J. Biochem, 1976, Vol. 80, No. 2 405-407
© 1976 Japanese Biochemical Society
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Connectin, an Elastic Protein from Myofibrils1
Department of Biophysics, Faculty of Science, University of Kyoto Sakyo-ku, Kyoto, Kyoto 606
The elastic protein isolated from myofibrils of chicken skeletal muscle was compared with extracellular non-collagenous reticulin prepared from chicken liver and skeletal muscle. The amino acid compositions of these proteins were similar except that their contents of Phe, Leu, Cys/2, and Hyp were different. The impregnations of the elastic protein and reticulin with silver were also different. The reticulin was not at all elastic. It also differed from reticulin in solubility and antigenicity. It is proposed to call the intracellular elastic protein connectin.
1 This work was supported by grants from the Muscular Dystrophy Association, Inc., the Ministry of Health and Welfare, and the Ministry of Education, Science and Culture, of Japan.
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