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Tropomyosin from the Striated Muscles of Carp (Cyprinus Carpio) and of Icefish (Channichthys Rhinoceratus)
Feller, Georges; D'Haese, J.; Gerday, Charles
1990In Archives Internationales de Physiologie et de Biochimie, 98 (5), p. 297-305
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Abstract :
[en] Tropomyosin of fast-twitch, slow-twitch and cardiac muscles of carp and icefish has been isolated by hydroxyapatite chromatography. The subunit distribution has been investigated by polyacrylamide gel electrophoresis and by peptide mapping. The purified skeletal muscle tropomyosins all belong to the alpha family and differ from higher vertebrate tropomyosin by the lack of beta subunits. Specific alpha isotypes are however encountered in fast-twitch fibres (alpha w subunit) and slow-twitch or intermediate (pink) fibres (alpha and alpha w subunits). The amino acid compositions and the paracrystals formed by the carp alpha w alpha w and alpha alpha w tropomyosins do not differ markedly from that of rabbit alpha alpha chains. They differ however by their capability to inhibit the ATPase activity of rabbit skeletal muscle acto-HMM system. A beta-like subunit is found in carp cardiac tropomyosin, in the proportion of 25% of the native protein, but not in icefish heart.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Feller, Georges ;  Université de Liège - ULiège > Département des sciences de la vie > Labo de biochimie
D'Haese, J.
Gerday, Charles ;  Université de Liège - ULiège > Services généraux (Faculté des sciences) > Relations académiques et scientifiques (Sciences)
Language :
English
Title :
Tropomyosin from the Striated Muscles of Carp (Cyprinus Carpio) and of Icefish (Channichthys Rhinoceratus)
Publication date :
October 1990
Journal title :
Archives Internationales de Physiologie et de Biochimie
ISSN :
0003-9799
Publisher :
Vaillant Carmanne, Belgium
Volume :
98
Issue :
5
Pages :
297-305
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 26 January 2010

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