• Title/Summary/Keyword: Small protein

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Immunohistochemical studies in the intestine of the duck, Anas platyrhynchos platyrhyncos Linne, with ages (연령에 따른 청둥오리 장관 내분비세포에 대한 면역조직화학적 연구)

  • Lee, Jae-hyun;Ku, Sae-kwang;Lee, Hyeung-sik
    • Korean Journal of Veterinary Research
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    • v.38 no.1
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    • pp.1-8
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    • 1998
  • The relative frequency and distribution of bovine chromogranin(BCG)-, serotonin-, somatostatin(SOM)- and S-100 protein-immunoreactive cells in the intestinal tract of the duck (Anas platyrhynchos platyrhyncos, Linne) with ages were studied using immunohistochemical methods. BCG-immunoreactive cells were detected in duodenum on 23 days of incubation. Thereafter these cells were occurred throughout the intestine. SOM-immunoreactive cells were detected in the small intestine from hatching to 9 weeks. Thereafter they were also observed in colon. Serotonin-immunoreactive cells were detected throughout the intestinal tracts after hatching. These immunoreactive cells were increased with ages except that BCG-immunoreactive cells were decreased with ages from 6 weeks after hatching. BCG- and serotonin-immunoreactive cells were most frequently detected in colon regions and SOM-immunoreactive cells in duodenum regions, but no S-100 protein-immunoreactive cells were detected in this study.

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Exsisting Literatures Survey on the utilization aspects of Insect and worm for food and Medicinal Use (뉴스초점 - 곤충.벌레의 식품 및 의약품 이용에 관한 기존 문헌 조사)

  • Rhee, Sung Kap
    • Journal of the Korean Professional Engineers Association
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    • v.45 no.5
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    • pp.36-38
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    • 2012
  • Insect/worm is a source of protein food, more calcium than you think, made up of low-fat and high protein in the worms, 20% of the entire protein, nutrients, and so. because of this, the value of any insect food will rise. Is not argued that enough, livestock methane from gaseous material of the earth temperature no phi but not small role, and indeed. If a non-carbone missions from livestock are less and consequently the production of biofuels using worms because it is also expected to be available to the worms in cattle, such as no benefit is expected that you will be spotlighted.

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$^{13}C$ and $^{57}Fe$ END OR of Nitrogenase: Can it Tell the Substrate-Binding Site in the Active Site?

  • 이홍인
    • Proceedings of the Korean Biophysical Society Conference
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    • 2002.06b
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    • pp.18-18
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    • 2002
  • Nitrogenase, comprised of the MoFe and Fe proteins, catalyzes the reduction of dinitrogen to ammonia at ambient temperature and pressure. The MoFe protein contains two metal centers, the P-cluster (Fe8S7-8) and the FeMo-cofactor (Fe7S9:homocitrate), the substrate binding site. Despite the availability of the crystal structure of the MoFe protein, suprisingly little is known about the molecular details of catalysis at the active site, and no small-molecule substrate or inhibitor had ever been shown to directly interact with a protein-bound cluster of the functioning enzyme, until our electron-nuclear double resonance(ENDOR) study of CO-inhibited nitrogenase.(omitted)

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Bioinformatics Analysis of Hsp20 Sequences in Proteobacteria

  • Heine, Michelle;Chandra, Sathees B.C.
    • Genomics & Informatics
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    • v.7 no.1
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    • pp.26-31
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    • 2009
  • Heat shock proteins are a class of molecular chaperones that can be found in nearly all organisms from Bacteria, Archaea and Eukarya domains. Heat shock proteins experience increased transcription during periods of heat induced osmotic stress and are involved in protein disaggregation and refolding as part of a cell's danger signaling cascade. Heat shock protein, Hsp20 is a small molecular chaperone that is approximately 20kDa in weight and is hypothesized to prevent aggregation and denaturation. Hsp20 can be found in several strains of Proteobacteria, which comprises the largest phyla of the Bacteria domain and also contains several medically significant bacterial strains. Genomic analyses were performed to determine a common evolutionary pattern among Hsp20 sequences in Proteobacteria. It was found that Hsp20 shared a common ancestor within and among the five subclasses of Proteobacteria. This is readily apparent from the amount of sequence similarities within and between Hsp20 protein sequences as well as phylogenetic analysis of sequences from proteobacterial and non-proteobacterial species.

