• Title/Summary/Keyword: HindIII

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Isolation and Partial Characterization of Bacteriophage from Oyster (생굴로부터 bacteriophage의 분리 및 부분특성)

  • 김영희
    • Journal of Environmental Science International
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    • v.5 no.5
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    • pp.605-610
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    • 1996
  • The bacteriophage from the fresh oyster, Crassostrea Virginica which is specific to the marine bacterium was isolated and characterized. Among the foci different vibrio species and the five different serotypes of Vibrio parahaemolyticus host strains tested, only two strains of the parahaemolyticus possessing K17, K52 antigens were highly sensitive to the phage. The size of the isolated plaque was 0.4mm and the electron microscopic head size of the isolated phage was about 67 nm long and 83 nm wide. PFU/ml was 1.25$\times$ $10^{11}$. The phase was sensitive to chloroform but resistant to acetone or methanol. The assay of the isolated phase nucleic acid was deoxyribonucleic acid. The restriction enzyme pattern showed 14 fragment from Hind III and 4 fragments from Eco R I. Two different antigenic groups showed-similar restriction enzyme patterns.

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Linkage of the Kanamycin Resistance Gene with the Streptothricin Resistance Gene in Staphylococcus aureus SA2

  • Shin, Chul Kyo;Sung Hwan Im;Woo Koo Kim;Kyung Bo Moon
    • Journal of Microbiology and Biotechnology
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    • v.6 no.3
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    • pp.219-220
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    • 1996
  • The pKH2 isolated from the multidrug-resistant Staphylococcus aureus SA2 is a 40.98-kb plasmid and mediates resistance to ampicillin, clindamycin, erythromycin, kanamycin, and streptomycin. The 3.4-kb HindIII fragment conferring kanamycin resistance was cloned from the pKH2 into pBluescriptII $KS^+$ and partial sequence determination of that fragment was carried out. Sequence analysis revealed that the kanamycin resistance gene which encoded aminoglycoside 3'-phosphotransferase was linked to the streptothricin resistance gene. But a nonsense mutation was found in the streptothricin resistance gene and this mutation resulted in a truncated protein of streptothricin acetyltransferase. Homology comparison with nucleotide sequence databases revealed that the 3.4-kb HindIII fragment of pKH2 had been derived not from S. aureus but from Gram-negative Campylobacter coli.

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Cloning and Characterization of a Gene Encoding 22 kDa Functional Protein of Bacteriophage MB78

  • Gupta, Lalita;Chakravorty, Maharani
    • BMB Reports
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    • v.38 no.2
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    • pp.161-166
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    • 2005
  • Functional protein of MB78 bacteriophage having apparent molecular weight of 22 kDa is expressed from 1.7 kb HindIII G fragment. The nucleotide sequence of this fragment showed two open reading frames of 222 and 196 codons in tail-to-tail orientation separated by a 62-nucleotide intercistronic region. The ORF of 22 kDa protein is present in opposite orientation, i.e. in the complementary strand, preceded by a strong ribosomal binding site and a promoter sequence. Another ORF started from the beginning of the fragment whose promoter region and translational start site lies in the 0.45 kb HincII U fragment which is located next to the HindIII G fragment, that has the sequence for DNA bending. 3' end of the fragment has high sequence homology to the EaA and EaI proteins of bacteriophage P22, a close relative of MB78 phage.

Molecular Cloning of $\beta$-Galactosidase from Bacillus subtilis HP-4

  • Kim, Jeong-Ho;Lee, Jae-Chang;Huh, Jeong-Won;Chung, Ki-Chul
    • Journal of Microbiology and Biotechnology
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    • v.1 no.4
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    • pp.227-231
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    • 1991
  • A gene coding for a $\beta$-galactosidase of Bacillus subtilis HP-4 was cloned in E. coli JM109 by inserting HindIII digested fragment of B. subtilis HP-4 chromosomal DNA into the site of pBR322 and selecting recombinant transformant showing blue color on X-gal plate. The recombinant plasmid, named pBG109, was found to contain the 1.4 Kbp HindIII fragment originated from B. subtilis HP-4 chromosomal DNA by Southern hybridization. The cloned gene was stably maintained and expressed in E. coli JM109 and the pBG109 encoded $\beta$-galactosidase had the same enzymatic properties as those of $\beta$-galactosidase produced by B. subtilis HP-4.

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Molecular Cloning and Expression of a Xylanase Gene from Alkalophilic Bacillus sp.

  • Yu, Ju-Hyun;Kang, Yun-Sook;Park, Young-Seo;Bai, Dong-Hoon
    • Journal of Microbiology and Biotechnology
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    • v.1 no.4
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    • pp.251-255
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    • 1991
  • A 16 kilobase (kb) HindIII fragment of alkalophilic Bacillus sp. YC-335 containing a gene for xylanase synthesis was inserted at the HindIII site of pBR322 and cloned in Escherichia coli HB101. After subcloning of recombinant plasmid pYS52, the 1.5 kb fragment was found to code for xylanase activity, and the hybrid plasmid was named pYS55. The DNA insert of the plasmid was subjected to restriction enzyme mapping, which showed that pYS55 had single site for PuvII and SstI in the 1.5 kb insert fragment. Southern hybridization analysis revealed that the cloned gene was hybridized with chromosomal DNA from alkalophilic Bacillus sp. YC-335. About 64% of the enzyme activity was observed in the extracellular and periplasmic space of E. coli HB10l carrying pYS55.

