Brain-specific expression of the nuclear actin-related protein ArpNalpha and its involvement in mammalian SWI/SNF chromatin remodeling complex.

Abstract:

:Actin-related proteins share significant homology with conventional actins and are classified into subfamilies based on the similarity of their sequences and functions. The Arp4 subfamily of Arps is localized in the nucleus, and a mammalian isoform, ArpNbeta (also known as BAF53), is a component of the chromatin remodeling and histone acetyltransferase complexes. Another isoform identified in humans, ArpNalpha has scarcely been characterized yet. We identified mouse ArpNalpha, and showed that ArpNalpha is more similar between humans and mice than ArpNbeta. No difference was observed between ArpNalpha and beta in subcellular localization and interaction with BRM, which is an ATPase subunit of mammalian SWI/SNF chromatin remodeling complex. However, ArpNalpha was expressed exclusively in the brain and its expression was induced during neural differentiation of P19 mouse embryonic carcinoma cells. ArpNalpha is the first brain-specific component of a chromatin remodeling complex to be identified, suggesting that ArpNalpha has conserved and important roles in the differentiation of neural cells through regulation of chromatin structure.

authors

Kuroda Y,Oma Y,Nishimori K,Ohta T,Harata M

doi

10.1016/s0006-291x(02)02637-2

subject

Has Abstract

pub_date

2002-11-29 00:00:00

pages

328-34

issue

2

eissn

0006-291X

issn

1090-2104

pii

S0006291X02026372

journal_volume

299

pub_type

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