Nucleic Acids Research, 2000, Vol. 28, No. 1 316-319
© 2000 Oxford University Press
TRANSFAC: an integrated system for gene expression regulation
1Gesellschaft für Biotechnologische Forschung mbH, Mascheroder Weg 1, D-38124 Braunschweig, Germany, 2The National Laboratory of Protein Engineering and Plant Genetic Engineering, College of Life Sciences, Peking University, Beijing 100871, People’s Republic of China, 3Technische Universität Braunschweig, Biozentrum, D-39100 Braunschweig, Germany and 4BIOBASE GmbH, Mascheroder Weg 1B, D-38124 Braunschweig, Germany
Received September 30, 1999; Accepted October 7, 1999.
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ABSTRACT |
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 TOP ABSTRACT INTRODUCTIONTHE TRANSFAC DATABASEPathoDBS/MARt DBTRANSPATHCYTOMER(R)AVAILABILITYREFERENCES |
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TRANSFAC is a database on transcription factors, their genomic binding sites and DNA-binding profiles (http://transfac.gbf.de/TRANSFAC/ ). Its content has been enhanced, in particular by information about training sequences used for the construction of nucleotide matrices as well as by data on plant sites and factors. Moreover, TRANSFAC has been extended by two new modules: PathoDB provides data on pathologically relevant mutations in regulatory regions and transcription factor genes, whereas S/MARt DB compiles features of scaffold/matrix attached regions (S/MARs) and the proteins binding to them. Additionally, the databases TRANSPATH, about signal transduction, and CYTOMER, about organs and cell types, have been extended and are increasingly integrated with the TRANSFAC data sources.
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INTRODUCTION |
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TOPABSTRACTINTRODUCTIONTHE TRANSFAC DATABASEPathoDBS/MARt DBTRANSPATHCYTOMER(R)AVAILABILITYREFERENCES |
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Gene regulation is still a major issue of molecular biology, and several new methodologies enable us to globally characterize gene expression patterns and profiles at a phenomenological level. However, the number of organs/cell types, developmental stages and conditional factors is so huge that we cannot expect all combinations of them to be exhaustively characterized by specific experimental setups. Therefore, there is a great need for comprehensive tools for the in silico identification of genomic signals that govern gene regulation events, and this requirement increases with the number of genomes that have been sequenced completely and are now to be exploited for biotechnological, pharmaceutical, agricultural or other purposes.
For these reasons, more than a decade ago we began to compile information about cis-regulatory DNA sequences and trans-acting factors (1). This compilation was transferred into a computer-readable format and released as an EMBL-like ASCII flat-file for public use as TRANSFAC database (2). Since then, it has been reorganized as a hierarchical and, subsequently, a relational database (3,4), increasingly linked with other databases allowing its integration into DBGET (5) and SRS (6,7). A major breakthrough was achieved by linking it with TRRD (Transcription Regulatory Region Database) (8) and by connecting the database COMPEL on composite regulatory elements (9). Additional database modules have been developed more recently, devoted to signal transduction pathways and organs/cell types (10). In the present contribution, the status of these modules along with that of TRANSFAC will be outlined, and two additional TRANSFAC supplements will be described that provide data on pathologically relevant gene regulatory components (PathoDB) and on scaffold/matrix attached regions, S/MAR (S/MARt DB).
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THE TRANSFAC DATABASE |
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TOPABSTRACTINTRODUCTIONTHE TRANSFAC DATABASEPathoDBS/MARt DBTRANSPATHCYTOMER(R)AVAILABILITYREFERENCES |
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Content of TRANSFAC
The underlying relational database system internally comprises two main tables, SITE and FACTOR. Nearly all other tables (a total of 50 tables) are linked directly or indirectly to one or both (such as REFERENCES) of these two. Of particular importance is the MATRIX table which represents DNA binding profiles for individual or groups of transcription factors and, therefore, is properly linked to the FACTOR table. The data structure of the relational system has changed slightly in that an additional table has been introduced linking MATRIX entries with their corresponding training sequences. These sequences have been incorporated into the SITE table (10), and are now explicitly listed in the individual MATRIX entries of the flat-file version as well.
The total number of entries in the individual tables are summarized in Table 1. Special efforts have been undertaken to improve the data content for the plant kingdom. Thus, the number of plant FACTOR entries has been trebled, amounting now to 266 entries (as of September 1999). Comparing this figure to the 136 plant (Viridiplantae) entries of the SWISS-PROT database exhibiting the keyword ‘Transcription regulation’ may indicate a satisfying coverage rate. However, this comparison should consider that, on the one hand, TRANSFAC may apply slightly more restrictive criteria to include a protein as a ‘transcription factor’, but that, on the other hand, individual splice variants are represented in TRANSFAC as distinct entries, in contrast to SWISS-PROT; also, multimeric transcription factor complexes are described as own FACTOR entries in TRANSFAC, but of course not in SWISS-PROT.
