-transparent.png){kind=logo}
Neuraminidases of 18 strains of avian influenza A virus were examined by both colorimetric and fluorometric assays using fetuin and 4-methylumbelliferyl-N-Ac-alpha-D-neuraminide as substrates, respectively, to compare them with those of human influenza A and B viruses. The ratios of the neuraminidase activity of avian influenza virus measured by the colorimetric assay method to that measured by the fluorometric assay were distributed in the range of 2.4-20.3. The enzyme of avian influenza virus showed calcium-ion dependence in both assay methods. These results suggest that neuraminidase of avian influenza A virus is varies greatly from one strain to another in substrate specificity as compared with those of human influenza A and B viruses, and that some strains of avian influenza A virus have a neuraminidase with unique enzymological characteristics different from that of human influenza A virus as well as that of influenza B virus.
K Kiyotani, and
N Takei, and
M Senoo, and
S Takao, and
K Otsuki, and
M Tsubokura, and
T Yoshida
April 1977,
Health laboratory science,
K Kiyotani, and
N Takei, and
M Senoo, and
S Takao, and
K Otsuki, and
M Tsubokura, and
T Yoshida
November 2018,
Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi,
K Kiyotani, and
N Takei, and
M Senoo, and
S Takao, and
K Otsuki, and
M Tsubokura, and
T Yoshida
August 2011,
Virology journal,
K Kiyotani, and
N Takei, and
M Senoo, and
S Takao, and
K Otsuki, and
M Tsubokura, and
T Yoshida
June 2013,
Zhongguo dang dai er ke za zhi = Chinese journal of contemporary pediatrics,
K Kiyotani, and
N Takei, and
M Senoo, and
S Takao, and
K Otsuki, and
M Tsubokura, and
T Yoshida
April 2009,
Antiviral research,
K Kiyotani, and
N Takei, and
M Senoo, and
S Takao, and
K Otsuki, and
M Tsubokura, and
T Yoshida
February 1970,
Avian diseases,
K Kiyotani, and
N Takei, and
M Senoo, and
S Takao, and
K Otsuki, and
M Tsubokura, and
T Yoshida
May 1963,
Marquette medical review,
K Kiyotani, and
N Takei, and
M Senoo, and
S Takao, and
K Otsuki, and
M Tsubokura, and
T Yoshida
September 2017,
Journal of virological methods,
K Kiyotani, and
N Takei, and
M Senoo, and
S Takao, and
K Otsuki, and
M Tsubokura, and
T Yoshida
June 2014,
Genome announcements,
K Kiyotani, and
N Takei, and
M Senoo, and
S Takao, and
K Otsuki, and
M Tsubokura, and
T Yoshida
July 2010,
Zhonghua yi xue za zhi,
