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FEBS Lett. 1999 Nov 5;460(3):462-6.

Cloning and characterization of B delta, a novel regulatory subunit of protein phosphatase 2A.

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1
Department of Molecular Physiology and Biophysics, Vanderbilt University Medical Center, Nashville, TN 37232, USA.

Abstract

Variable regulatory subunits of protein phosphatase 2A (PP2A) modulate activity, substrate selectivity and subcellular targeting of the enzyme. We have cloned a novel member of the B type regulatory subunit family, B delta, which is most highly related to B alpha. B delta shares with B alpha epitopes previously used to generate subunit-specific antibodies. Like B alpha, but unlike B beta and B gamma which are highly brain-enriched, B delta mRNA and protein expression in tissues is widespread. B delta is a cytosolic subunit of PP2A with a subcellular localization different from B alpha and may therefore target a pool of PP2A holoenzymes to specific substrates.

PMID:
10556517
[Indexed for MEDLINE]
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