Summary
A new glycoprotein of 31,500 dalton, which has a high affinity for ouabain, and is independent of (Na+−K+)-ATPase, was solubilized from transverse tubule membrane and junctional sarcoplasmic reticulum complexes (TTM-JSR) of cat cardiac muscle. This protein could be extracted only in small amounts from sarcolemmaplasma membrane (SLM-PL) fragments, suggesting that it indeed originates from the TTM-JSR.
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Fujino, S., Satoh, K., Bando, T. et al. Solubilization and characterization of a ouabain-sensitive protein from transverse tubule membranejunctional sarcoplasmic reticulum complexes (TTM-JSR) in cat cardiac muscle. Experientia 45, 466–469 (1989). https://doi.org/10.1007/BF01952032
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DOI: https://doi.org/10.1007/BF01952032