We isolated four kinds of rat cDNAs for the catalytic subunits of protein phosphatase-1,
PP-1α, PP-1γ1, PP-1γ2 and
PP-1δ (Sasaki, K,
et al. (1990) Jpn. J. Cancer Res., in press). Comparison between the predicted amino acid sequences of four cDNAs and the partial amino acid sequence of catalytic subunit from the glycogen bound form of PP-1 reported previously (Berndt, N.
et al. (1987) FEBS Lett. 223, 340-346) showed that
PP-1δ encodes catalytic subunit of glycogen bound form of PP-1 in the rabbit muscle.
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