Roles of PSF Protein and VL30 RNA in Reversible Gene Regulation

Overview

Journal Proc Natl Acad Sci U S A

Specialty Science

Date 2005 Aug 5

PMID 16079199

Citations 44

Authors

Xu Song

Ying Sun

Alan Garen

Affiliations

Soon will be listed here.

Abstract

The mammalian protein PSF contains a DNA-binding domain (DBD) that coordinately represses multiple oncogenic genes in human cell lines, indicating a role for PSF as a human tumor-suppressor protein. PSF also contains two RNA-binding domains (RBD) that form a complex with a noncoding VL30 retroelement RNA, releasing PSF from a gene and reversing repression. Thus, the DBD and RBD in PSF are linked by a mechanism of reversible gene regulation involving a noncoding RNA. This mechanism also could apply to other regulatory proteins that contain both DBD and RBD. The mouse genome has multiple copies of VL30 retroelements that are developmentally regulated, and mouse cells contain VL30 RNAs that have normal and pathological roles in gene regulation. Human chromosome 11 has a VL30 retroelement, and a VL30 EST was identified in human blastocyst cells, indicating that the PSF-VL30 RNA regulatory mechanism also could function in human cells.

Citing Articles

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