Catecholamine-stimulated protein phosphorylation in 3T3-L1 preadipocytes and adipocytes.

Catecholamine-stimulated protein phosphorylation in 3T3-L1 preadipocytes and adipocytes. Research Abstract Details 

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Catecholamine-stimulated protein phosphorylation in 3T3-L1 preadipocytes and adipocytes. Abstract Text:

A Morita,Y Aratani,E Sugimoto,Y Kitagawa,

The endogenous protein phosphorylation stimulated by catecholamines was compared in 3T3-L1 preadipocytes and adipocytes. Phosphorylation of a protein with an approximate molecular weight of 57,000 was stimulated both in preadipocytes and adipocytes of 3T3-L1. Stimulated phosphorylation of four other proteins with approximate molecular weights of 90,000, 62,000, 48,000, and 32,000 was observed only in 3T3-L1 adipocytes. All of these proteins appeared to be localized in the microsomal fraction. Phosphorylation of these proteins was stimulated by norepinephrine, epinephrine, isoproterenol, dibutyryl cyclic AMP, theophylline, or 1-methyl-3-isobutylxanthine, but not by A23187. Among the phosphorylated proteins in 3T3-L1 adipocytes, the 62,000 dalton protein was most evident. Using this protein as a marker, it appeared that epinephrine and norepinephrine were effective in stimulating the phosphorylation at the same concentration range. This result was in clear contrast to the different affinities of these catecholamines for beta-receptors of 3T3-L1 adipocytes reported by Lai, Rosen, and Rubin (J. Biol. Chem. (1982) 257, 6691-6696). The phosphorylation of the 62,000 dalton protein in 3T3-L1 adipocytes was observed 1 min after the addition of norepinephrine, and dephosphorylation was observed within 10 min after the addition of propranolol.

Catecholamine-stimulated protein phosphorylation in 3T3-L1 preadipocytes and adipocytes. Publishing Authors By Initials

A Morita,Y Aratani,E Sugimoto,Y Kitagawa,

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Catecholamine-stimulated protein phosphorylation in 3T3-L1 preadipocytes and adipocytes. Journal Published:

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

Journal: Journal of biochemistry

VOLUME: 95

Page Numbers: 743-50

Journal Abbreviation: J. Biochem.

ISSN: 0021-924X

DAY: 19

MONTH: Mar

YEAR: 1984

Catecholamine-stimulated protein phosphorylation in 3T3-L1 preadipocytes and adipocytes. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 376600

Catecholamine-stimulated protein phosphorylation in 3T3-L1 preadipocytes and adipocytes. Keywords Mesh Terms:

KEYWORDS: Proteins

MESH TERMS: metabolism

Chemical & Substance for Abstract: Catecholamine-stimulated protein phosphorylation in 3T3-L1 preadipocytes and adipocytes. Information

Substance Name: Propranolol

Registry Number: 525-66-6

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Country: JAPAN

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MEDLINETA: J Biochem

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