• Title/Summary/Keyword: Sequenced

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Two putative novel serotypes of Tibet orbivirus isolated from Culicoides spp. in Yunnan, China

  • Ying-Liang Duan;Zhen Xing Yang;Yu Wen He; Le Li
    • Journal of Veterinary Science
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    • v.24 no.2
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    • pp.18.1-18.7
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    • 2023
  • Tibet orbivirus (TIBOV) was identified as a novel orbivirus in 2014. Antibodies against TIBOV were detected in cattle, Asian buffalo, and goats, while all the sequenced TIBOV strains were isolated from mosquitos and Culicoides. The known TIBOV strains have been classified into four putative serotypes. In this study, two TIBOV strains isolated from Culicoides spp. in Shizong County of Yunnan Province, China, were fully sequenced. The phylogenetic analysis of outer capsid protein 2 (VP2) indicated that these two viral strains belong to two novel putative serotypes of TIBOV. The updated putative serotypes may help in an investigation of the distribution and virulence of TIBOV.

An Adaptive Priority-based Sequenced Route Query Processing Method in Road Networks (도로 네트워크 환경에서 적응적 우선순위 기반의 순차적 경로 처리 기법)

  • Ryu, Hyeongcheol;Jung, Sungwon
    • KIISE Transactions on Computing Practices
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    • v.20 no.12
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    • pp.652-657
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    • 2014
  • Given a starting point, destination point and various Points Of Interest (POIs), which contain a full or partial order, for a user to visit we wish to create, a sequenced route from the starting point to the destination point that includes one member of each POI type in a particular order. This paper proposes a method for finding the approximate shortest route between the start point, destination point and one member of each POI type. There are currently two algorithms that perform this task but they both have weaknesses. One of the algorithms only considers the distance between the visited POI (or starting point) and POI to visit next. The other algorithm chooses candidate points near the straight-line distance between the start point and destination but does not consider the order of visits on the corresponding network path. This paper outlines an algorithm that chooses the candidate points that are nearer to the network path between the start point and destination using network search. The algorithm looks for routes using the candidate points and finds the approximate shortest route by assigning an adaptive priority to the route that visits more POIs in a short amount of time.

Identifying and Sequencing of the Elementary Concepts of Measurement of Length

  • Alam, Sk. Samsul
    • Research in Mathematical Education
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    • v.13 no.2
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    • pp.123-139
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    • 2009
  • In this paper some attempts have been made (a) to identify all the elementary concepts of the major concept "measurement of length" and, (b) to find the sequential order of these elementary concepts. Total 714 elementary concepts have been identified and sequenced.

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Terminal Nucleotide Sequences in the Double-stranded RNA Genome Segments of Infectious Pancreatic Necrosis Virus DRT Strain

  • Chung, Hye-Kyung;Park, Hong-Chul;Ichiro Uyeda;Masamichi Isogai;Lee, Hyung-Hoan
    • Journal of Microbiology and Biotechnology
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    • v.6 no.5
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    • pp.361-363
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    • 1996
  • The terminal regions of the double-stranded RNA (dsRNA) genome segments of infectious pancreatic necrosis virus (IPNV) DRT strain were sequenced. The dsRNAs, which were $^{32}P$-labelled at their 3'-termini by incubation with [$^{32}P$]pCp and T4 RNA ligase, were separated by 5$%$ polyacrylamide gel electrophoresis, and the segments A and B of IPNV-DRT were sequenced by two-dimensional gel electrophoresis. The 5'-terminal sequences of the IPNV-DRT plus strand from two genome segments were found to have the same conserved nucleotide (5'-CGG(C/A)A-), but the 3'-terminal sequences -CCCCAGGCG-3' and -CGGACCCCG-3' were found in the plus strand from segments A and B, respectively. The inverted oligonucleotide sequences of 3'-terminal of between segments A and B were found and they differ from those of other IPNVs.

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Cloning of a Ribonucleotide Reductase Gene of the Herpes Simplex Virus Type 2 Strain G

  • Kim, Hee-Jin;Lee, Si-Kyung;Byun, Si-Myung;Lee, Hyung-Hoan
    • BMB Reports
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    • v.36 no.5
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    • pp.514-519
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    • 2003
  • The ribonucleotide reductase (RR) 2 gene of the HSV-2 strain G was cloned, sequenced, and expressed in an E. coli cell. The RR2 gene was located on the PstI 2.4 kb fragment, which was cloned and sequenced. The ORF of the gene was 1,011 bp and its termination codon was TAG; also, the CATATAA sequence was present in the promoter of the RR2 gene. A Poly A signal sequence (AATAAA) was found in the 3'-noncoding region. The RR2 proteins that were produced in the E. coli and Vero cells were confirmed using a Western blot analysis. SDS-PAGE revealed that the molecular weights of the fusion-RR2 that was produced in the E. coli cells were approximately 24 kDa and 38 kDa in the Vero cells. The RR2 proteins were soluble. The differences in the molecular weights might be due to modifications in the Vero cells.

Comparative Analysis of Completely Sequenced Insect Mitochondrial Genomes

  • Lee, Jin-Sung;Kim, Ki-Hwan;Suh, Dong-Sang;Park, Jae-Heung;Suh, Ji-Yoeun;Chung, Kyu-Hoi;Hwang, Jae-Sam
    • International Journal of Industrial Entomology and Biomaterials
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    • v.2 no.1
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    • pp.1-6
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    • 2001
  • This paper reports a few characteristics of seven insect mitochondrial genomes sequenced completely (Bombyx mori, Drosophila melanogaster, D. yakuba, Apis mellifera, Anopheles gambiae, A. quadrimaculatus, and Locusta migratoria). Comparative analysis of complete mt genome sequences from several species revealed a number of interesting features (base composition, gene content, A+T-rich region, and gene arrangement, etc) of insect mitochondrial genome. The properties revealed by our work shed new light on the organization and evolution of the insect mitochondrial genome and more importantly open up the way to clearly aimed experimental studies for understanding critical roles of the regulatory mechanisms (transcription and translation) in mitochondrial gene expression.

