Format

Send to

Choose Destination
Cell. 1991 Feb 22;64(4):739-49.

CREM gene: use of alternative DNA-binding domains generates multiple antagonists of cAMP-induced transcription.

Author information

1
Laboratoire de Génétique Moléculaire des Eucaryotes du CNRS, Faculté de Médecine, Strasbourg, France.

Abstract

We isolated a gene from a mouse pituitary cDNA library that encodes a protein highly homologous to nuclear factor CREB, an activator of cAMP-responsive promoter elements (CREs). We demonstrate that while CREB is expressed uniformly in several cell types, this gene, termed CREM, shows cell-specific expression. CREM has a remarkable organization, since down-stream of the stop codon there is a second, out-of-frame DNA-binding domain. Using PCR and RNAase protection analysis, we have identified three mRNA isoforms that appear to be obtained by differential cell-specific splicing. Sequencing of the isoforms demonstrated alternative usage of the two DNA-binding domains. CREM proteins reveal the same efficiency and specificity of binding to CRE sequences as CREB, but in contrast to CREB, CREM acts as a down-regulator of cAMP-induced transcription.

PMID:
1847666
DOI:
10.1016/0092-8674(91)90503-q
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center