首页> 外文OA文献 >The nontranscribed chicken calmodulin pseudogene cross-hybridizes with mRNA from the slow-muscle troponin C gene.
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The nontranscribed chicken calmodulin pseudogene cross-hybridizes with mRNA from the slow-muscle troponin C gene.

机译:未转录的鸡钙调蛋白假基因与慢肌肌钙蛋白C基因的mRNA交叉杂交。

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摘要

A chicken calmodulin pseudogene with no introns was previously shown to hybridize under stringent conditions with an mRNA species present in skeletal and cardiac muscles, yet it would not hybridize to calmodulin mRNA (J. P. Stein, R. P. Munjaal, L. Lagace', E. C. Lai, B. W. O'Malley, and A. R. Means, Proc. Natl. Acad. Sci. USA 80:6485-6489, 1983). Using the pseudogene as a probe, we isolated a full-length cDNA corresponding to this mRNA from a chicken breast muscle library and showed by sequence analysis that it encodes slow-muscle troponin C and not the pseudogene product. Hybridization between the calmodulin pseudogene and slow-muscle troponin C cDNA is due to a short region of high homology in those nucleotides that encode helices B and C of troponin C and calmodulin. Genomic Southern analysis showed the calmodulin pseudogene and the gene for slow-muscle troponin C to exist as distinct single copies.
机译:先前显示无内含子的鸡钙调蛋白假基因可在严格条件下与骨骼肌和心肌中存在的mRNA物种杂交,但不会与钙调蛋白mRNA杂交(JP Stein,RP Munjaal,L.Lagace',EC Lai,BW O'Malley和AR Means,美国国家科学院院刊80:6485-6489,1983)。使用假基因作为探针,我们从鸡胸肌文库中分离出了与该mRNA相对应的全长cDNA,并通过序列分析显示其编码慢肌钙蛋白C而不是假基因产物。钙调蛋白假基因和慢肌肌钙蛋白C cDNA之间的杂交是由于编码肌钙蛋白C和钙调蛋白的螺旋B和C的那些核苷酸中具有高度同源性的短区域引起的。 Southern基因组分析显示钙调蛋白假基因和慢肌肌钙蛋白C基因以不同的单拷贝形式存在。

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