• Title/Summary/Keyword: library characterization

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EST-based Identification of Genes Expressed in the Brain of the Olive Flounder Paralichthys olivaceus

  • Lee, Jeong-Ho;Noh, Jae-Koo;Kim, Hyun-Chul;Park, Choul-Ji;Min, Byung-Hwa;Kim, Young-Ok;Kim, Jong-Hyun;Kim, Kyung-Kil;Kim, Woo-Jin;Myeong, Jeong-In
    • Fisheries and Aquatic Sciences
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    • v.12 no.4
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    • pp.286-292
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    • 2009
  • We have constructed a cDNA library using brain samples of olive flounder Paralichthys olivaceus. Here, we described the study on gene identification by screening 356 clones from the brain cDNA library of olive flounder. Here, we screened 356 clones from the library to identify genes. Of these, 176 (49.5%) were identified as orthologs of known genes from olive flounder and other organisms. Among the 176 EST clones, 33 (18.7%) represented 11 unique genes that are identical to expressed sequence tags (ESTs) reported for olive flounder, and 120 (68.2%) represented 102 unique genes known from other organisms. The percentage of unknown genes (50.5%) is higher than in other olive flounder cDNA libraries (Lee et al., 2003, 2006, 2007), reflecting the high complexity of brain tissue. Further studies of expression characterization and developmental behavior related to these genes should provide useful insight into the physiological functions of the brain in olive flounder.

Isolation and Characterization of Human scFv Molecules Specific for Recombinant Human Heat Shock Protein (HSP) 70.1

  • Baek, Hyun-jung;Lee, Jae-seon;Seo, Jeong-sun;Cha, Sang-hoon
    • IMMUNE NETWORK
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    • v.4 no.1
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    • pp.7-15
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    • 2004
  • Background: The heat shock proteins (HSPs) play an important role in cellular protection mechanisms against physical or chemical stresses. In this study scFv antibodies specific for human HSP70.1 were isolated from a semi-synthetic human scFv library with the ultimate goal of developing anti-HSP70.1 intracellular antibody (intrabody) that may offer an attractive alternative to gene targeting to study the function of the protein in cells. Methods: A semi-synthetic human scFv display library ($5{\times}10^{8}$ size) was constructed using pCANTAB-5E vector and the selection of the library against bacterially expressed recombinant human HSP70.1 was attempted by panning. Results: Three positive clones specific for recombinant HSP70.1 were identified. All three clones used $V_{H}$ subgroup III. On the other hand, $V_{L}$ of two clones belonged to the kappa light chain subgroup I, but the other utilized $V_{k}$ subgroup IV Interestingly, these scFv molecules specifically reacted to the recombinant HSP70.1, yet failed to recognize native HSP70 induced in U937 human monocytic cells by heat treatment. Conclusion: Our results indicated that affinity selection of an scFv phage display library using recombinant antigens produced in E. coli might not guarantee the isolation of scFv antibody molecules specific for a native form of the antigen. Therefore, the source of target antigens needs to be chosen carefully in order to isolate biofunctional antibody molecules.

Wavelet-based detection and classification of roof-corner pressure transients

  • Pettit, Chris L.;Jones, Nicholas P.;Ghanem, Roger
    • Wind and Structures
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    • v.3 no.3
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    • pp.159-175
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    • 2000
  • Many practical time series, including pressure signals measured on roof-corners of low-rise buildings in quartering winds, consist of relatively quiescent periods interrupted by intermittent transients. The dyadic wavelet transform is used to detect these transients in pressure time series and a relatively simple pattern classification scheme is used to detect underlying structure in these transients. Statistical analysis of the resulting pattern classes yields a library of signal "building blocks", which are useful for detailed characterization of transients inherent to the signals being analyzed.

A study on the characterization of the journal of library and information science (문헌정보학 관련학회지의 성격규명에 관한 연구)

  • Chang, Woo-Kwon
    • Proceedings of the Korean Society for Information Management Conference
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    • 2016.08a
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    • pp.29-33
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    • 2016
  • 이 연구는 문헌정보학 관련학회지의 성격규명을 위한 것이다. 문헌정보학 관련 정보관리학회지, 문헌정보학회지, 한국도서관 정보학회지, 한국비블리아학회지, 한국기록관리학회지 등의 각 학회지의 논문 투고규정을 조사하여 학문영역과 학회지의 특성을 비교한다.

