Fluorometric studies on the light chains of skeletal muscle myosin. III. Effect of Ca2+ on the reactivity of two SH groups of DTNB light chain in myosin and in the isolated state.

Fluorometric studies on the light chains of skeletal muscle myosin. III. Effect of Ca2+ on the reactivity of two SH groups of DTNB light chain in myosin and in the isolated state. Research Abstract Details 

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Fluorometric studies on the light chains of skeletal muscle myosin. III. Effect of Ca2+ on the reactivity of two SH groups of DTNB light chain in myosin and in the isolated state. Abstract Text:

K Yamamoto,R Honjo,T Sekine,

We studied the effect of Ca2+ on the reactivities of two SH groups of DTNB light chain (Cys 128 and Cys 157) using a fluorogenic thiol reagent. It was found that a Ca2+-induced change in reactivity occurred only with Cys 128 when the light chain was in an isolated state, whereas it occurred with both Cys 128 and Cys 157 when the light chain was incorporated in myosin. These results indicate that the Ca2+-induced change in the conformation of DTNB light chain in the isolated state was different from that of the light chain in myosin. It may therefore be difficult to relate the Ca2+-induced conformational change observed in the isolated DTNB light chain to the molecular mechanism of myosin-linked Ca2+ regulation.

Fluorometric studies on the light chains of skeletal muscle myosin. III. Effect of Ca2+ on the reactivity of two SH groups of DTNB light chain in myosin and in the isolated state. Publishing Authors By Initials

K Yamamoto,R Honjo,T Sekine,

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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Fluorometric studies on the light chains of skeletal muscle myosin. III. Effect of Ca2+ on the reactivity of two SH groups of DTNB light chain in myosin and in the isolated state. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Journal of biochemistry

VOLUME: 87

Page Numbers: 213-7

Journal Abbreviation: J. Biochem.

ISSN: 0021-924X

DAY: 19

MONTH: Jan

YEAR: 1980

Fluorometric studies on the light chains of skeletal muscle myosin. III. Effect of Ca2+ on the reactivity of two SH groups of DTNB light chain in myosin and in the isolated state. Information

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LANGUAGE: eng

NlmUniqueID: 376600

Fluorometric studies on the light chains of skeletal muscle myosin. III. Effect of Ca2+ on the reactivity of two SH groups of DTNB light chain in myosin and in the isolated state. Keywords Mesh Terms:

KEYWORDS: Spectrometry, Fluorescence

MESH TERMS: analysis

Chemical & Substance for Abstract: Fluorometric studies on the light chains of skeletal muscle myosin. III. Effect of Ca2+ on the reactivity of two SH groups of DTNB light chain in myosin and in the isolated state. Information

Substance Name: Myosins

Registry Number: EC 3.6.1.4

Grant and Affiliation Information for Fluorometric studies on the light chains of skeletal muscle myosin. III. Effect of Ca2+ on the reactivity of two SH groups of DTNB light chain in myosin and in the isolated state.

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Country: JAPAN

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MEDLINETA: J Biochem

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