• Title/Summary/Keyword: Small protein

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Identification and analysis of microRNAs in Candida albicans (Candida albicans의 마이크로RNA 동정과 분석)

  • Cho, Jin-Hyun;Lee, Heon-Jin
    • Journal of Life Science
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    • v.27 no.12
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    • pp.1494-1499
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    • 2017
  • Oral infection due to Candida albicans is a widely recognized and frequent cause of superficial infections of the oral mucosa (oral candidiasis). Although oral candidiasis is not a life-threatening fungemia, it can cause severe problems in individuals under certain conditions. MicroRNAs (miRNAs) are noncoding, small RNA molecules, which regulate the expression of other genes by inhibiting the translation of target mRNAs. The present study was designed to identify miRNAs in C. albicans and determine their possible roles in this organism. miRNA-sized small RNAs (msRNAs) were cloned in C. albicans by deep sequencing, and their secondary structures were analyzed. All the cloned msRNAs satisfied conditions required to qualify them as miRNAs. Bioinformatics analysis revealed that two of the most highly expressed C. albicans msRNAs, Ca-363 and Ca-2019, were located in the 3' untranslated region of the corticosteroid-binding protein 1 (CBP1) gene in a reverse orientation. miRNA mimics were transformed into C. albicans to investigate their RNA-inhibitory functions. RNA oligonucleotide-transformed C. albicans was then observed by fluorescent microscopy. Quantitative PCR analysis showed that these msRNAs did not inhibit CBP1 gene expression 4 hr and 8 hr after ectopic miRNA transformation. These results suggest that msRNAs in C. albicans possess an miRNA-triggered RNA interference gene-silencing function, which is distinct from that exhibited by other eukaryotic systems.

A Combined Approach for Locating Box H/ACA snoRNAs in the Human Genome

  • Eo, Hae Seok;Jo, Kwang Sun;Lee, Seung Won;Kim, Chang-Bae;Kim, Won
    • Molecules and Cells
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    • v.20 no.1
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    • pp.35-42
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    • 2005
  • A novel combined method for locating box H/ACA small nucleolar RNAs (snoRNAs) is described, together with a software tool. The method adopts both a probabilistic hidden Markov model (HMM) and a minimum free energy (MFE) rule, and filters possible candidate box H/ACA snoRNAs obtained from genomic DNA sequences. With our novel method 12 known box H/ACA snoRNAs, and one strong candidate were identified in 30 nucleolar protein genomic sequences.

GENETICAL STUDIES ON NATIVE CHICKENS IN INDONESIA

  • Yamamoto, Y.;Namikawa, T.;Okada, I.;Nishibori, M.;Mansjoer, S.S.;Martojo, H.
    • Asian-Australasian Journal of Animal Sciences
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    • v.9 no.4
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    • pp.405-410
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    • 1996
  • Phylogenetic analyses were carried out using four Indonesian native chicken breeds; Kampung, Bangkok, Pelung and Kedu. Gene frequencies of four blood group (A, B, D and E) and eight electrophoretic loci (akp, Akp-2, Es-1, Amy-1, Alb, Tf, Pas and Pa-1) were examined. Geographical and breed specific trends in the gene frequencies were not found in the local population of Kampung breed or in four native breeds. The values of average heterozygosity were estimated as 0.35-0.45. Genetic distances among the local populations of Kampung breed and other native breeds were comparatively small. In a cluster analysis, the Bangkok breed and Kampung E population showed distance from another cluster. The coefficient of gene differentiation for local populations of Kampung breed was estimated as 0.099.

THE PHENOTYPIC RELATIONS BETWEEN SOMATIC CELL COUNTS AND MILK CONSTITUENTS OF CLINICAL AND NON-CLINICAL MASTITIS MILK OF DAIRY COWS

  • Kobayashi, S.;Ohtani, T.
    • Asian-Australasian Journal of Animal Sciences
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    • v.3 no.4
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    • pp.293-298
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    • 1990
  • Pathogen infections or mastitis inflammations usually develop differently on each udder of lactating cow. Although healthy udders will be attacked by the mastitis pathogens or the pathogens from blood in a long term, they would not be always inflamed. Somatic cell counts (SCC) in milk, which is utilized as an index of mastitis diagnosis, and the relation among SCC and milk constituents will have to be examined on each udder individually. Twelve cows of a Holstein cow herd in Nasu Research Station, which were suffering clinical or non-clinical mastitis, were selected, and SCC and milk constituents on each udder milk were measured. The effects of mastitis infection on udder milk components were relatively small except lactose content on udder milks of non-clinical mastitis (SCC< $10.0{\times}10^5$ per ml milk). On udder milks of clinical mastitis, however, high negative correlations were recognized between SCC and milk components. On different sampling days, high contents of fat and protein corresponded to that of total solids.

A Case of Eosinophilic Gastroenteritis (호산구성 위장관염 1례)

  • Lee, Hwa Yun;Kim, Chan Jong
    • Pediatric Gastroenterology, Hepatology & Nutrition
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    • v.7 no.2
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    • pp.239-242
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    • 2004
  • Eosinophilic gastroenteritis is a rare condition of unknown etiology characterized by peripheral eosinophilia, eosinophilic infiltration of the gastrointestinal tract, and gastrointestinal symptoms. Eosinophilic gastroenteritis is generally classified according to the Klain classification: predominant mucosal, muscular, and subserosal disease. Mucosal involvement may result in abdominal pain, nausea, vomiting, diarrhea, weight loss, anemia, protein-losing enteropathy, and intestinal perforation. Patients with muscular layer disease generally have obstructive symptoms. Subserosal eosinophilic infiltration may result in development of eosinophilic ascites. Most commonly, the stomach, duodenum, and small bowel are involved. A 13-year-old girl came to our hospital presenting with chronic, intermittent abdominal pain. She showed peripheral eosinophilia and biopsy specimen of the duodenum revealed eosinophilic infiltration of the mucosal layer. We here report a case of eosinophilic gastroenteritis.

