Study of the O-acetylesterase activity of five influenza C virus strains
Identifieur interne : 000278 ( France/Analysis ); précédent : 000277; suivant : 000279Study of the O-acetylesterase activity of five influenza C virus strains
Auteurs : C. Sánchez-Bernal [Espagne] ; I. Mu Oz-Barroso [Espagne] ; J.-C. Manuguerra [France] ; C. Hannoun [France] ; J. A. Cabezas [Espagne]Source :
- Archives of Virology [ 0304-8608 ] ; 1998-09-01.
Abstract
Summary: Four influenza C virus strains, isolated in France in 1991, were used as a source for a kinetic study of the enzyme O-acetylesterase (EC 3.1.1.53) related to another strain, C/JHB/1/66, considered as the reference strain. Similarities, but also differences, in their haemagglutination titres were detected. Remarkable differences were found for enzyme activity and the Km, Vmax, and the V max/Km ratio between certain strains, as well as for their thermostability at 40 °C when methylumbelliferyl acetate was used as substrate. By contrast, their optimum pH, stability at different pH values, and stability at 4 °C over 14 days were very similar. The effect of some compounds on O-acetylesterase activity was studied. The peculiarities of these factors are discussed in relation to the functional variation of the virus.
Url:
DOI: 10.1007/s007050050416
Affiliations:
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Virol.</title><idno type="ISSN">0304-8608</idno><idno type="eISSN">1432-8798</idno><imprint><publisher>Springer-Verlag</publisher><pubPlace>Vienna</pubPlace><date type="published" when="1998-09-01">1998-09-01</date><biblScope unit="volume">143</biblScope><biblScope unit="issue">9</biblScope><biblScope unit="page" from="1783">1783</biblScope><biblScope unit="page" to="1790">1790</biblScope></imprint><idno type="ISSN">0304-8608</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0304-8608</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Summary: Four influenza C virus strains, isolated in France in 1991, were used as a source for a kinetic study of the enzyme O-acetylesterase (EC 3.1.1.53) related to another strain, C/JHB/1/66, considered as the reference strain. Similarities, but also differences, in their haemagglutination titres were detected. Remarkable differences were found for enzyme activity and the Km, Vmax, and the V max/Km ratio between certain strains, as well as for their thermostability at 40 °C when methylumbelliferyl acetate was used as substrate. By contrast, their optimum pH, stability at different pH values, and stability at 4 °C over 14 days were very similar. The effect of some compounds on O-acetylesterase activity was studied. The peculiarities of these factors are discussed in relation to the functional variation of the virus.</div></front></TEI><affiliations><list><country><li>Espagne</li><li>France</li></country></list><tree><country name="Espagne"><noRegion><name sortKey="Sanchez Bernal, C" sort="Sanchez Bernal, C" uniqKey="Sanchez Bernal C" first="C." last="Sánchez-Bernal">C. Sánchez-Bernal</name></noRegion><name sortKey="Cabezas, J A" sort="Cabezas, J A" uniqKey="Cabezas J" first="J. A." last="Cabezas">J. A. 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