Preparation and characterization of the major isotype of parvalbumin from skeletal muscle of the toad (Bufo bufo japonicus).

Preparation and characterization of the major isotype of parvalbumin from skeletal muscle of the toad (Bufo bufo japonicus). Research Abstract Details 

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Preparation and characterization of the major isotype of parvalbumin from skeletal muscle of the toad (Bufo bufo japonicus). Abstract Text:

M Tanokura,K Goto,Y Toyomori,K Yamada,

The major isotype of parvalbumin has been isolated from the skeletal muscle of the toad, Bufo bufo japonicus. Unlike the skeletal muscle of every frog so far examined (Rana esculenta, Rana temporaria, and Rana catesbeiana), which contains two major isotypes of parvalbumins, toad skeletal muscle has been shown to contain only one isotype, but the content of parvalbumin in toad skeletal muscle was similar to the sum of those of the two isotypes in skeletal muscles of frogs. This feature of toad skeletal muscle is advantageous to clarify the physiological role of parvalbumin. The relative molecular mass of toad parvalbumin was estimated to be 12,200 by SDS-polyacrylamide gel electrophoresis. The isoelectric point was determined to be 4.81 by polyacrylamide gel isoelectric focusing. The amino acid composition indicated that toad parvalbumin corresponds to bullfrog (R. catesbeiana) pI 4.97 parvalbumin, showing that toad parvalbumin is genetically an alpha-parvalbumin. It was also revealed by the amino acid composition that toad parvalbumin is distinctly different from any of the parvalbumins from frogs. The ultraviolet spectrum of toad parvalbumin is consistent with its amino acid composition. The ultraviolet difference spectrum of the Ca2+-loaded form vs. the metal-free form indicates that some Phe residues in the toad parvalbumin molecule are affected by a conformational change associated with Ca2+ binding. On electrophoresis in polyacrylamide gel in 14 mM Tris and 90 mM glycine, the metal-free and Mg2+-loaded forms of toad parvalbumin migrated twice as fast as the Ca2+-loaded form.(ABSTRACT TRUNCATED AT 250 WORDS)

Preparation and characterization of the major isotype of parvalbumin from skeletal muscle of the toad (Bufo bufo japonicus). Publishing Authors By Initials

M Tanokura,K Goto,Y Toyomori,K Yamada,

For similar investigative techniques: chemistry, analytical: photometry: spectrophotometry: spectrophotometry, ultraviolet research abstracts see: investigative techniques: chemistry, analytical: photometry: spectrophotometry: spectrophotometry, ultraviolet research

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Preparation and characterization of the major isotype of parvalbumin from skeletal muscle of the toad (Bufo bufo japonicus). Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Journal of biochemistry

VOLUME: 102

Page Numbers: 1133-9

Journal Abbreviation: J. Biochem.

ISSN: 0021-924X

DAY: 19

MONTH: Nov

YEAR: 1987

Preparation and characterization of the major isotype of parvalbumin from skeletal muscle of the toad (Bufo bufo japonicus). Information

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LANGUAGE: eng

NlmUniqueID: 376600

Preparation and characterization of the major isotype of parvalbumin from skeletal muscle of the toad (Bufo bufo japonicus). Keywords Mesh Terms:

KEYWORDS: Spectrophotometry, Ultraviolet

MESH TERMS: analysis

Chemical & Substance for Abstract: Preparation and characterization of the major isotype of parvalbumin from skeletal muscle of the toad (Bufo bufo japonicus). Information

Substance Name: Calcium

Registry Number: 7440-70-2

Grant and Affiliation Information for Preparation and characterization of the major isotype of parvalbumin from skeletal muscle of the toad (Bufo bufo japonicus).

AFFILIATION: Department of Physiology, Medical College of Oita.

Country: JAPAN

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MEDLINETA: J Biochem

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