Nature Communications (May 2022)

Unique binding pattern for a lineage of human antibodies with broad reactivity against influenza A virus

  • Xiaoyu Sun,
  • Caixuan Liu,
  • Xiao Lu,
  • Zhiyang Ling,
  • Chunyan Yi,
  • Zhen Zhang,
  • Zi Li,
  • Mingliang Jin,
  • Wenshuai Wang,
  • Shubing Tang,
  • Fangfang Wang,
  • Fang Wang,
  • Sonam Wangmo,
  • Shuangfeng Chen,
  • Li Li,
  • Liyan Ma,
  • Yaguang Zhang,
  • Zhuo Yang,
  • Xiaoping Dong,
  • Zhikang Qian,
  • Jianping Ding,
  • Dayan Wang,
  • Yao Cong,
  • Bing Sun

DOI
https://doi.org/10.1038/s41467-022-29950-w
Journal volume & issue
Vol. 13, no. 1
pp. 1 – 12

Abstract

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While most broadly neutralizing antibodies (bnAb) against Influenza virus target conserved conformational epitopes of the glycoprotein hemagglutinin (HA), Sun et al. characterize a lineage of bnAbs that neutralize group 1 and 2 strains. Structural characterization shows that antibody 28-12 binds a continuous epitope within H3 (group 2) but requires a conformational epitope for H1 (group 1) binding. Comparison of germline-reverted Ab and intermediate mutants provides evidence for an evolutionary adaptation from group 2 to group 1 strain.