Human creatine kinase-B complementary DNA. Nucleotide sequence, gene expression in lung cancer, and chromosomal assignment to two distinct loci.

Human creatine kinase-B complementary DNA. Nucleotide sequence, gene expression in lung cancer, and chromosomal assignment to two distinct loci.
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人肌酸激酶-B 互补 DNA。

DOI:
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发表时间:
1987
影响因子:
15.9
通讯作者:
E. Sausville
E. Sausville
中科院分区:
医学1区
文献类型:
--
作者:
F. Kaye;O. McBride;J. Battey;A. Gazdar;E. Sausville

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利用小细胞肺癌(SCLC)基因文库,获得了肌酸激酶-B(CK-B)基因的克隆,并测定了该基因编码蛋白和3‘非翻译区(3’UT)的核苷酸序列。人的翻译蛋白全长381个残基,与兔CK-B的氨基酸同源性大于98%。我们已经证明,包含蛋白质编码区的核酸探针也可以与CK-M序列杂交,而来自3‘UT区的探针是CK-B特异性的。当B-同工酶特定序列与Eco RI切割的基因组DNA杂交时,检测到两个独立的限制性片段多态。我们随后将这两个CK-B同源序列定位于染色体14q32和16。最后,我们发现在小细胞肺癌中CK-B水平的增加并不伴随着基因扩增或重排,但反映了CK-B特异性mRNA的显著增强,这在迄今所检测的非小细胞肺癌株系中是没有的。
Using a small cell lung cancer (SCLC) cDNA library, we obtained clones for the creatine kinase-B (CK-B) gene and determined the nucleotide sequence for the protein coding and 3' untranslated region (3' UT). The human translated protein spans 381 residues and the amino acid homology with rabbit CK-B is greater than 98%. We have demonstrated that a nucleic acid probe encompassing the protein coding region will also hybridize to CK-M sequences while a probe derived from the 3' UT region is CK-B specific. When a B-isoenzyme specific sequence is hybridized to Eco RI cut genomic DNA, two independent restriction fragment polymorphisms are detected. We have subsequently localized these two CK-B homologous sequences to chromosomes 14q32 and 16. Finally, we show that increased levels of CK-B seen in SCLC are not accompanied by gene amplification or rearrangement, but reflect a greatly enhanced level of CK-B specific mRNA that is not seen in non-SCLC lines thus far examined.
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DOI: --
发表时间: 1984
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影响因子: --
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影响因子: --
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