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. 1982 Oct;79(20):6128-31.
doi: 10.1073/pnas.79.20.6128.

n-Tetradecanoyl is the NH2-terminal blocking group of the catalytic subunit of cyclic AMP-dependent protein kinase from bovine cardiac muscle

S A Carr, K Biemann, S Shoji, D C Parmelee, K Titani

n-Tetradecanoyl is the NH2-terminal blocking group of the catalytic subunit of cyclic AMP-dependent protein kinase from bovine cardiac muscle

S A Carr et al. Proc Natl Acad Sci U S A. 1982 Oct.

Abstract

The unusual NH2-terminal blocking group of the catalytic subunit of bovine cardiac muscle cyclic AMP-dependent protein was found to be amide-linked n-tetradecanoic acid by gas chromatographic-, direct chemical ionization-, and fast atom bombardment-mass spectrometry. In addition, fast atom bombardment mass spectrometry revealed the presence of an additional alanine which had been overlooked when the original sequence was determined. The corrected and completed NH2-terminal sequence of the 350-amino acid catalytic subunit is CH3(CH2)12CONH-Gly-Asn-Ala-Ala-Ala-Ala-Lys.

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