First Author | Charest NJ | Year | 1991 |
Journal | Mol Endocrinol | Volume | 5 |
Issue | 4 | Pages | 573-81 |
PubMed ID | 1681426 | Mgi Jnum | J:712 |
Mgi Id | MGI:49246 | Doi | 10.1210/mend-5-4-573 |
Citation | Charest NJ, et al. (1991) A frameshift mutation destabilizes androgen receptor messenger RNA in the Tfm mouse. Mol Endocrinol 5(4):573-81 |
abstractText | A composite mouse androgen receptor DNA sequence was obtained by amplifying genomic DNA or cDNA using the polymerase chain reaction. The open reading frame was 2,697 basepairs, encoding a polypeptide of 899 amino acids (98,204 mol wt). Amino acid sequence comparisons indicated that the mouse androgen receptor (AR) is 97% homologous with rat AR and 83% with human AR. The amino acid sequences of the three receptors are identical within the DNA- and steroid-binding domains. Northern blot analysis revealed the predominant mouse AR mRNA to be 10 kilobases (kb). A 1.7-kb mRNA species was detected in mouse kidney using a cDNA probe containing only 5' untranslated AR sequence. Lack of hybridization with AR-coding sequence probes suggested that the 1.7-kb mRNA was not a truncated form of AR mRNA. Sequencing of genomic DNA isolated from testicular feminized (Tfm) mice revealed a single base deletion in the N-terminal domain, resulting in a frameshift mutation. Cycloheximide treatment caused a dramatic increase in AR mRNA in kidneys of Tfm mice, but not wild-type mice, suggesting that the Tfm mutation results in an unstable AR mRNA. |