Abstract
The amino acid sequence of the regulatory light chain of mantle muscle myosin from squid (Todarodes pacificus) was determined by conventional methods. It was: xA-E-E-A-P-R-R-V-K-L-S-Q-R-Q-M-Q-E-L-K-E-A-F-T-M-I-D-Q-D-R-D-G-F-I-G-M- E-D-L-K-D-M-F-S-S-L-G-R-V-P-P-D-D-E-L-N-A-M-L-K-E-C-P-G-Q-L-N-F-T- A-F-L-T-L-F-G-E-K-V-S-G-T-D-P-E-D-A-L-R-N-A-F-S-M-F-D-E-D-G-Q-G-F-I-P- E-D-Y-L-K-D-L-L-E-N-M-G-D-N-F-S-K-E-E-I-K-N-V-W-K-D-A-P-L-K-N-K-Q-F- N-Y-N-K-M-V-D-I-K-G-K-A-E-D-E-D. The alpha-amino group of this light chain was blocked, and a typical calcium-binding structure was recognized at the sequence of residue 26 to residue 37, like those in other myosin regulatory light chains.
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