生物
病毒学
水禽
受体
突变
病毒
H5N1亚型流感病毒
谱系(遗传)
血凝素(流感)
基因
遗传学
生态学
栖息地
作者
Kyoko Shinya,Akiko Makino,Masato Hatta,Shinji Watanabe,Jin Hyun Kim,Yoshihiro Kawaoka
标识
DOI:10.1099/vir.0.018572-0
摘要
A/Hong Kong/213/97 (HK213; H5N1), isolated from a human, binds to both avian- and human-type receptors, due to a haemagglutinin (HA) mutation probably acquired during adaptation to humans. Duck passage of this virus conferred lethality in ducks. Sequence analyses of the duck-passaged virus revealed that its HA gene reverted back to one recognizing only avian-type receptors, and consequently it bound human tissue to a lesser extent. This finding suggests that viruses with human-type receptor specificity are unlikely to be maintained in waterfowl, unlike those with the human-type PB2 mutation, such as H5N1 viruses of the Qinghai Lake lineage.
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