• 제목/요약/키워드: information biology

검색결과 1,488건 처리시간 0.034초

Year-in-Review of Lung Cancer

  • Son, Ji Woong
    • Tuberculosis and Respiratory Diseases
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    • 제73권3호
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    • pp.137-142
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    • 2012
  • In the last several years, we have made slow but steady progress in understanding molecular biology of lung cancer. This review is focused on advances in understanding the biology of lung cancer that have led to proof of concept studies on new therapeutic approaches. The three selected topics include genetics, epigenetics and non-coding RNA. This new information represents progress in the integration of molecular mechanisms that to identify more effective ways to target lung cancer.

Epigenetic aspects of telomeric chromatin in Arabidopsis thaliana

  • Lee, Won Kyung;Cho, Myeon Haeng
    • BMB Reports
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    • 제52권3호
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    • pp.175-180
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    • 2019
  • Telomeres are nucleoprotein complexes at the physical ends of linear eukaryotic chromosomes. They protect the chromosome ends from various external attacks to avoid the loss of genetic information. Telomeres are maintained by cellular activities associated with telomerase and telomere-binding proteins. In addition, epigenetic regulators have pivotal roles in controlling the chromatin state at telomeres and subtelomeric regions, contributing to the maintenance of chromosomal homeostasis in yeast, animals, and plants. Here, we review the recent findings on chromatin modifications possibly associated with the dynamic states of telomeres in Arabidopsis thaliana.

Sensitivity Enhancement of Methyl-TROSY by Longitudinal 1H Relaxation Optimization

  • Lee, Dong-Han;Vijayan, Vinesh;Montaville, Pierre;Becker, Stefan;Griesinger, Christian
    • 한국자기공명학회논문지
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    • 제13권1호
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    • pp.15-26
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    • 2009
  • The NMR detection of methyl groups is of keen interest because they provide the long-range distance information required to establish global folds of high molecular weight proteins. Using longitudinal $^1H$ relaxation optimization, we achieve a gain in sensitivity of approximately 1.6-fold in the methyl-TROSY and its NOESY experiments for the 38 kDa protein mitogen activated protein kinase p38 in its fully protonated and $^{13}C$ and $^{15}N$ labeled state.

RNA-Protein Interactions and Protein-Protein Interactions during Regulation of Eukaryotic Gene Expression

  • Varani, Luca;Ramos, Andres;Cole, Pual T.;Neuhaus, David;Varani, Gabriele
    • 한국자기공명학회논문지
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    • 제2권2호
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    • pp.152-157
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    • 1998
  • The diversity of RNA functions ranges from storage and propagation of genetic information to enzymatic activity during RNA processing and protein synthesis. This diversity of functions requires an equally diverse arrays of structures, and, very often, the formation of functional RNA-protein complexes. Recognition of specific RNA signals by RNA-binding proteins is central to all aspects of post-transcriptional regulation of gene expression. We will describe how NMR is being used to understand at the atomic level how these important biological processes occur.

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The Optimal Culture Conditions for the Mycelial Growth of Oudemansiella radicata

  • Kim, Sang-Beom;Kim, Seong-Hwan;Lee, Kyung-Rim;Shim, Jae-Ouk;Lee, Min-Woong;Shim, Mi-Ja;Lee, U-Youn;Lee, Tae-Soo
    • Mycobiology
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    • 제33권4호
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    • pp.230-234
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    • 2005
  • Oudemansiella radicata, one of edible mushrooms belonging to Tricholomataceae of Basidiomycota, has been known to exhibit outstanding therapeutic effects on the hypertension caused by high blood pressure and inhibitory effects on the sarcoma 180 and Erhrlich carcinoma of mice. As one of preliminary experiments for producing fruiting-body of O. radicata, this study was carried out to obtain the basic information for culture conditions of mycelial growth of the fungus. The optimal temperature and pH for the mycelial growth were $25^{\circ}C$ and pH 6, respectively. The medium for favorable mycelial growth of O. radicata was shown in the Lilly medium, whereas compact mycelial density was found in Hamada medium. The carbon and nitrogen sources promoting for mycelial growth of O. radicata were xylose and alanine, respectively. The optimum C/N ratio was about 20 : 1 in case that 3% glucose was supplimented to the basal medium as a carbon source.

Microsatellite analysis of 20 mulberry varieties preserved in Korea

  • Chan Young, Jeong;Sang Kuk, Kang;Nam-Suk, Kim;Ik Seob, Cha;Seong-Wan, Kim;Jong Woo, Park;Kee-Young, Kim
    • International Journal of Industrial Entomology and Biomaterials
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    • 제45권2호
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    • pp.49-55
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    • 2022
  • A total of 20 mulberry varieties preserved in Korea were typed for eight polymorphic microsatellite loci. We obtained 6 to 15 alleles per locus with an average value of 10.6, per-locus observed heterozygosity ranging from 0.35 to 1.00, and per-locus polymorphic information content (PIC) ranging from 0.61 to 0.87, indicating that most loci are highly variable. Phylogenetic analysis using the eight microsatellite loci was sufficiently suitable for classifying 20 mulberry varieties preserved in Korea. A total of 160 variety-specific apomorphic alleles were obtained from eight loci discriminated 20 mulberry varieties. These variety-specific alleles from this analysis are expected to be useful for the discrimination of other mulberry varieties. Furthermore, a substantial number of homozygote loci, represented by 60 among 180 alleles in eight loci were found. These results collectively suggest that these microsatellite locus primers are potentially crucial molecular markers for the eventual classification of mulberry varieties that are preserved as hundreds in Korea.

Recent Progress of Structural Biology of tRNA Processing and Modification

  • Nakanishi, Kotaro;Nureki, Osamu
    • Molecules and Cells
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    • 제19권2호
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    • pp.157-166
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    • 2005
  • Transfer RNA (tRNA) is a key molecule to decode the genetic information on mRNA to amino aicds (protein), in a ribosome. For tRNA to fulfill its adopter function, tRNA should be processed into the standard length, and be post-transcriptionally modified. This modification step is essential for the tRNA to maintain the canonical L-shaped structure, which is required for the decoding function of tRNA. Otherwise, it has recently been proposed that modification procedure itself contributes to the RNA (re)folding, where the modification enzymes function as a kind of RNA chaperones. Recent genome analyses and post-genome (proteomics and transcriptomics) analyses have identified genes involved in the tRNA processings and modifications. Furthermore, post-genomic structural analysis has elucidated the structural basis for the tRNA maturation mechanism. In this paper, the recent progress of the structural biology of the tRNA processing and modification is reviewed.

Data-Compression-Based Resource Management in Cloud Computing for Biology and Medicine

  • Zhu, Changming
    • Journal of Computing Science and Engineering
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    • 제10권1호
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    • pp.21-31
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    • 2016
  • With the application and development of biomedical techniques such as next-generation sequencing, mass spectrometry, and medical imaging, the amount of biomedical data have been growing explosively. In terms of processing such data, we face the problems surrounding big data, highly intensive computation, and high dimensionality data. Fortunately, cloud computing represents significant advantages of resource allocation, data storage, computation, and sharing and offers a solution to solve big data problems of biomedical research. In order to improve the efficiency of resource management in cloud computing, this paper proposes a clustering method and adopts Radial Basis Function in order to compress comprehensive data sets found in biology and medicine in high quality, and stores these data with resource management in cloud computing. Experiments have validated that with such a data-compression-based resource management in cloud computing, one can store large data sets from biology and medicine in fewer capacities. Furthermore, with reverse operation of the Radial Basis Function, these compressed data can be reconstructed with high accuracy.