Angel Wing in a Young Captive-Reared Spot-Billed Duck (Anas poecilorhyncha) (포획되어 사육된 어린 흰뺨검둥오리에서 발생한 엔젤윙의 진단 및 치료 증례)

  • Jeong, Yikyeong;Lee, Sung Kyung;Park, Seongjun
    • Journal of Veterinary Clinics
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    • v.36 no.1
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    • pp.85-87
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    • 2019
  • Eight-week-old Spot-billed duck were presented with visible drooping of both of wings. On physical examination, the Spot-billed ducks revealed valgus deformity of the carpal joint resulting in the primary flight feathers protruding dorsally. The bird was in good body condition and there was no loss of motion in any of the joints in the wings. The bird was fed chicken pellet with 18.5% of protein level and reared in a cage. Based on the clinical presentation and physical examination 'angel wing' was diagnosed. Wing bandage and nutritional change to lower-protein diet with fresh vegetables were applied simultaneously. And duck was transferred to wider outside pen with small pond. Four-week afterward clinical signs of angel wing were improved.

Regulation of post-translational modification in breast cancer treatment

  • Heo, Kyung-Sun
    • BMB Reports
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    • v.52 no.2
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    • pp.113-118
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    • 2019
  • The small ubiquitin-related modification molecule (SUMO), one of the post-translational modification molecules, is involved in a variety of cellular functions where it regulates protein activity and stability, transcription, and cell cycling. Modulation of protein SUMOylation or deSUMOylation modification has been associated with regulation of carcinogenesis in breast cancer. In the dynamic processes of SUMOylation and deSUMOylation in a variety of cancers, SUMO proteases (SENPs), reverse SUMOylation by isopeptidase activity and SENPs are mostly elevated, and are related to poor patient prognosis. Although underlying mechanisms have been suggested for how SENPs participate in breast cancer tumorigenesis, such as through regulation of target protein transactivation, cancer cell survival, cell cycle, or other post-translational modification-related machinery recruitment, the effect of SENP isoform-specific inhibitors on the progression of breast cancer have not been well evaluated. This review will introduce the functions of SENP1 and SENP2 and the underlying signaling pathways in breast cancer for use in discovery of new biomarkers for diagnosis or therapeutic targets for treatment.

Regulation of c-fos promoter through interaction between dopamine D3 receptor and RGL, ral GDP dissociation stimulator-like

  • Park, Ju-Ran;Kim, So-Young;Kim, Kyeong-Man
    • Proceedings of the PSK Conference
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    • 2003.10b
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    • pp.89.2-89.2
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    • 2003
  • Ral GDP dissociation stimulator (Ral GDS) has been found to be an effector protein of Ras, and Ral, a member of small GTP-binding protein (G protein) superfamily, has been suggested to act downstream of Ras. Ral GDP dissociation stimulator-like (RGL) shares 50% amino acid identity with Ral GDP dissociation stimulator, and assumed to possess similar functional role. Using yeast two-hybrid screening, we found that dopamine D3 receptor interacts with RGL. Since RGL is known to regulate the expression of c-fos promoter, effects of D3R on gene expression of c-fos promoter was studied. (omitted)

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Effects of Nutritional Level on Digestive Enzyme Activities in the Pancreas and Small Intestine of Calves Slaughtered at Same Body Weight

