Expression of transcriptional repressor NC2alpha during Xenopus early embryogenesis.
J Biochem Mol Biol Biophys
; 6(4): 273-7, 2002 Aug.
Article
em En
| MEDLINE
| ID: mdl-12186744
ABSTRACT
To study the mechanisms behind the suppression of gene expression in the early phase of Xenopus development (cleavage stage), we conducted in silico cloning of the Xenopus transcriptional repressor NC2alpha. A search of the GenBank EST database using human NC2alpha as a probe identified Xenopus mitotic phosphoprotein 30 (xMP30) as a prime candidate for Xenopus NC2alpha (xNC2alpha). Full-length cDNA sequencing showed that xNC2alpha/xMP30 had a 68.9% identity at the amino acid level with its human counterpart. Northern blotting showed that xNC2alpha existed abundantly as a maternal mRNA. After the fertilization, the expression of xNC2alpha rapidly increased and reached a maximum 3 h before midblastula transition (MBT). Then its expression gradually decreased toward the early neurula stage. The expression profile of xNC2alpha mRNA is compatible with that of xNC2beta, which is the other component of the Xenopus NC2 transcriptional repressor.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fosfoproteínas
/
Fatores de Transcrição
/
Proteínas de Xenopus
/
Embrião não Mamífero
Tipo de estudo:
Prognostic_studies
Limite:
Animals
/
Humans
Idioma:
En
Revista:
J Biochem Mol Biol Biophys
Ano de publicação:
2002
Tipo de documento:
Article