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Cloning. Sequencing and Characterization of the Urease Gene Cluster of the Streptococcus vestibularis

  • Kim, Geun-Y.;Lee, Mann-H.
    • Proceedings of the PSK Conference
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    • 2002.10a
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    • pp.332.1-332.1
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    • 2002
  • Streptococcus vestibularis is a urease-producing oral bacterium. frequently isolated from vestibular mucosa of human oral cavity. Ureolysis by S. vestibularis and other ureolytic oral bacteria is believed to be crucially involved in oral microbial ecology and oral health. Genomic library of the S. vestibularis ATCC49124 was constructed in an E. coli plasmid vector and the urease-positive transformants harboring the urease gene cluster were isolated on Christensen-urea agar plates. The minimal DNA region required for the urease activity was located on a 5.6 kb DNA fragment. (omitted)

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Generation of Testability on High Density /Speed ATM MCM and Its Library Build-up using BCB Thin Film Substrate (고속/고집적 ATM Switching MCM 구현을 위한 설계 Library 구축 밀 시험성 확보)

  • 김승곤;지성근;우준환;임성완
    • Journal of the Microelectronics and Packaging Society
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    • v.6 no.2
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    • pp.37-43
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    • 1999
  • Modules of the system that requires large capacity and high-speed information processing are implemented in the form of MCM that allows high-speed data processing, high density circuit integration and widely applied to such fields as ATM, GPS and PCS. Hence we developed the ATM switching module that is consisted of three chips and 2.48 Gbps data throughput, in the form of 10 multi-layer by Cu/Photo-BCB and 491pin PBGA which size is $48 \times 48 \textrm {mm}^2$. hnologies required for the development of the MCM includes extracting parameters for designing the substrate/package through the interconnect characterization to implement the high-speed characteristics, thermal management at the high-density MCM, and the generation of the testability that is one of the most difficult issues for developing the MCM. For the development of the ATM Switching MCM, we extracted signaling delay, via characteristics and crosstalk parameters through the interconnect characterization on the MCM-D. For the thermal management of 15.6 Watt under the high-density structure, we carried out the thermal analysis. formed 1.108 thermal vias through the substrate, and performed heat-proofing processing for the entire package so that it can keep the temperature less than $85^{\circ}C$. Lastly, in order to ensure the testability, we verified the substrate through fine pitch probing and applied the Boundary Scan Test (BST) for verifying the complex packaging/assembling processes, through which we developed an efficient and cost-effective product.

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Identification of Spilled Oils in the Marine Environment by Fluorescence Fingerprints and Library Search System (해양유출유의 형광지문에 의한 식별연구)

  • PARK, YONG-CHUL;KIM, YOUNG-HEE;LEE, CHANG-SUP;LEE, KI-BOCK
    • 한국해양학회지
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    • v.26 no.4
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    • pp.295-303
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    • 1991
  • Multi-spectral analyses of excitation and emission fluorescence was applied to spilled crude oils in characterization of their specific fluorescence patterns which is called oil fingerprints. In the present study, oil fingerprints of 33 crude, 4 fuel and 2 other oils were analyzed to establish data base library search system. Cluster analysis showed that crude oils could be classified into two large groups according to their fluorescence characteristics. In simulated experiments, all the spilled sources was identifiable by the present library search system. In the natural environment this system could identify the exact source of weathered crude oil slicks upton 10 days. The present study shows that the fluorescence fingerprinting method with the library search system is reliable and superior to toutine GC/HPLC analyses in identification of the source of weathered spilled oils in the marine environment.

