Selective conservation of an E‐protein gene promoter during vertebrate evolution

FEBS Letters

Norris, Jeff¹  Shain, Daniel H.¹  Yoo, Jakyoung²  Neuman, Toomas³  Zuber, Mauricio X.¹ 

[1] Department of Biochemistry and Molecular Biology, Colorado State University, Fort Collins, CO 80523, USA;U.S. Department of Agriculture, Agricultural Research Service, Roman L. Hruska U.S. Meat Animal Research Center (MARC), P.O. Box 166, Clay Center, NE 68933-0166, USA;Department of Anatomy and Neurobiology, Colorado State University, Fort Collins, CO 80523, USA

关键词: E-protein;    Promoter;    Vertebrate evolution;    Gene expression;    Mouse;    DNA bending;   

DOI  :  10.1016/S0014-5793(98)01417-3

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

The murine E-protein gene ME1 encodes a non-tissue-specific, helix-loop-helix transcription factor that is associated with morphological development. ME1 gene expression is regulated by a TATA-less promoter that contains multiple Sp1 consensus elements, E-boxes, and a novel transcription initiation site. In this study, we compared DNA homologous to the ME1 promoter from vertebrate species ranging from frog to human. A region of striking sequence similarity was identified in a region corresponding to the ME1 transcription initiation site (ME1 Inr). Within this region, a poly d(A) tract and a 9-bp inverted repeat (5′-GTCCGCCTG) were highly conserved in all species that were examined. Protein complexes that recognized these DNA elements were present among distant vertebrates (frog, chick, monkey and human), and were able to bend the ME1 Inr to a similar extent (∼60°) as the previously described murine MBPα and MBPβ proteins. Collectively, these results suggest that an ME1 Inr-like element and its associated proteins functioned in an ancestral vertebrate more than 350 million years ago.

【 授权许可】

Unknown