GSBS Student Publications

Title

The homeodomain transcription factor CDP/cut interacts with the cell cycle regulatory element of histone H4 genes packaged into nucleosomes

Publication Date

1999-10-26

UMMS Affiliation

Graduate School of Biomedical Sciences; Department of Cell Biology

Document Type

Article

Disciplines

Life Sciences | Medicine and Health Sciences

Abstract

The homeodomain transcription factor CDP/cut contains four separate DNA binding domains and interacts with large segments of DNA. Thus, CDP/cut has the potential to function as an architectural protein and perhaps to support modifications in chromatin structure and nucleosomal organization. To begin to examine the ability of CDP/cut to interact with chromatin, we analyzed binding of CDP/cut to the histone H4 gene promoter (-90 to +75) reconstituted into nucleosome cores. The -90 to +75 region encompasses the cell cycle regulatory element (Site II) that controls histone H4 gene transcription, a CDP/cut binding site and a nuclease hypersensitive region. Using electrophoretic mobility shift assays and DNase I footprinting experiments, we show that CDP/cut specifically interacts with its recognition motif in a nucleosomal context without displacing the nucleosome core. The competency of CDP/cut to interact with nucleosomes suggests that this transcription factor may facilitate chromatin remodeling in response to cell cycle regulatory and/or developmental cues.

Source

Mol Biol Rep. 1999 Aug;26(3):185-94.

Journal/Book/Conference Title

Molecular biology reports

Related Resources

Link to article in PubMed

PubMed ID

10532314

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