DNA-binding properties of FOXP3 transcription factor.
Acta Biochim Biophys Sin (Shanghai)
; 49(9): 792-799, 2017 Sep 01.
Article
em En
| MEDLINE
| ID: mdl-28910978
ABSTRACT
FOXP3, a lineage-specific forkhead (FKH) transcription factor, plays essential roles in the development and function of regulatory T cells. However, the DNA-binding properties of FOXP3 are not well understood. In this study, FOXP3 fragments containing different domains were purified, and their DNA-binding properties were investigated using electrophoretic mobility shift assay and isothermal titration calorimetry (ITC). Both the FKH and leucine-zipper domains were required for optimal DNA binding for FOXP3. FOXP3 protein not only binds with DNA sequences containing one FKH consensus sequence, but also binds with DNA sequences with two direct repeats of consensus sequences separated by three-nucleotides (DRE3). Our results shed lights on the mechanisms by which FOXP3 recognizes cognate DNA elements, and would facilitate further structural and functional studies of FOXP3.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
DNA
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Fatores de Transcrição Forkhead
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Domínios Proteicos
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Conformação de Ácido Nucleico
Tipo de estudo:
Prognostic_studies
Limite:
Humans
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article