• Title/Summary/Keyword: complementation analysis

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The Effects of Fashion Involvement on Self-Satisfaction by Conspicuous Consumption Tendency Groups (과시소비성향집단별 패션관여가 자기만족도에 미치는 영향)

  • Park, Hyun-Ju;Park, Sook-Hyun
    • Journal of the Korean Society of Clothing and Textiles
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    • v.36 no.11
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    • pp.1162-1173
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    • 2012
  • This study classifies conspicuous consumption groups and the difference of fashion involvement and selfsatisfaction by each group. It also examined the effect of fashion involvement on self-satisfaction by each group. A questionnaire method was used for the study method and the subjects of the study were females in their 20s-50s. A total of 580 sets of questionnaires were distributed and 554 sets were used for the final analysis. Data were analyzed by factor analysis, t-test, ANOVA, factor analysis, cluster analysis, Cronbach's alpha coefficients, and multiple regression analysis. The results of this study were as follows: First, this study classified 4 groups of active conspicuous consumption, the group of passive conspicuous consumption, the group of syntonic conspicuous consumption and the group pursuing individuality & frugal consumption. Second, as a result of the examination of the impact of fashion involvement for each group with a propensity for conspicuous consumption on their self-satisfaction, it was found that the sex appeal of fashion involvement had no significant impact on the economic satisfaction in the group of active conspicuous consumption, and had no significant impact on all elements of self-satisfaction in the group of passive conspicuous consumption. It was also found that social symbolism had a negative impact on satisfaction with looks in the group of syntonic conspicuous consumption, and the physical complementation and directions of looks had a negative impact on satisfaction with living, the social symbolism on satisfaction with looks and the syntone on satisfaction with looks in the group of pursuing individuality & frugal consumption.

sanN Encoding a Dehydrogenase is Essential for Nikkomycin Biosynthesis in Streptomyces ansochromogenes

  • Ling, Hong-Bo;Wang, Guo-Jun;Li, Jin-E;Tan, Hua-Rong
    • Journal of Microbiology and Biotechnology
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    • v.18 no.3
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    • pp.397-403
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    • 2008
  • Nikkomycins are a group of peptidyl nucleoside antibiotics with potent fungicidal, insecticidal, and acaricidal activities. sanN was cloned from the partial genomic library of Streptomyces ansochromogenes 7100. Gene disruption and complementation analysis demonstrated that sanN is essential for nikkomycin biosynthesis in S. ansochromogenes. Primer extension assay indicated that sanN is transcribed from two promoters (sanN-P1 and sanN-P2), and sanN-P2 plays a more important role in nikkomycin biosynthesis. Purified recombinant SanN acts as a dehydrogenase to convert benzoate-CoA to benzaldehyde in a random-order mechanism in vitro, with respective $K_{cat}/K_m$$ values of $3.8mM^{-1}s^{-1}\;and\;12.0mM^{-1}s^{-1}$ toward benzoate-CoA and NADH, suggesting that SanN catalyzes the formation of picolinaldehyde during biosynthesis of nikkomycin X and Z components in the wild-type stain. These data would facilitate us to understand the biosynthetic pathway of nikkomycins and to consider the combinatorial synthesis of novel antibiotic derivatives.

Virus Resistant and Susceptible Transgenic Nicotiana benthamiana Plants Expressing Coat Protein Gene of Zucchini green mottle mosaic virus for LMO Safety Assessment

  • Kim, Min-Jea;Choi, Sun-Hee;Kim, Tae-Sung;Park, Min-Hye;Lim, Hee-Rae;Oh, Kyung-Hee;Kim, Tae-San;Lee, Min-Hyo;Ryu, Ki-Hyun
    • The Plant Pathology Journal
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    • v.20 no.3
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    • pp.206-211
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    • 2004
  • Transgenic Nicotiana benthamiana plants harboring coat protein (CP) gene of Zucchini green mottle mosaic virus (ZGMMV) were generated for virus-resistant screening and complementation analysis of related viruses for environmental safety assessment (SA) of living modified organism (LMO) purposes. Transformation of leaf disc of N.benthamiana was performed by using Agrobacterium-mediated method and the pZGC-PPGA748 containing the ZGMMV CP and NPTII genes. Two kinds of transgenic homozygous groups, virus-resistant and virus-susceptible N.benthamiana lines, were obtained by screening of challenging homologous virus for Tl generations. These two pathologically different lines can be useful for host-virus interactions and LMO environmental SA.

