Yi Zhang

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Peng Yang67
Quan-yi Wang66
Hui Li62
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Charles W. Emala49
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Galaxy: a platform for interactive large-scale genome analysis.
Accessing and analyzing the exponentially expanding genomic sequence and functional data pose a challenge for biomedical researchers. Here we describe an interactive system, Galaxy, that combines the power of existing genome annotation databases with a simple Web portal to enable users to search remote resources, combine data from independent queries, and… (More)
Entropy-based Subspace Clustering for Mining Numerical Data
Mining numerical data is a relatively diicult problem in data mining. Clustering is one of the techniques. We consider a database with numerical attributes, in which each transaction is viewed as a multi-dimensional vector. By studying the clusters formed by these vectors, we can discover certain behaviors hidden in the data. Traditional clustering… (More)
Call admission control schemes and performance analysis in wireless mobile networks
—Call admission control (CAC) plays a significant role in providing the desired quality of service in wireless networks. Many CAC schemes have been proposed. Analytical results for some performance metrics such as call blocking probabilities are obtained under some specific assumptions. It is observed, however, that due to the mobility, some assumptions may… (More)
Neural origin of spontaneous hemodynamic fluctuations in rats under burst-suppression anesthesia condition.
Spontaneous hemodynamic signals fluctuate coherently within many resting-brain functional networks not only in awake humans and lightly anesthetized primates but also in animals under deep anesthesia characterized by burst-suppression electroencephalogram (EEG) activity and unconsciousness. To understand the neural origin of spontaneous hemodynamic… (More)
Genome sequence of the Brown Norway rat yields insights into mammalian evolution.
The laboratory rat (Rattus norvegicus) is an indispensable tool in experimental medicine and drug development, having made inestimable contributions to human health. We report here the genome sequence of the Brown Norway (BN) rat strain. The sequence represents a high-quality 'draft' covering over 90% of the genome. The BN rat sequence is the third complete… (More)
New Nomenclature for Chromatin-Modifying Enzymes
In the last ten years, the importance of chromatin modifications in many aspects of biology has become apparent. Several families of enzymes that modify histones have been identified, the majority of which are conserved throughout evolution. The enormous interest in this field has resulted in a very rapid rate of discovery of new enzymes, but this in turn… (More)
Energy Efficiency in Telecom Optical Networks
—Since the energy crisis and environmental protection are gaining increasing concerns in recent years, new research topics to devise technological solutions for energy conservation are being investigated in many scientific disciplines. Specifically, due to the rapid growth of energy consumption in ICT (Information and Communication Technologies), lot of… (More)
Steganalysis of Adaptive JPEG Steganography Using 2D Gabor Filters
Adaptive JPEG steganographic schemes are difficult to preserve the image texture features in all scales and orientations when the embedding changes are constrained to the complicated texture regions, then a steganalysis feature extraction method is proposed based on 2 dimensional (2D) Gabor filters. The 2D Gabor filters have certain optimal joint… (More)
The mTOR-regulated phosphoproteome reveals a mechanism of mTORC1-mediated inhibition of growth factor signaling.
The mammalian target of rapamycin (mTOR) protein kinase is a master growth promoter that nucleates two complexes, mTORC1 and mTORC2. Despite the diverse processes controlled by mTOR, few substrates are known. We defined the mTOR-regulated phosphoproteome by quantitative mass spectrometry and characterized the primary sequence motif specificity of mTOR using… (More)
Bre1, an E3 ubiquitin ligase required for recruitment and substrate selection of Rad6 at a promoter.
Ubiquitination of histone H2B catalyzed by Rad6 is required for methylation of histone H3 by COMPASS. We identified Bre1 as the probable E3 for Rad6's role in transcription. Bre1 contains a C3HC4 (RING) finger and is present with Rad6 in a complex. The RING finger of Bre1 is required for ubiquitination of histone H2B, methylation of lysine 4 and 79 of H3… (More)