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The volume of binding sites for plant transcription factors in the SITE table has been more than doubled, now comprising 104 genomic and 208 artificial binding sites. The latter come mostly from random selection studies to identify the DNA-binding specificity of individual factors and are used to generate binding profiles. Correspondingly, the number of plant transcription factor binding profiles in the MATRIX table has been more than doubled (from 8 to 19 matrices; status as of September 1999). These matrices, together with a total of 18 consensus strings stored in the SITE table, can serve as a basis to identify potential plant transcription factor binding sites in genomic sequences using the search routines provided by the TRANSFAC server (see below). In addition to this more quantitative increase, we paid specific attention to improve the quality of the individual entries since part of this information is used by other databases as well (11).
Cross-links with other databases
The links to the previously listed external databases have been maintained and extended. Links between the CELL table and HyperCLDB (Cell Line Data Base; http://www.biotech.ist. unige.it/cldb/indexes.html ), a general collection of information about cell lines comprising data of the American Type Culture Collection (ATCC), the German Collection of Microorganisms and Cell Cultures (DSMZ), and seven additional sources have been newly introduced. Up to now, the URLs of CLDB have been included directly in the commentary/description field of 154 CELL entries. Presently, attempts are being made to include links to GeneCard into the GENE table. To facilitate linking of transcription factor entries to their corresponding genes in GeneCard, all transcription factor genes will be included in the GENE table of TRANSFAC, even if no transcription factor binding sites in their regulatory regions have been described yet.
Classification of transcription factors
Presently (last update May 1999), the overall classification scheme for transcription factors provides links to 1160 factors, embedded in a system of 1321 taxa (see refs 10,12 for a more detailed description). Recent changes comprise the introduction of APETALA2/EREBP-related factors and Dof (DNA-binding with One Finger) factors from plants as new classes.
Connected tools
As has already been described, TRANSFAC data are used by two programs that scan DNA sequences for potential transcription factor binding sites. PatSearch uses the sequence information of the SITE table grouped into six libraries: genomic sites from vertebrates, insects, plants, fungi, consensus strings in the 15-letter IUPAC code, or site information from TRRD, whereas MatInspector (13) works with compiled libraries of binding profiles (for factors from vertebrates, insects, plants, fungi or miscellaneous organisms) which is derived mainly from the TRANSFAC MATRIX table. Likewise, the FastM module developed by Frech et al. (14) uses the same matrix libraries while searching for user-defined combinations of transcription factor binding sites. As a new functionality, the output list of MatInspector can be used to suggest expression patterns of the gene analyzed (see below, CYTOMER).
Another program (S_Comp 1.0) designed to specifically detect composite elements of the NFAT type has been made available on the TRANSFAC server and has been described in greater detail elsewhere (http://transfac.gbf.de/dbsearch/funsitep/s_comp.html ) (15).
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PathoDB |
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TOPABSTRACTINTRODUCTIONTHE TRANSFAC DATABASEPathoDBS/MARt DBTRANSPATHCYTOMER(R)AVAILABILITYREFERENCES |
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Numerous cases have been published showing that defective transcription factors or transcription factor binding sites lead to pathological defects because normal gene regulation is impaired. It is the aim of the newly developed database PathoDB to collect such data on mutated factors and binding sites. Moreover, the underlying genetic defects and the resulting diseases are considered as well. PathoDB is intended to be an extension of the TRANSFAC database system concerning the pathological aspects of transcriptional regulation.
Structure of the database
PathoDB is a relational database, consisting of 50 linked tables. The database schema was designed with respect to the various interdependencies of entry types. For instance, one mutated gene may encode several mutated proteins due to alternative splicing, and a certain genotype may cause distinct phenotypes depending on ploidity. On the other hand, different genotypes can cause the same pathological phenotype by knocking out the same gene through distinct mechanisms.
The database is composed of 10 main tables and another 40 link tables. The four most important tables contain data about mutated transcription factors (MuFactor), mutated DNA binding sites (MuSite), molecular gene structures (Genotype) and regulatory disorders (Phenotype). In order to access data beyond PathoDB’s primary focus, the Phenotype and Genotype entries are connected to important external databases like OMIM (http://www.ncbi.nlm.nih.gov/omim/ ) (16), MGI (http://www.informatics.jax.org/ ) (17) and HGMD (http://www.uwcm. ac.uk/uwcm/mg/hgmd0.html? ) (18).
Current content and perspective
Presently, the prototype of PathoDB contains detailed information on 80 mutated transcription factors and 20 mutated binding sites (each with a link to the wild-type specified in TRANSFAC), ~100 genotypes and 15 phenotypes of specific diseases. In the current state, mainly developmental defects are considered. In the case of factors, for example, both the mutated pituitary-specific positive transcription factor 1 (Pit-1) and the mutated Prophet of Pit-1 (PROP1) lead to impaired pituitary development (19,20), and the mutated paired-box proteins 3 and 8 (Pax-3, Pax-8) cause early neural tube defects or congenital hypothyroidism, respectively (21,22).
