• Title/Summary/Keyword: Homologue

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새로운 생분해성 미생물 폴리에스터

  • 윤성철
    • The Microorganisms and Industry
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    • v.18 no.1
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    • pp.47-58
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    • 1992
  • 본 발표에서는 PHA 연구 붐이 일기 시작한 최근80년도 중반 이후의 국내외 여러 학자들의 "New" polyesters의 탐색에 대해 알아보기로 한다. 미생물에 의해 생산된 PHA의 화학구조는 배양시에 넣어준 탄소원의 화학구조에 지배를 받는다. 따라서, 세균별, 탄소원의 homologue별로 어떤 종류의 polyester가 합성되는지를 살펴보기로 한다. 살펴보기로 한다.

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Levels and Patterns of Polychlorinated Dibenzo-p-dioxins and Dibenzofurans in Sediments from Korean Coast

  • Moon Hyo-Bang;Choi Hee-Gu;Kim Sang-Soo;Jeong Seung-Ryul;Lee Pil-Yong
    • Fisheries and Aquatic Sciences
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    • v.4 no.2
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    • pp.51-57
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    • 2001
  • Polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs) were measured in sediment samples from 19 stations in the coastal areas of Korea from February to July 2000. PCDDs and PCDFs were detected in all sediment samples. The concentrations of these con­taminants ranged from 18.2 to 804.0 pg/g dry weight and I-TEQ concentrations varied from 0.1 to 5.5 pg/g dry weight. Examination of homologue groups showed that octachlorinated dibenzo-p-dioxin (OCDD) was predominant congener in Korean coast. This pattern was similar to homologue profiles of marine sediments in which the main source of PCDDs/DFs was derived from the atmospheric deposition of particulate matters generated from various industrial activities. Grain size and total organic carbon (TOC) distribution are one of the important factors governing PCDDs/DFs concentration in this study.

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RTP1, a Rat Homologue of Adenovirus ElA-associated Protein BS69, Interacts with DNA Topoisomerase II

  • Oh, Misook;Rha, Geun-Bae;Yoon, Jeong-Ho;Sunwoo, Yang-Il;Hong, Seung-Hwan;Park, Sang-Dai
    • Animal cells and systems
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    • v.6 no.3
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    • pp.277-282
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    • 2002
  • Topoisomearse II is an essential enzyme in all organisms with several independent roles in DNA metabolism. Recently, it has been demonstrated that the C-terminal region of topoisomerases II is associated with hetero-logous protein-protein interactions in human and yeast. In this study, we identified that RTP1, a rat homologue of EIA binding protein BS69, is another topoisomerae II interacting protein by yeast two-hybrid screening. RTP1 has an E1A-binding domain and a MYND motif, which are known to be required for transcriptional regulation by binding to other proteins and interaction with the leucine zipper motif of topoisomerase II. The physical interaction between RTP1 and topoisomerase ll$\alpha$ was examined by GST pull-down assay in vitro. The expression level of RTP1 peaks in S phase as that of topoisomerase ll$\alpha$. These results suggest that the interaction between topoisomerase ll$\alpha$ and RTP1 might play an important role in regulating the transcription of genes involved in DNA metabolism in higher eukaryotes.

cDNA Sequence of a Novel Immulectin Homologue from the Silkworm, Bombyx mori

  • Kim, Seong-Ryul;Lee, Kwang-Sik;Kim, Iksoo;Kang, Seok-Woo;Nho, Si-Kab;Sohn, Hung-Dae;Jin, Byung-Rae
    • International Journal of Industrial Entomology and Biomaterials
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    • v.6 no.1
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    • pp.99-102
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    • 2003
  • A cDNA of novel immulectin homologue (BmIML), a C-type lectin, was cloned from the silkworm, Bombyx mori. The immulectin cDNA is an open reading frame of 921 bp encoding 307 amino acid residues. The deduced amino acid sequence from the BmIML cDNA contains two C-type carbohydrate recognition domains (CRDs). The BmIML was most similar (61 % protein sequence identity) to the M. sexta immulectin-1, whereas BmIML showed relatively lower identity to the B. mori lipopolysaccharide-binding protein (25% protein sequence identity). These features of BmIML indicate that BmIML is a novel member of C-type lectin superfamily. Northern blot analysis revealed that the BmIML is specifically expressed in the fat body of B. moli larvae.

Cloning and Expression of Alkaline Phosphatase Gene from Schizosaccharomyces pombe

  • Kang, Sung-Won;Cho, Young-Wook;Park, Eun-Hee;Ahn, Ki-Sup;Lim, Chang-Jin
    • BMB Reports
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    • v.34 no.3
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    • pp.262-267
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    • 2001
  • A cDNA coding alkaline phosphatase (AP) homologue was isolated from a cDNA library of Schizosaccharomyces pombe by colony hybridization. The nucleotide sequence of the cloned cDNA appeared to lack the N-terminal coding region. The genomic DNA encoding alkaline phosphatase homologue was isolated from S. pombe chromosomal DNA using PCR. The amplified DNA fragment was ligated into plasmid pRS315 to generate the recombinant plasmid pSW20. The DNA insert was subcloned as two smaller fragments for nucleotide sequencing. The sequence contains 2,789 by and encodes a protein of 532 amino acids with a molecular mass of 58,666 daltons. The S. pombe cells containing plasmid pSW20 showed much higher AP activity compared with the yeast cells with vector only This indicates that the cloned AP gene apparently encodes AP The predicted amino acid sequence of the S. pombe AP shares homology with those of other known APs.

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