• Title/Summary/Keyword: EST Analysis

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Identification and in silico analysis of two types of serpin genes from expressed sequence tags (ESTs) of the Oriental land snail, Nesiohelix samarangae (동양달팽이 (Nesiohelix samarangae) 의 expressed sequence tags (ESTs) 로부터 분리한 2종류의 Serpin 유전자 분석)

  • Park, So Young;Jeong, Ji Eun;Hwang, Hee Ju;Wang, Tae Hun;Park, Eun Bi;Kim, Yong Min;Lee, Jun-Sang;Han, Yeon Soo;Yang, Seung-Ha;Lee, Yong Seok
    • The Korean Journal of Malacology
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    • v.30 no.2
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    • pp.155-163
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    • 2014
  • Serpins are a group of proteins involved in the regulation of serine and other type of proteases, and have been identified in many kinds of organisms from invertebrates to vertebrates. Serpins are known to regulate the proteolytic cascades of the innate immune pathways in addition to their roles in blood coagulation, angiogenesis, fibrinolysis, inflammation and tumor suppression. In this study, we have isolated two partial serpin gene fragments from expressed sequence tags (ESTs) of Nesiohelix samarangae. Dotplot analysis indicates that they are of two different types, Ns-serpin type 1 and Ns-serpin type 2. Ns-serpin type 1 has 819 bp coding region (272 amino acids), whereas Ns-serpin type 2 has 555 bp coding region (185 amino acids). Molecular phylogenetic analysis shows that the identified serpins have high similarities to their counterparts in the California see slug, Aplysia californica. Yet, the precise biological and immunological roles of these Ns-serpins remain to be further investigated using RNA interference and other molecular techniques.

Evaluation of Thermo Tolerance of 'Nistari' an Indigenous Strain of Multivoltine Silkworm, Bombyx mori L.

  • Moorthy, S.M.;Das, S.K.;Mukhopadhyay, S.K.;Mandal, K.;Urs, S. Raje
    • International Journal of Industrial Entomology and Biomaterials
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    • v.15 no.1
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    • pp.17-21
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    • 2007
  • An indigenous multivoltine silkworm, Nistari was evaluated for their thermo tolerance by exposing the larvae to various temperature regimes for eight hours. Among different temperature exposed, this strain has significant tolerance at $32^{\circ}C$. Analysis of heat shock protein revealed the expression of 70 kDa and 64 kDa polypeptides in fat body and midgut tissues. Interestingly esterase isozyme pattern in midgut showed characteristic expression of Est-1 and Est-3 at different temperatures signifying role in heat and cold shock.

Suppression Subtractive Hybridization Identifies Novel Transcripts in Regenerating Hydra littoralis

  • Stout, Thomas;McFarland, Trevor;Appukuttan, Binoy
    • BMB Reports
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    • v.40 no.2
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    • pp.286-289
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    • 2007
  • Despite considerable interest in the biologic processes of regeneration and stem cell activation, little is known about the genes involved in these transformative events. In a Hydra littoralis model of regeneration, we employed a rapid shotgun suppression subtractive hybridization strategy to identify genes that are uniquely expressed in regenerating tissue. With an adaptor-PCR based technique, 16 candidate transcripts were identified, 15 were confirmed unique to mRNA isolated from hydra undergoing regeneration. Of these, 6 were undescribed in GenBank and allied expressed sequence tag (EST) databases (GenBank + EMBL + DDBJ + PDB and the Hydra EST database). BLAST analysis of these sequences identified remarkably similar sequences in anonymous ESTs found in a wide variety of animal species.

Genetic Studies of Oenothera odorata Populations in Korea Based on Isozyme Analysis

  • Huh, Hong-Wook
    • Journal of Plant Biology
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    • v.39 no.3
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    • pp.223-229
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    • 1996
  • The genetic variation in Korean evening primorse (Oeothera odorata L.) populations was examiend to estimate the level of allozyme variation within populatons using starch gel electrophoresis. 7 of 13 loci (Adh, Est-1, Est-2, Mdh-2, Pgd-2, Pgm-1, and Idh) revealed (Ps=43.2%) were polymorphic. The mean number of alleles per locus (A) and polymorphic locus (Ap) for populations were 1.64 and 2.46, respectively. The effective number of alleles (Aep) within populations relatively was low ranging from 1.08 to 1.22 with a mean of 1.14. Within populations, the mean number of allele per polymorphic loci (Ap) was 2.46, the mean number of alleles per locus (A) was 1.64, and the mean genetic diversity was 0.093. About 2.7% of the total allozyme diversity resided among populations (Mean GST=0.0274). FIS, a measure of the deviation from random mating within 13 populations, was relative low (mean FIS=0.03636). The indirect estimate of gene flow, based on the mean GST, was high (Nm=8.88). Estimates of gene flow were consistent with low levels of genetic differentiation among populations.