  • Wang, X.B.;Ogawa, T.;Suda, S.;Taniguchi, K.;Uike, H.;Kumagai, H.;Mitani, K.
    • Asian-Australasian Journal of Animal Sciences
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    • v.11 no.4
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    • pp.375-380
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    • 1998
  • Six Holstein heifer calves weaned at 45 days-of-age were randomly allocated into high daily gain (1.1 kg/d, HDG) and low daily gain (0.56 kg/d, LDG) groups, and were slaughtered at 170 kg of live weight. Energy intake level in the feeding period was 2.4 $\times$ maintenance in 105 days for HDG and 1.4 $\times$ maintenance in 216 days for LDG calves. Total length of the small intestine was identical between groups, but both weights of the pancreas and of the small intestinal mucosa were greater (p < 0.01) for HDG calves. Alpha-amylase, lipase, proteinase, and trypsin activities of the whole pancreas were higher (p < 0.05) in HDG calves. Disaccharidase activity of the whole small intestinal mucosa was also higher (p < 0.10) for HDG than for LDG calves. However, the enzymatic activities, expressed as per gram or per protein of the pancreas and the small intestinal mucosa, were not affected (p > 0.10) by the plane of nutrition. These results suggest that the digestive enzyme activity in the small intestine varies primarily with the weight of tissues synthesizing the enzyme.

Cloning and Regulation of Schizosaccharomyces pombe Gene Encoding Ribosomal Protein S20

  • Lee, Yoon-Jong;Kim, Kyunghoon;Park, Eun-Hee;Ahn, Ki-Sup;Kim, Daemyung;Lim, Chang-Jin
    • Journal of Microbiology
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    • v.39 no.1
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    • pp.31-36
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    • 2001
  • A cDNA clone encoding the ribosomal protein S20 has been isolated from the Schizosaccharomyces pombe cDNA library by colony hybridization. The insert contained in the original plasmid pYJ10 was transferred intro shuttle vector pRS316 generate plasmid pYJll. The dDNA insert of plasmid pYJll, contains 484 nucleotides and encodes a protein of 118 amino acids with a calculated mass of 13,544 daltons. The deduced amino acid sequence of S. pombe ribosomal protein S20 is very homologous with fruit fly, rat, and budding yeast counterparts. It is also homologous with Xenopus S22 ribosomal protein. S. pombe ribosomal protein S20 appears to be relatively hydruphobic except the C-terminal region. The 728 bp upstream region of the S20 gene was amplified from chromosomal DNA and transferred into the BamHI/EcoRI site of the promoterles $\beta$-galactosidase gene of the vector YEp357R, which resulted in fusion plasmid pYS20. The synthesis of $\beta$-galactosidase from the fusion plasmid appeared to be the highest in the mid-exponential phase. The S. pombe cells with the fusion plasmid grown at 35$\^{C}$ gave lower $\beta$-galactosidase activity than the cells grown at 30$\^{C}$. Computer analysis showed the consensus sequence CAGTCACA in the upstream regions of various ribosomal protein genes in S. pombe, which would be involved in the coordinated expression of small ribosomal proteins.

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Identification of Diseasomal Proteins from Atopy-Related Disease Network (아토피관련 질병 네트워크로부터 질병단백체 발굴)

  • Lee, Yoon-Kyeong;Yeo, Myeong-Ho;Kang, Tae-Ho;Yoo, Jae-Soo;Kim, Hak-Yong
    • The Journal of the Korea Contents Association
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    • v.9 no.4
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    • pp.114-120
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    • 2009
  • In this study, we employed the idea that disease-related proteins tend to be work as an important factor for architecture of the disease network. We initially obtained 43 atopy-related proteins from the Online Mendelian Inheritance in Man (OMIM) and then constructed atopy-related protein interaction network. The protein network can be derived the map of the relationship between different disease proteins, denoted disease interaction network. We demonstrate that the associations between diseases are directly correlated to their underlying protein-protein interaction networks. From constructed the disease-protein bipartite network, we derived three diseasomal proteins, CCR5, CCL11, and IL/4R. Although we use the relatively small subnetwork, an atopy-related disease network, it is sufficient that the discovery of protein interaction networks assigned by diseases will provide insight into the underlying molecular mechanisms and biological processes in complex human disease system.