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Some Universal Characteristics of Intertidal Bacterial Diversity as Revealed by 16S rRNA Gene-Based PCR Clone Analysis

  • Shuang, J.L.;Liu, C.H.;An, S.Q.;Xing, Y.;Zheng, G.Q.;Shen, Y.F.
    • Journal of Microbiology and Biotechnology
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    • v.16 no.12
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    • pp.1882-1889
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    • 2006
  • A 16S rDNA clone library was generated to investigate the bacterial diversity in intertidal sediment from the coast of the Yellow Sea, P. R. China. A total of 102 clones were sequenced and grouped into 73 OTUs using a phylogenetic approach. The sequenced clones fell into 11 bacterial lineages: Proteobacteria, Bacteroidetes, Planctomycetes, Chloroflexi, Acidobacteria, Actinobacteria, Firmicutes, Spirochaetes, and candidate divisions of BRCl, OP3, and OP1l. Based on a phylogenetic analysis of these bacteria, together with the ten most closely related sequences deposited in the GenBank, it was concluded that intertidal bacteria are most likely derived from marine bacteria with a remarkable diversity, and some are particularly abundant in intertidal sediment.

Fibrobacter succinogenes, a Dominant Fibrolytic Ruminal Bacterium: Transition to the Post Genomic Era

  • Jun, H.S.;Qi, M.;Ha, J.K.;Forsberg, C.W.
    • Asian-Australasian Journal of Animal Sciences
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    • v.20 no.5
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    • pp.802-810
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    • 2007
  • Fibrobacter succinogenes, a Gram-negative, anaerobic ruminal bacterium is a major fibre digesting species in the rumen. It intensively degrades plant cell walls by an erosion type of mechanism, burrowing its way through the complex matrix of cellulose and hemicellulose with the release of digestible and undigested cell wall fragments. The enzymes involved in this process include a combination of glucanases, xylanases, arabinofuranosidase(s) and esterases. The genome of the bacterium has been sequenced and this has revealed in excess of 100 putative glycosyl hydrolase, pectate lyase and carbohydrate esterase genes, which is greater than the numbers reported present in other major cellulolytic organisms for which genomes have been sequenced. Modelling of the amino acid sequences of two glycanases, CedA and EGB, by reference to crystallized homologs has enabled prediction of the major features of their tertiary structures. Two dimensional gel electrophoresis in conjunction with mass spectroscopy has permitted the documentation of proteins over expressed in F. succinogenes grown on cellulose, and analysis of the cell surfaces of mutant strains unable to bind to cellulose has enabled the identification of candidate proteins with roles in adhesion to the plant cell wall substrate, the precursor to cellulose biodegradation.

A Proof Method of Logic Programs in Parallel Environment (병렬화를 위한 논리 프로그램의 증명 방법)

  • 이원석
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.18 no.3
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    • pp.425-438
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    • 1993
  • Due to the producer-consumer dependency of shared variables, the potential parallelism embeded in the logic programming language has not been fully examined. The method proposed in this paper eliminates the dependency of shared variables by introducing number-sequenced variables in expanding an AND-OR proof tree. Basically, the execution of a logic program can be divided into two phases : expanding an AND-OR tree and proving the tree by matching facts with leaf nodes. In the course of the first phase, a set of number-sequenced variables are produced by expanding an AND-OR tree in the breadth-first searching. Based on the information of number-sequence, each of them is verified in the second phase in order to prove the tree. Consequently, the proposed algorithm can explore more parallelism without the dependency of shared variables.

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Novel $\alpha$-Glucosidase from Extreme Thermophile Thermus caldophilus GK24

  • Nashiru, Oyekanmi;Koh, Suk-Hoon;Lee, Se-Yong;Lee, Dae-Sil
    • BMB Reports
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    • v.34 no.4
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    • pp.347-354
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    • 2001
  • $\alpha$-Glucosidase of an extreme thermophile, Thermus caldophilus GK24 (TcaAG), was purified 80-fold from cells to a homogeneous state and characterized. The enzyme exhibited optimum activity at pH 6.5 and $90^{\circ}C$, and was stable from pH 6.0 to 85 and up to $90^{\circ}C$. The enzyme had a half-life of 85 minutes at $90^{\circ}C$. An analysis of the substrate specificity showed that the enzyme hydrolyzed the non-reducing terminal unit of $\alpha$-1,6-glucosidic linkages of isomaltosaccharides and panose, $\alpha$-1,3-glycosidic bond of nigerose and turanose, and $\alpha$-1,2-glycosidic bond of sucrose. The gene encoding the TcaAG was cloned, sequenced, and sequenced in E. coli. The nucleotide sequence of the gene encoded a 530 amino acid polypeptide and had a G+C content of 68.4% with a strong bias for G or C in the third position of the codons (93.6%). A sequence analysis revealed that TcaAG belonged to the $\alpha$-amylase family. We suggest that this monomeric, thermostable, and broad-acting $\alpha$-glucosidase is a departure from previously exhibited specificities. It is, therefore, a novel $\alpha$-glucosidase.

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