B. V. Venkataram},
abstractNote = {The VP8* domain of spike protein VP4 in group A and C rotaviruses, which cause epidemic gastroenteritis in children, exhibits a conserved galectin-like fold for recognizing glycans during cell entry. In group B rotavirus, which causes significant diarrheal outbreaks in adults, the VP8* domain (VP8*B) surprisingly lacks sequence similarity with VP8* of group A or group C rotavirus. Here, by using the recently developed AlphaFold2 for ab initio structure prediction and validating the predicted model by determining a 1.3-Å crystal structure, we show that VP8*B exhibits a novel fold distinct from the galectin fold. This fold with a β-sheet clasping an α-helix represents a new fold for glycan recognition based on glycan array screening, which shows that VP8*B recognizes glycans containing N-acetyllactosamine moiety. Although uncommon, our study illustrates how evolution can incorporate structurally distinct folds with similar functionality in a homologous protein within the same virus genus.},
doi = {10.1038/s42003-022-03357-1},
journal = {Communications Biology},
number = 1,
volume = 5,
place = {United States},
year = {Thu May 05 00:00:00 EDT 2022},
month = {Thu May 05 00:00:00 EDT 2022}
}

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