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J Biochem. 1991 Jul;110(1):68-74.

The primary structure of skeletal muscle myosin heavy chain: III. Sequence of the 22 kDa fragment and the alignment of the 23 kDa, 50 kDa, and 22 kDa fragments.

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  • 1Department of Biochemistry, Nagasaki University School of Medicine.


The amino acid sequence of the 197-residue 22 kDa fragment from chicken pectoralis muscle was determined to be as follows: K-K-G-S-S-F-Q-T-V-S-A-L-F-R-E-N-L-N-K-L- M-A-N-L-R-S-T-H-P-H-F-V-R-C-I-I-P-N-E-T-K-T-P-G-A-M-E-H-E-L-V-L-H-Q-L-R- C-N-G-V- L-E-G-I-R-I-C-R-K-G-F-P-S-R-V-L-Y-A-D-F-K-Q-R-Y-R-V-L-N-A-S-A-I-P-E-G-Q- F-M-D-S- K-K-A-S-E-K-L-L-G-S-I-D-V-D-h-T-Q-Y-R-F-G-H-T-K-V-F-F-K-A-G-L-L-G-L-L-E- E-M-R-D- D-K-L-A-E-I-I-T-R-T-Q-A-R-C-R-G-F-L-M-R-V-E-Y-R-R-M-V-E-R-R-E-S-I-F-C-I- Q-Y-N-V-R-S-F-M-N-V-K-H-W-P-W-M-K-L-F-F-K, where h stands for 3-N-methylhistidine. The amino acid sequences of the 22 kDa fragment and its equivalent fragment from chicken ventricle and gizzard muscle myosins were also determined by our group. Predicted secondary structures of these 22 kDa fragment regions and of the reported chicken embryo myosin revealed some possible structural differences.(ABSTRACT TRUNCATED AT 250 WORDS)

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