Ward C W, Dopheide T A
Biochem J. 1981 Apr 1;195(1):337-40. doi: 10.1042/bj1950337.
The relationship between the haemagglutinin from the influenza virus A/duck/Ukraine/1/63 (Hav 7) and the human Hong Kong variants (H3) has been investigated. Amino-acid-sequence analysis shows that the Hav 7 haemagglutinin closely resembles the 1968 human H3 haemagglutinin in structure. However, the number of amino-acid-sequence differences (23) suggest that the Hong Kong haemagglutinin gene did not come directly from A/duck/Ukraine/1/63 but from a virus derived from it by antigenic drift during the period 1963-1968.
对甲型流感病毒A/鸭/乌克兰/1/63(Hav 7)的血凝素与人类香港变种(H3)之间的关系进行了研究。氨基酸序列分析表明,Hav 7血凝素在结构上与1968年的人类H3血凝素极为相似。然而,氨基酸序列差异的数量(23个)表明,香港血凝素基因并非直接来自A/鸭/乌克兰/1/63,而是来自1963年至1968年期间由其通过抗原漂移衍生出的一种病毒。