Amino Acid Sequences of the Two Kinds of Regulatory Light Chains of Adductor Smooth Muscle Myosin from Patinopecten yessoensis

Smooth muscle myosin from scallop (Patinopecten yessoensis) adductor muscle contains two kinds of regulatory light chains (regulatory light chains a and b), and myosin having regulatory light chain a is suggested to be suitable for inducing “catch contraction” rather than myosin having regulatory li...

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Bibliographic Details
Published in:Journal of biochemistry (Tokyo) 1985, Vol.97 (2), p.541-551
Main Authors: MIYANISHI, Takayuki, MAITA, Tetsuo, MORITA, Fumi, KONDO, Shuhei, MATSUDA, Genji
Format: Article
Language:English
Subjects:
adductor muscle
Amino Acid Sequence
Analytical, structural and metabolic biochemistry
Animals
Biological and medical sciences
Chemical Phenomena
Chemistry
Chymotrypsin
Contractile proteins
Fundamental and applied biological sciences. Psychology
Holoproteins
Mollusca - analysis
Muscle, Smooth - analysis
myosin
Myosin Subfragments
Myosins - isolation & purification
Patinopecten yessoensis
Peptide Fragments - analysis
Peptide Fragments - isolation & purification
Proteins
smooth muscle
Trypsin
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Summary:Smooth muscle myosin from scallop (Patinopecten yessoensis) adductor muscle contains two kinds of regulatory light chains (regulatory light chains a and b), and myosin having regulatory light chain a is suggested to be suitable for inducing “catch contraction” rather than myosin having regulatory light chain b (Kondo, S. & Morita, F. (1981) J. Biochem. 90, 673–681). The amino acid sequences of these two light chains were determined and compared. Regulatory light chain a consists of 161 amino acid residues, while regulatory light chain b consists of 156 amino acid residues. Amino acid substitutions and insertions were found only in the N-terminal regions of the sequences. The structural difference between the two light chains may contribute to the functional difference between myosins having regulatory light chains a and b.
ISSN:0021-924X
1756-2651
DOI:10.1093/oxfordjournals.jbchem.a135089