Tissue-specific expression of multiple mRNA variants of the mouse estrogen receptor alpha gene.
The isolation of five new mouse estrogen receptor alpha mRNA variants (mERalpha A, B, F1, F2 and H) is described. All of these transcripts are generated by alternative splicing and all encode the 66 kDa ERalpha protein that the previously identified mRNA C variant generates. However, these transcripts differ in their 5' untranslated regions. RT-PCR and S1 nuclease protection assays revealed a tissue- and sex-specific expression pattern of all variants. The C and F mRNA variants are the predominantly expressed mERalpha variants in mouse. The expression of mERalpha H mRNA is restricted to liver, although female mice produce around a five fold higher level of this transcript than males. Our results show that the mERalpha gene is a complex genomic unit in mice that exhibits alternative splicing which is regulated in a tissue-specific manner.
Kos
M
M
European Molecular Biology Laboratory, Meyerhofstrasse 1, D-69117, Heidelberg, Germany.
O'Brien
S
S
Flouriot
G
G
Gannon
F
F
D020121:5' Untranslated Regions / Q000032:analysis / Q000235:genetics*; D017398:Alternative Splicing / Q000235:genetics*; D000818:Animals; D003001:Cloning, Molecular; D047628:Estrogen Receptor alpha; D005260:Female; D020869:Gene Expression Profiling; D014644:Genetic Variation / Q000235:genetics*; D006801:Humans; D008099:Liver / Q000378:metabolism; D008297:Male; D051379:Mice; D008969:Molecular Sequence Data; D009928:Organ Specificity; D011401:Promoter Regions, Genetic / Q000235:genetics; D051381:Rats; D011960:Receptors, Estrogen / Q000737:chemistry / Q000235:genetics*; D016415:Sequence Alignment; D012727:Sex Characteristics
D020121:5' Untranslated Regions; D047628:Estrogen Receptor alpha; D011960:Receptors, Estrogen