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Nickel Complexes of Alanine Having a Preference for One Chiral Form over Another upon Crystallization

  • Khatib, Awni;Aqra, Fathi
    • Bulletin of the Korean Chemical Society
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    • v.30 no.9
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    • pp.2017-2020
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    • 2009
  • Three complexes, [bis(L-, D- and DL-alaninato)(diaqua)]nickel(II) di-hydrate, were prepared and characterized by X-ray crystallography, gas chromatography, UV-Visible spectroscopy and isothermal calorimetry. Small deviations from the 50:50 distribution of the enantiomers assigned to chiral preferences of the ligands in the complexes were observed. The surprising and unexpected results indicate that complexing alanine with nickel(II) ion alters the racemization rates of D and L isomers of the amino acid. The precipitated complex due to change in pH resulted in preferential precipitation of one isomer with respect to the other. It has been observed that this alternation is ogmented by the long time span which would result in preferential protein forming from the L-isomer. Although the results are bizarre and perplexing, they are fascinating and sound scientifically.

Reverse Micelles를 이용한 BSA 가용화에서 pH와 Salt Type의 영향

  • No, Seon-Gyun;Gang, Chun-Hyeong;Park, Don-Hui
    • 한국생물공학회:학술대회논문집
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    • 2000.04a
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    • pp.157-160
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    • 2000
  • Solubilization of bovine serum albumin(BSA) is performed using a reverse micellar system consisting of sodium bis(2-ethylhexyl) sulfosuccinate(AOT). Of particular, effects of pH, salt concentration and its type on the solubilization are investigated by means of the phase-transfer method. One of significant findings in our study is that the protein is to a large extent aggregated in the interface between organic and aqueous phases at lower pH and small salt concentration. In this presentation, the optimal extraction process conditions for BSA, which is bulky, are proposed.

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Identification of innexin2, Gap Junction channel Protein Expressed during Embryogenesis in the Bombyx mori

  • Hong, Sun-Mee;Kang, Seok-Woo;Hwang, Jae-Sam;Goo, Tae-Won;Yun, Eun-Young;Park, Kwang-Ho;Nho, Si-Kab
    • Proceedings of the Korean Society of Sericultural Science Conference
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    • 2003.10a
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    • pp.100-101
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    • 2003
  • Gap junctions are membrane channels that directly connect the cytoplasm of neighboring cells, allowing the exchange of ions and small molecules. Two analogous families of proteins, the connexins and innexins are the channel-forming molecular vertebrates and invertebrates, respectively. Here, we present the molecular cloning and sequences analysis of novel innexiins, Binx2, expressed during Bombyx mori embryonic development. (omitted)

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Studies on Productivity and Nutrient Quality of Forage Rape (Brassica napus Subsp. oleifera) V. Influence of plant density on growth, yield and nutrient quality of forage rape. (사초용유채 ( Brassica napus Subsp. oleifera ) 의 생산성과 사료가치에 관한 연구 V. 재식밀도 차이가 사초용 유채의 생육특성, 수량 및 영양가치에 미치는 영향)

  • ;;Ichiro Goto
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.9 no.2
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    • pp.108-112
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    • 1989
  • To determine optimal plant density of forage rape in southern areas of Korea, Velox, the highest yielding variety among seventeen introduced varieties of forage rape, was grown under five different plant densities. The results obtained are summarized as follows: 1. Yield components such as stem diameter, number of main stem,leaves, number of branches and number of branch leaves and fresh yield were highest at the plots with 50cm row spacing and 30cm plant spacing. 2. Dry matter yield, content of crude protein, IVDMD and digestible dry matter yield were highest at the plots of broadcasting. 3. Since plants under high density were high in plant length and small in stem diameter, contents of crude fiber such as NDF, ADF, cellulose and lignin were lowest at the plots of broadcasting.

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Fine Needle Aspiration Cytology of Osteoclastic Giant Cell Tumor of the Pancreas (췌장의 파골성 거대세포종양의 세침흡인세포학적 소견)

  • Sung, Sun-Hee;Han, Woon-Sup
    • The Korean Journal of Cytopathology
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    • v.9 no.1
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    • pp.89-94
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    • 1998
  • A case of fine needle aspiration cytology of an osteoclastic giant cell tumor of pancreas, which is an uncommon variant of ductal adenocarcinoma, is described. Aspirated tumor cells were characterized by three populations: (1) bland osteoclast like giant cells with multiple small, round nuclei with distinct nucleoli, and abundant cytoplasm, (2) Individually scattered or loosely clustered medium sized mononuclear tumor cells, having fine chromatin, smooth nuclear membrane, often prominent nucleoli, and high N/C ratio, (3) bland or atypical spindle shaped cells. Osteoid like lacy material was also seen on cell block section. The immunohistochemical studies using paraffin embedded cell block section showed positivities for vimentin and lysozyme in both giant and mononuclear turner cells. However, they were negative for cytokeratin, epithelial membrane antigen, S-100 protein, carcinoembryonic antigen, and p53.

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