Filament-forming domain of carp dorsal myosin rod.

Filament-forming domain of carp dorsal myosin rod. Research Abstract Details 

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Filament-forming domain of carp dorsal myosin rod. Abstract Text:

S Kato,K Konno,

Substructure of the myosin rod and its correlation to the filament formation were investigated by using fish myosin rod. It was found that fish rod contains a unique chymotrypsin susceptible site, 40 kDa from the COOH-terminus or 20 kDa downstream from the subfragment-2/light meromyosin junction (S-2/LMM junction). Cleavage at this new site produced subfragment-2 possessing 95 kDa subunit (95k S-2) and light meromyosin possessing 40 kDa subunit (40k LMM). The latter is the shortest unit ever reported to exhibit filament formation. Moreover, the 40k LMM was able to form filaments independently of the presence of Mg2+, while filament formation of rod and ordinary LMM (70k LMM) was promoted by Mg2+ addition. These results indicated that the Mg2+ binding sites are present within the NH2-terminal 20 kDa region of the 70k LMM. We concluded that the COOH-terminal 40 kDa portion of rod is responsible for the self-assembly ability of myosin, while the NH2-terminal 20 kDa region of the 70k LMM is the regulatory domain for thick filament formation through Mg(2+)-binding.

Filament-forming domain of carp dorsal myosin rod. Publishing Authors By Initials

S Kato,K Konno,

For similar investigative techniques: chemistry, analytical: photometry: luminescent measurements: fluorometry: spectrometry, fluorescence research abstracts see: investigative techniques: chemistry, analytical: photometry: luminescent measurements: fluorometry: spectrometry, fluorescence research

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Filament-forming domain of carp dorsal myosin rod. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Journal of biochemistry

VOLUME: 113

Page Numbers: 43-7

Journal Abbreviation: J. Biochem.

ISSN: 0021-924X

DAY: 19

MONTH: Jan

YEAR: 1993

Filament-forming domain of carp dorsal myosin rod. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 376600

Filament-forming domain of carp dorsal myosin rod. Keywords Mesh Terms:

KEYWORDS: Spectrometry, Fluorescence

MESH TERMS: ultrastructure

Chemical & Substance for Abstract: Filament-forming domain of carp dorsal myosin rod. Information

Substance Name: Chymotrypsin

Registry Number: EC 3.4.21.1

Grant and Affiliation Information for Filament-forming domain of carp dorsal myosin rod.

AFFILIATION: Department of Food Science, Faculty of Fisheries, Hokkaido University, Hakodate.

Country: JAPAN

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MEDLINETA: J Biochem

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