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Cloning and Characterization of Novel Cytochrome P450 Hydroxylase Genes from Pseudonocardia autotrophica (Pseudonocardia autotrophica 유래의 신규 Cytochrome Cytochrome P450 Hydroxylase 유전자의 분리 및 염기서열 특성규명)

  • Myeong Ji Seon;Park Hyun-Joo;Han Kyuboem;Kim Sang-Nyun;Kim Eung-Soo
    • Korean Journal of Microbiology
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    • v.40 no.3
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    • pp.221-225
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    • 2004
  • Novel cytochrome P450 hydroxylase (CYP) genes were isolated and characterized from P. autotrophica cosmid DNA library using an actinomycete CYP-specific PCR product as a screening probe. The cosmids containing four unique CYP genes (pESK601, 602, 603, 604, 605) were identified, and the four CYP genes were completely sequenced to be homologous to other known Actinomycetes CYP genes involved in various secondary metabolic pathways. Among all novel actinomycete CYP genes found in P. autotrophica, the CYP genes present in pESK601 were revealed to be highly homologous to the CYP genes involved in polyene-type amphotericin and nystatin antibiotic biosynthesis. The nucleotide sequences of the CYP flanking region in pESK601 also revealed the polyene-type biosynthetic genes, implying the presence of a cryptic polyene-type antifungal biosynthetic gene cluster in P. autotrophica.

Effect of the new photoatomic data library EPDL2017 to mass attenuation coefficient calculation of materials used in the nuclear medicine facilities using EpiXS software

  • Jecong, J.F.M.;Hila, F.C.;Balderas, C.V.;Guillermo, N.R.D.
    • Nuclear Engineering and Technology
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    • v.54 no.9
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    • pp.3440-3447
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    • 2022
  • The accuracy of the photoatomic cross-section data is of great importance in the field of radiation protection, particularly in the characterization of radiation shielding materials. With the release of the latest and probably the most accurate photoatomic data library, EPDL2017, the need to re-evaluate all the existing and already established mass attenuation coefficients (MACs) of all radiation shielding materials arises. The MACs of several polymers, alloy-based, glasses, and building materials used in a nuclear medicine facility were investigated using the EPDL2017 library embedded in EpiXS software and were compared to MACs available in the literature. The relative differences between MACEpiXS and MACXCOM were negligible, ranging from 0.02% to 0.36% for most materials. However, for material like a glass comprising of elements Te and La evaluated near their corresponding K-edge energies, the relative differences in MACs increased up to 1.46%. On the other hand, a comparison with MACs calculated based on EPDL97 (a predecessor of EPDL2017) revealed as much as a 6.61% difference. Also, it would seem that the changes in MACs were more evident in the materials composed of high atomic number elements evaluated at x-ray energies compared to materials composed of low atomic number elements evaluated at gamma-ray energies.

Construction and Characterization of a cDNA Library from the Camelina sativa L. as an Alternative Oil-Seed Crop (신 바이오디젤 원료 작물인 Camelina의 cDNA library 제작 및 유전자 특성)

  • Park, Won;Jang, Young-Seok;Ahn, Sung-Ju
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.55 no.2
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    • pp.151-158
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    • 2010
  • Camelina sativa L., known as popular names "gold-of-pleasure" or "false flax" is an alternative oilseed crop that can be grown under different climatic and soil conditions. Up to date, however, the genomic information of Camelina has not been studied in detail. Therefore, a cDNA library was constructed and characterized from young leaves. The constructed cDNA library incorporated of 1334 cDNA clones and the size of the insertion fragments average was 736 base pair. We generated a total of 1269 high-quality expressed sequence tags (ESTs) sequences. The result of cluster analysis of EST sequences showed that the number of unigene was 851. According to subsequent analysis, the 476 (55.9%) unigenes were highly homologous to known function genes and the other 375 (44.1%) unigenes were unknown. Remaining 63 (7.4%) unigenes had no homology with any other peptide in NCBI database, indicating that these seemed to be novel genes expressed in leaves of Camelina. The database-matched ESTs were further classified into 17 categories according to their functional annotation. The most abundant of categories were "protein with binding function or cofactor requirement (27%)", "metabolism (11%)", "subcellular localization (11%)", "cellular transport, transport facilities and transport routes (7%)", "energy (6%)", "regulation of metabolism and protein function (6%)". Our result in this study provides an overview of mRNA expression profile and a basal genetic information of Camelina as an oilseed crop.