Validation of Numerical Wind Simulation by Offshore Wind Extraction from Satellite Images (위성영상 해상풍 축출에 의한 수치바람모의 검증)

  • Kim, Hyun-Goo;Hwang, Hyo-Jeong;Lee, Hwa-Woon;Kim, Dong-Hyuk;Kim, Deok-Jin
    • Journal of Environmental Science International
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    • v.18 no.8
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    • pp.847-855
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    • 2009
  • As a part of effort to establish an offshore wind resource assessment system of the Korean Peninsula, a numeric wind simulation using mesoscale climate model MM5 and a spatial distribution of offshore wind extracted from SAR remote-sensing satellite image is compared and analyzed. According to the analyzed results, the numeric wind simulation is found to have wind speed over predication tendency at the coastal sea area. Therefore, it is determined that a high-resolution wind simulation is required for complicated coastal landforms. The two methods are verified as useful ways to identify the spatial distribution of offshore wind by mutual complementation and if the meteor-statistical comparative analysis is performed in the future using adequate number of satellite images, it is expected to derive a general methodology enabling systematic validation and correction of the numeric wind simulation.

Characterization of Excision Repair Genes Related to Damaged DNA Repair from Eukaryotic Cells

  • Choi, In-Soon;Jin, Yong-Hwan;Park, Sang-Dai
    • Environmental Mutagens and Carcinogens
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    • v.17 no.1
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    • pp.1-6
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    • 1997
  • The RAD4 gene of Saccharomyces cerevisiae is essential for the incision step of UV-induced excision repair. A yeast RAD4 gene has been previously isolated by functional complementation. In order to identify the RAD4 homologous gene from fungus Coprinus cinereus, we have constructed cosmid libraries from electrophoretically separated chromosomes of the C. cinereus. The 13 C. cinereus chromosomes were resolved by pulse-field gel electrophoresis, hybridized with S. cerevisiae RAD4 DNA, and then isolated homologous C. cinereus chromosome. The insert DNA of the RAD4 homolog was contained 3.2 kb. Here, we report the partial cloning and characterization of fungus C. cinereus homolog of yeast RAD4 gene. Southern blot analysis confirmed that C. cinereus contains the sequence homologous DNA to RAD4 gene and this gene exists as a single copy in C. cinereus genome. When total RNA isolated from C. cinereus cells was hybridized with the 1.2 kb PvuII DNA fragment of the S. cerevisiae RAD4 gene, a 2.5 kb of transcript was detected. The level of the transcript did not increase upon UV-irradiation, suggesting that the RAD4 homologous gene in C. cinereus is not UV-inducible.

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Cloning of the Alkaline Phosphatase Gene from Kluyveromyces fragilis

  • Kim, Jong-Guk;Hwang, Seon-Kap;Kwon, Kaeg-Kyu;Nam, Joo-Hyun;Hong, Soon-Duck;Seu, Jung-Hwn
    • Journal of Microbiology and Biotechnology
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    • v.2 no.4
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    • pp.237-242
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    • 1992
  • In order to clone the gene coding for alkaline phosphatase in the yeast Kluyveromyces fragilis, a genomic library was constructed using the yeast-E. coli shuttle vector pHN114 as a cloning vector. From the genomic library, a clone carrying the gene was isolated and the plasmid was designated as pSKH101. A restriction enzyme map was made using this plasmid. Subcloning experiments and complementation studies showed that alkaline phosphatase was active only in the original 3.1 kb insert. Southern hybridization analysis confirmed that the cloned DNA fragment was derived from K. fragilis genomic DNA. Using a minicell experiment, the product of the cloned gene was identified as a protein with a molecular weight of 63 KDa. A 0.6 kb HindIII fragment, which showed promoter activity, was isolated using the E. coli promoter-probe vector pKO-1.

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Molecular Characterization of AceB, a Gene Encoding Malate Synthase in Corynebacterium glutamicum

  • Lee, Heung-Shick;Anthony J. Sinskey
    • Journal of Microbiology and Biotechnology
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    • v.4 no.4
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    • pp.256-263
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    • 1994
  • The aceB gene, encoding for malate synthase, one of the key enzymes of glyoxylate bypass, was isolated from a pMT1-based Corynebacterium glutamicum gene library via complementation of an Escherichia coli aceB mutant on an acetate minimal medium. The aceB gene was closely linked to aceA, separated by 598 base pairs, and transcribed in divergent direction. The aceB expressed a protein product of Mr 83, 000 in Corynebacterium glutamicum which was unusually large compared with those of other malate synthases. A DNA-sequence analysis of the cloned DNA identified an open-reading frame of 2, 217 base pairs which encodes a protein with the molecular weight of 82, 311 comprising 739 aminoo acids. The putative protein product showed only limited amino acid-sequence homology to its counteliparts in other organisms. The N-terminal region of the protein, which shows no apparent homology with the known sequences of other malate synthases, appeared to be responsible for the protein s unusually large size. A potential calciumbinding domain of EF-hand structure found among eukaryotes was detected in the N-terminal region of the deduced protein.