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Molecular Cloning and Expression of the Acetyl Xylan Esterase Gene of Bacillus stearothermophilus in Escherichia coli (Bacillus stearothermophilus Acetyl Xylan Esterase 유전자의 크로닝과 Escherichia coli에서의 발현)

  • 김인숙;조쌍구;최용진
    • Microbiology and Biotechnology Letters
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    • v.21 no.6
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    • pp.542-548
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    • 1993
  • Bacillus stearothermophilus was shown to express multiple xylanolytic enzymes including acetyl xylan esterase. Genomic DNA of the strain partially digested with HindIII was ligated into the HindIII site of pBR322, and expressed in E. coli HB101 cells in order to clone the gene for acetyl xylan esterase. One transformant among 4000 screened formed a clear zone around its colony on the LB agar supplemented with 1.0% tributyrin. The functional clone harbored the recombinant plasmid pKMG5 with an insert of 5.1kb.

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Genetic Polymorphisms of t-PA and PAI-1 Genes in the Korean Population

  • Kang, Byung-Yong;Lee, Kang-Oh
    • Animal cells and systems
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    • v.7 no.3
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    • pp.249-253
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    • 2003
  • Abnormalities in fibrinolysis system is associated with risk of hypertension. In this report, the Alu repeat insertion/deletion (I/D) polymorphism of tissue plasminogen activator (t-PA) and the Hind III RFLP of plasminogen activator inhibitor-1 (PAI-1) genes were investigated in 115 normotensives and 83 patients with hypertension, and their association with anthropometrical data and plasma biochemical parameters were analyzed. There were no significant differences in the gene frequencies of the two candidate genes between normotensives and hypertensives, respectively. Our results indicate lack of associations between the two polymorph isms in t-PA and PAI-1 genes and risk of hypertension in the population under study. However, the Hind III RFLP of PAI-1 gene was significantly associated with plasma glucose level, suggesting its role in glucose metabolism. It needs to be tested whether this RFLP of PAI-1 gene is associated with insulin resistance syndrome or non-insulin dependent diabetes mellitus (NIDDM) in the Korean population.

restriction Site Polymorphism of mtDNA for differentiating Anopheles quadrimaculatus (Say) Sibling Species (미토콘드리아 DNA 제한효소 절단부위 변이에 의한 Anopheles quadrimaculatus (Say) 모기의 자매종 구별)

  • ;S.K. Narang
    • Korean journal of applied entomology
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    • v.29 no.2
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    • pp.132-135
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    • 1990
  • Three mitochondrial cDNA probes from Aedes albopictus were used to demonstrate restriction site polymorphism in mtDNA of three sibling species of Anopheles quadrimaculatus(Say). It was shown by DNA hybridization to have substantial sequence homology betwen the mtDNA of different genus. The proves reveled local restriction site variation between members of the Anopheles quadrimaculatus sibling species complex. Mitochondrical DNA (mtDNA), isolated from individual mosquitoes was digested by type II restriction enzymes and four enzymes were found to be useful for the purpose. Hind III alone could be used to obtain a diagnostic restriction pattern.

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Potential Applications of Recombinant DNA Probes for Relatedness Analysis of Fusarium oxysporum (Fuarium oxysporum의 유연관계 분석을 위한 Recombinant DNA의 Probe로서의 이용 가능성)

  • 김홍기;김영태;유승헌
    • Korean Journal Plant Pathology
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    • v.10 no.1
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    • pp.1-6
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    • 1994
  • Randomly chosen recombinant clones of Fusarium oxysporum were analysed to select useful probes for relatedness analysis of Fusarium oxysporum. Genomic DNA of F. oxysproum f. sp. cubense, digested with HindIII, was ligated to pUC118 and used to transform Escherichia coli strai DH5$\alpha$. Three clones were identified that hybridized to mutiple restriction fragments of some formae speciales of F. oxysporum. These probes detected repetitive sequences in HindIII or EcoRI digested DNAs. Repeated copy clone pFC46, pFC52 and pFC54 showed evident polymorphisms among ten formae speciales of this fungus. Since clone pFC 52 strongly hybridized to multiple EcoRI-digested restriction fragments of f. sp. cubense, it may be useful as a probe for analysis of other genetic characteristics of this forma specialis. The results suggest that our clones might be very useful as probes for relatedness analysis between or within formae speciales of Fusarium oxysporum.

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Molecular Cloning and Expression of Cellulase of Gene of Pseudomonas sp. in Escherichia coli (Pseudomonas sp.의 Cellulase 유전자의 대장균에의 클로닝 및 발현)

  • 정영철;김양우;노종수;성낙계;강신권
    • Microbiology and Biotechnology Letters
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    • v.18 no.6
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    • pp.633-639
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    • 1990
  • The genes for cellulases of Pseudomonas sp. LBC505 and CYC10, potent cellulase complex-producing strains, were cloned in Escherichia coli with pUC19. Recombinant plasmids pLCl and pLC2 were isolated from transformants producing cellulase by Congo red staining, and their genes cloned were 0.7 kb and 4.6 kb HindIII fragments, respectively. The inserts of pLCl and pLC2 were hybridized to chromosomal DNAs digested with HindIII from Pseudomona~ sp. LBC505 and CYC10, respectively. Immunodiffusion assays revealed that pLC1-and pLC2-encoded cellulase showed similarity with that of host strains. About 24% of cellulase activity was observed in the extracellular fraction of E. coli carrying pLC1, and its activity was higher about 1.4 times than that of LBC505. The enzymatic properties of pLC1 and pLC2 encoded cellulase were the same as those of cellulase from host strains. HPLC analysis and substrate specificity showed that cellulases were the same as those of cellulase from host strains. HPLC analysis and substrate specificity showed that cellulases cloned were endocellulase.

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