Extreme heterogeneous composition of the Paramecium caudatum macronuclear genomic DNA between hemoglobin and nucleosome assembly protein-1 genes.
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概要
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The intergenic region between the hemoglobin (hb) and nucleosome assembly protein-1 (nap-1) genes in the Paramecium caudatum macronuclear genome was previously found to be heterogeneously composed. Cloning of this intergenic region from the macronuclear genomic DNA identified four unique DNA fragments of different sizes. Sequencing of the cloned fragments revealed extreme heterogeneity and characteristics of both internal eliminated sequence (IES) and imprecise internal deletion sequences (IIDSs) in the intergenic region. Missing sequences were an AT-rich and direct repeats existed in their boundaries. Southern blotting of the total genomic DNA and polymerase chain reaction (PCR) of the total genomic DNAs indicated that there exist a dozen DNA fragments of different sizes in this intergenic region. It is likely that the heterogeneity found in the P. caudatum macronuclear genome results from the variable removal of an intergenic region.
- Genetics Society of Japanの論文
著者
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Yamauchi K
Graduate School Of Fisheries Sciences Hokkaido University
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Yamauchi K
Hokkaido Univ. Hokkaido Jpn
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Yamauchi Kohei
Graduate School Of Fisheries Sciences Hokkaido University
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Nishiyama Norihito
Department of Biology, Faculty of Science, Shizuoka University
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Yamauchi Kiyoshi
Department of Biology, Faculty of Science, Shizuoka University
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Mikami Kazuyuki
Environmental Education Center, Miyagi University of Education
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Matsuoka Ariki
Department of Biology, School of Medicine, Fukushima Medical University
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Ochiai Takehiko
Department of Biology, School of Medicine, Fukushima Medical University
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Matsuoka Ariki
Department Of Biology Fukushima Medical University
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Ochiai Takehiko
Department Of Biology Fukushima Medical University School Of Medicine
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Yamauchi Kiyoshi
Department Of Bioapplied Chemistry Faculty Of Engineering Osaka City University
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Mikami Kazuyuki
Environmental Education Center Miyagi University Of Education
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Nishiyama Norihito
Department Of Biology And Geoscience Faculty Of Science Shizuoka University
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