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A Case of Rhizomelic Chondrodysplasia Punctata Type I (Rhizomelic Chondrodysplasia Punctata I형 1례)

  • Kim, Dal Hyun;Kwon, Young Se;Jun, Yong Hoon;Hong, Young Jin;Son, Byoung Kwan;Yoon, Hye Ran
    • Clinical and Experimental Pediatrics
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    • v.45 no.12
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    • pp.1585-1590
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    • 2002
  • Rhizomelic chondrodysplasia punctata(RCDP) is a rare autosomal recessive disorder clinically characterized by symmetrical shortening of the proximal limbs, contractures of joints, a typical dysmorphic face, cataracts, and itchyosis. Patients with RCDP can be subdivided into three subgroups based on biochemical analysis and complementation studies. RCDP type I results from mutations in the PEX7 gene encoding the peroxisomal targeting signal type II(PST2) receptors and presents with both a defect in plasmalogen biosynthesis and phytanic acid oxidation. RCDP type II is deficient in the activity of dihydroxyacetonephosphate acyltransferase(DHAP-AT). RCDP type III is deficient in alkyl-dihydroxyacetonephosphate synthase(alkyl-DHAP). We report a case of RCDP type I which was confirmed with biochemical study, fibroblast culture, and gene study.

Identification of a Cytochrome P450 Hydroxylase Gene Involved in Rifamycin Biosynthesis by Amycolatopsis mediterranei S699

  • Lee, Sang-Kil;Choi, Cha-Yong;Ahn, Jong-Seog;Cho, Jae-Yong;Park, Cheon-Seok;Yoon, Yeo-Joon
    • Journal of Microbiology and Biotechnology
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    • v.14 no.2
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    • pp.356-365
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    • 2004
  • In analyzing the region of the Amycolatopsis mediterranei S699 chromosome responsible for the biosynthesis of the ansamycin antibiotic rifamycin, we identified a gene, designated orj0, which is located immediately upstream of the rifamycin polyketide synthase (PKS). Orj0 encodes a protein, on the basis of sequence-comparative analysis, that is similar to several cytochrome P450 monooxygenases from different sources. The rifamycin producer, A. mediterranei, predominantly produces rifamycin B from its macrocyclic intermediate, proansamycin X, through dehydrogenation and hydroxylation steps. However, an A. mediterranei strain, deleted in orj0 by gene replacement, no longer produced rifamycin B. Furthermore, a versatile replicative vector in A. mediterranei was constructed and rifamycin B production was restored in a complementation experiment of orj0 using this novel vector. These consecutive results verified that the arf0 protein, which is a P450 hydroxylase, is required for the production of rifamycin B in A. mediterranei.

Characterization of the rfaD Gene Region of Bradyrhizobium japonicum 61A101C

  • Noh, Jae-Sang;Kim, Dong-Hyun;Oh, Eun-Taex;So, Jae-Seong
    • Journal of Microbiology and Biotechnology
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    • v.12 no.5
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    • pp.826-828
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    • 2002
  • In our previous studies, we have cloned and characterized a gene region from Bradyrhizobium japonicum ,which is involved in the synthesis of lipopolysaccharide (LPS). In this study, we have expanded the sequence analysis of the region and found an additional open reading frame (orf), which appeared to be divergently transcribed from the rfaF gene. Sequence alignment of the orf revealed a significant similarity with rfaD genes of Salmonella typhimurium , Escherichia coli, and Neisseria gonorrhoeae. These genes encode a heptose-6-epimerase, which catalyzes the interconversion of ADP -D -glycerol-D-manno-heptose to ADP-L-glycero-D-manno-heptose. This divergent organization of the rfaF and rfaD genes is different from that of other Gram-negative bacteria where two genes form an operon. A rfaD- mutant of E. coli was successfully transformed with plasmid constructs containing the rfaD gene of B. japonicum. Novobiocin sensitivity test showed that the rfaD gene from B. japonicum could complement the rfaD mutation in E. coli, which confirms the functionality of the cloned B. japonicum gene.