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Genetic Variation of the Pleurotus ostreatus Complex Based on Isozyme Analysis (동위효소 분석에 의한 Pleurotus ostreatus Complex의 유전적 변이)

  • Lee, Hee-Kyung;Yoo, Young-Bok;Min, Kyung-Hee
    • The Korean Journal of Mycology
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    • v.27 no.5 s.92
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    • pp.328-336
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    • 1999
  • Isozyme comparisons of mycelial extracts from Pleurotus ostreatus were undertaken using isoelectric focusing. Enzyme isozyme patterns were Used to describe the extent of geographical diversity and degree of intraspecific variation in these extracts. A total of 77 bands were resolved from six different enzymes. Cluster analyses were performed using the zymograms for esterase (EST), glucose phosphate isomerase (GPI), leucine aminopeptidase (LAP), malate dehydrogenase(MDH), peroxidase (POX), and phosphoglucomutase (pGM). EST gave multiple banding patterns, while less variability was observed for GPI, MDH, and PGM. Cluster analyses demonstrated that strains of P. ostreatus from geographically different origins are genetically divergent, supporting the idea that there is little or no gene flow between these geographically distant population groups.

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RGISS: Rice (Oryza sativa L. ssp. japonica) Genome Information Service System

  • Lee, Dae-Sang;Seo, Hwa-Jung;Hahn, Jang-Ho;Kong, Eun-Bae;Park, Kie-Jung
    • Genomics & Informatics
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    • v.5 no.4
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    • pp.194-195
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    • 2007
  • We have constructed the Rice Genome Information Service System (RGISS), which is an information service system of the Oryza sativa L. ssp. japonica (rice) genome, using the released version of rice Build 3.0 pseudomolecules based on the Ensembl architecture. The nonredundant library, composed of 3,360 clones of BACs, PACs, and fosmids, was used to construct supercontigs. RGISS contains 50,717 annotated genes from GenBank, 56,161 predicted genes from FgeneSH, and information on 9,587 markers, which includes STS, SSR, and EST-based RFLP. The 20,180 ESTs sequenced by the Korea National Institute of Agricultural Biotechnology (NIAB) were aligned and mapped into 168,792 exons. By gene ontology analysis, the classified protein numbers in the rice genome were 6158, 4531, and 12,364 proteins, which were mapped to molecular function, cellular component, and biological process, respectively.

A study on the Byzantine Costume -An analysis of constructional elements of the Costume Form- (Byzantine시대의 복식에 관한 연구 -복장 형태구성의 요인 해석-)

  • Kim Ok Jin
    • Journal of the Korean Society of Clothing and Textiles
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    • v.3 no.1
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    • pp.25-30
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    • 1979
  • Le propos de la presente consideration est de deceler Ie probleme du costume au niveau de probleme de l'art pur qui, comme dit Hegel, repond a un besoin primitif qui consiste a exterioriser et a concretiser les representations et les idees nees dans I'esprit humain. II va de soi que c'est une sorte de problemes appartenants a la theorie generale du costume. Mais il nous semble que chez nous on a neglige d'analyser les elements du costume sous l'angle de cette exteriorisation de l'idee esthetique que nous avons essay de souligner. Nous avons pris cette fois, pour un modele de ce sujet, les costumes sous Justinien (527-565) de l'Empire byzantin.

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An EST survey of genes expressed in liver of rock bream(Oplegnathus fasciatus) with particular interests on the stress-responsive and immune-related genes

  • Park, Byul-Nim;Park, Ji-Eun;Kim, Ki-Hong;Kim, Dong-Soo;Nam, Yoon-Kwon
    • Proceedings of the Korean Aquaculture Society Conference
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    • 2003.10a
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    • pp.43-43
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    • 2003
  • EST analysis was performed to identify stress-responsive and immune-related genes from rock bream (Oplegnathus fasciatus). cDNA libraries were constructed with liver and randomly chosen 624 clones were subjected to automated sequence analysis. Of 624 clones sequenced in total, approximately 15% of ESTs was novel sequences (no match to GenBank) or sequences with high homology to hypothetical/unknown genes. The bioinforamtic sequence analysis including functional clustering, homology grouping, contig assembly with electronic northern and organism matches were carried out. Several potential stress-responsive biomarker and/or immune-related genes were identified in all the tissues examined. It included lectins, ferritins, CP450, proteinase, proteinase inhibitors, anti-oxidant enzymes, various heat-shock proteins, warm temperature acclimation protein, complements, methyltransferase, zinc finger proteins, lysozymes, macrophage maturation associated protein, and others. This information will offer new possibilities as fundamental baseline data for understanding and addressing their molecular mechanism involved in host defense and immune systems of this species.

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Performance Improvement of BLAST using Grid Computing and Implementation of Genome Sequence Analysis System (그리드 컴퓨팅을 이용한 BLAST 성능개선 및 유전체 서열분석 시스템 구현)

  • Kim, Dong-Wook;Choi, Han-Suk
    • The Journal of the Korea Contents Association
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    • v.10 no.7
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    • pp.81-87
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    • 2010
  • This paper proposes a G-BLAST(BLAST using Grid Computing) system, an integrated software package for BLAST searches operated in heterogeneous distributed environment. G-BLAST employed 'database splicing' method to improve the performance of BLAST searches using exists computing resources. G-BLAST is a basic local alignment search tool of DNA Sequence using grid computing in heterogeneous distributed environment. The G-BLAST improved the existing BLAST search performance in gene sequence analysis. Also G-BLAST implemented the pipeline and data management method for users to easily manage and analyze the BLAST search results. The proposed G-BLAST system has been confirmed the speed and efficiency of BLAST search performance in heterogeneous distributed computing.