首页> 外文期刊>Cellular Signalling >Genomic organisation of the human cyclic AMP-specific phosphodiesterase PDE4C gene and its chromosomal localisation to 19p13.1, between RAB3A and JUND.
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Genomic organisation of the human cyclic AMP-specific phosphodiesterase PDE4C gene and its chromosomal localisation to 19p13.1, between RAB3A and JUND.

机译:人类环状AMP特异性磷酸二酯酶PDE4C基因的基因组组织及其在RAB3A和JUND之间的染色体定位,位于19p13.1。

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摘要

PDE4C is one of four mammalian genes that encode multiple PDE4 cyclic AMP-specific phosphodiesterase isoforms that are inhibited by rolipram. Fluorescent in situ hybridisation localised PDE4C to the p13.1 region of human chromosome 19. Overlapping cosmid clones spanning the human PDE4C gene were identified and characterised. Analysis of this locus indicated that the PDE4C gene spans at least 38 kb, consists of at least 18 exons, and contains the marker D19S212 within an intron. Comparison of published human PDE4C cDNA sequences with those of the genomic DNA identified four alternatively spliced exons and the possibility that the PDE4C locus contains at least three alternative promoters. PDE4C-containing cosmids also contained the genes for the growth regulatory transcription factor, JUND, and the mini guanine nucleotide regulatory protein, RAB3A. The RAB3A gene was shown to consist of 5 exons spanning 7.9 kb, while the JUND gene was found to contain no introns. Analysis of cosmids containing PDE4C, JUND, and RAB3A showed that 27 kb separate JUND and PDE4C, while only 3.7 kb separate PDE4C and RAB3A. The three genes share the same orientation of transcription and are arranged in the order cen- 5'- JUND-PDE4C-RAB3A-3'-tel.
机译:PDE4C是四个哺乳动物基因之一,其编码受咯利普兰抑制的多种PDE4环状AMP特异性磷酸二酯酶同工型。荧光原位杂交将PDE4C定位于人染色体19的p13.1区。鉴定并鉴定了跨越人PDE4C基因的重叠粘粒克隆。该基因座的分析表明,PDE4C基因跨至少38 kb,由至少18个外显子组成,并在内含子中包含标记D19S212。比较已发表的人PDE4C cDNA序列与基因组DNA的序列,可确定四个剪接的外显子,以及PDE4C基因座含有至少三个替代启动子的可能性。含有PDE4C的粘粒还含有生长调节转录因子JUND和微型鸟嘌呤核苷酸调节蛋白RAB3A的基因。结果表明,RAB3A基因由5个跨度为7.9 kb的外显子组成,而JUND基因不含内含子。对含有PDE4C,JUND和RAB3A的粘粒的分析表明,分别有27 kb的JUND和PDE4C分开,而只有3.7 kb的PDE4C和RAB3A分开。这三个基因共享相同的转录方向,并以cen-5'- JUND-PDE4C-RAB3A-3'-tel的顺序排列。

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