• Title/Summary/Keyword: J gene

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Studies on the Adenosine Deaminase Gene from Nocardioides sp. J-326TK (Nocardioides sp. J-326TK의 Adenosine Deaminase Gene에 관한 연구)

  • 전홍기;백형석;정춘식
    • Journal of Life Science
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    • v.8 no.6
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    • pp.673-680
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    • 1998
  • Adenosine deaminase gene from Nocardioides sp. J-326TK was cloned by polymerase chain reaction using primers (PI, PII and PIII) constructed from the highly conserved amino acid sequences among Escherichia coli, mouse and human. A PCR product of about 800bp, as expected from the sequence of E. coli adenosine deaminase gene, was obtained from Nocardioides sp. J-326TK chromosomal DNA double-digested with EcoRI and Pst I. DNA sequencing of the PCR product after cloning into pT7Blue T-vector shows 99.5% and 98.9% homologies in nucleotide and amino acid sequences, respectively, with the E. coli adenosine deaminase whereas 59.5% and 46.8% homologies with the human adenosine deaminase, indicating the evolutionarily relationship of these organisms.

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Molecular Characterization of a thiJ-like Gene in Chinese Cabbage

  • Oh, Kyung-Jin;Park, Yong-Soon;Lee, Kyung-Ah;Chung, Yong-Je;Cho, Tae-Ju
    • BMB Reports
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    • v.37 no.3
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    • pp.343-350
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    • 2004
  • A cDNA clone for a salicylic acid-induced gene in Chinese cabbage (Brassica rapa subsp. pekinensis) was isolated and characterized. The cabbage gene encoding a protein of 392 amino acids contained a tandem array of two thiJ-like sequences. ThiJ is a thiamin biosynthesis enzyme that catalyzes the phosphorylation of hydroxymethylpyrimidine (HMP) to HMP monophosphate. Although the cabbage gene shows a similarity to bacterial thiJ genes, it also shares a similarity with the human DJ-1, a multifunctional protein that is involved in transcription regulation, male fertility, and parkinsonism. The cabbage thiJ-like gene is strongly induced by salicylic acid and a nonhost pathogen, Pseudomonas syringae pv. tomato, which elicits a hypersensitive response in Chinese cabbage. Treatment of the cabbage leaves with BTH, methyl jasmonate, or ethephon showed that the cabbage thiJ-like gene expression is also strongly induced by BTH, but not by methyl jasmonate or ethylene. This indicates that the cabbage gene is activated via a salicylic acid-dependent signaling pathway. Examination of the tissue-specific expression revealed that the induction of the cabbage gene expression by BTH occurs in the leaf, stem, and floral tissues but not in the root.

Identification of Novel SNPs with Effect on Economic Traits in Uncoupling Protein Gene of Korean Native Chicken

  • Oh, J.D.;Kong, H.S.;Lee, J.H.;Choi, I.S.;Lee, S.J.;Lee, S.G.;Sang, B.D.;Choi, C.H.;Cho, B.W.;Jeon, G.J.;Lee, H.K.
    • Asian-Australasian Journal of Animal Sciences
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    • v.19 no.8
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    • pp.1065-1070
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    • 2006
  • The avian uncoupling protein (avUCP) is a member of the mitochondrial transporter superfamily that uncouples proton entry in the mitochondrial matrix from ATP synthesis. The sequencing analysis method was used to identify nucleotide polymorphisms within the avUCP gene in Korean native chicken (KNC). This study identified ten single nucleotide polymorphisms (SNPs) in the avUCP gene. We analyzed the SNPs of the avUCP gene to investigate whether polymorphism in the gene might be responsible for quantitative variations in economic traits in KNC. Three significant polymorphic sites for economic traits were avUCP C+282T (mean body weight, p<0.05), avUCP C+433T (daily percent lay, p<0.05), and avUCP T+1316C (daily percent lay, p<0.05). The frequency of each SNP was 0.125 (C+282T in avUCP gene exon 1 region), 0.150 (C+433T in avUCP gene intron 1 region), and 0.15 (T+1316C in avUCP gene exon 3 region), respectively. Among the identified SNPs, one pair of SNPs (genotype CC, C+282T and TT, avUCP C+433T) showed the highest daily percent lay (p<0.05) and mean body weight (p<0.05) and the frequency was 0.067. This study of the avUCP gene could be useful for genetic studies of this gene and selection on economic traits for KNC.