The range of organisms admitted to PathoDB is planned to be nearly as broad as it is in TRANSFAC. However, at the moment only human and murine defects are considered, with special emphasis on the human organism whose genetic diseases might be of greatest interest for medical research. In particular, the wide cancer field will be regarded. The database will soon be accessible via the Internet as a flat-file version.
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S/MARt DB |
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TOPABSTRACTINTRODUCTIONTHE TRANSFAC DATABASEPathoDBS/MARt DBTRANSPATHCYTOMER(R)AVAILABILITYREFERENCES |
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Transcriptional activation of eukaryotic genes is associated with significant changes in chromatin structure. The main change is the transition from a condensed to an ‘open’ or ‘active’ structure. It has been suggested that the nuclear matrix may play a role in gene potentiation as well as in genome organization. These functions are believed to be mediated by scaffold or matrix attached regions (S/MARs). Therefore we developed a new database, S/MARt DB (scaffold/matrix attached region transaction database), which is closely linked to TRANSFAC. This database collects information about S/MARs and the nuclear matrix proteins that are supposed to be involved in the interaction of these elements with the nuclear matrix. S/MARt DB is publicly available through the WWW at http://transfac.gbf.de/SMARtDB/index.html . A detailed description of S/MARt DB is the subject of another publication (Liebich,I., Bode,J., Frisch,M., Reuter,I. and Wingender,E., manuscript in preparation).
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TRANSPATH |
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TOPABSTRACTINTRODUCTIONTHE TRANSFAC DATABASEPathoDBS/MARt DBTRANSPATHCYTOMER(R)AVAILABILITYREFERENCES |
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TRANSPATH (http://transfac.gbf.de/TRANSPATH/ ) focuses on signal transduction networks involved in the regulation of transcription factors and aims at furnishing a collection of data usable for simulation of network dynamics. In our model the signaling network is composed of components like receptors, enzymes, transcription factors and genes, all of which are connected through reactions. While mechanistic reactions represent the minute physical interactions between components needed for simulation, semantic reactions portray the flow of meaning, like ‘activation’, as usually shown in the literature. Components can be clustered together in families which show similar signaling behavior to reduce the level of redundancy. Reactions can be clustered into pathways. For any signaling component the user can search an interactive graphical tree representation of the connected pathways. The search can take family information into account to broaden the result range. TRANSPATH was developed with a semantic dataset (1514 components and 827 reactions) taken from CSNDB (Cell Signaling Network Database) (23,24). Since we aim at a finer granularity of reactions to make simulation feasible, a second dataset retrieval has been started, which also includes mechanistic reactions (status as of September 1999, 120 components and 80 reactions on top of a set of 10 073 components imported from SWISS-PROT). Nevertheless, the TRANSPATH interface can also be used to view a subset of CSNDB data.
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CYTOMER® |
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TOPABSTRACTINTRODUCTIONTHE TRANSFAC DATABASEPathoDBS/MARt DBTRANSPATHCYTOMER(R)AVAILABILITYREFERENCES |
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The relational database CYTOMER comprises tables for human organs, cell types, physiological systems and developmental stages (10). The organ table is in itself hierarchically structured, since to each anatomical structure listed, the parent (sub-)organ is indicated as an additional attribute. All four tables are linked through a central ‘Hub’ table that lists the biologically meaningful combinations of these four categories. This table can provide a general framework to map expression patterns (Chen,X., Dress,A. and Wingender,E., manuscript in preparation) which is used here to represent the expression patterns of human transcription factors, and to assemble expression profiles for selected organs with regard to the transcription factors they express. The expression patterns of individual transcription factors can be called from those TRANSFAC FACTOR entries that contain information about expression and non-expression sources within the CP and/or CN line, respectively.
Starting with a list of transcription factors, their expression patterns can be exhibited in a comparative manner to evaluate visually in which organs all or most of them may be expressed. Using this function, an output list such as that generated by MatInspector (see above) will be used to optionally display a table with expression patterns of the potential regulators of the analyzed gene and, thus, suggesting a possible expression pattern of this gene itself.
Using the mouse vocabulary established by Kaufman (25) and implemented with the Gene Expression Database (GXD) (26), the CYTOMER database will be extended to the mouse system and, in the near future, to other intensely studied ‘model’ organisms as well.
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AVAILABILITY |
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TOPABSTRACTINTRODUCTIONTHE TRANSFAC DATABASEPathoDBS/MARt DBTRANSPATHCYTOMER(R)AVAILABILITYREFERENCES |
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TRANSFAC as well as the other data resources mentioned in this paper are freely available to users from non-profit organizations under http://transfac.gbf.de/TRANSFAC/ and at a number of mirror sites. Users from commercial organizations are requested to license database versions with user interfaces of enhanced functionality and with a data set that has been enlarged mainly by additional data on artificial binding sites and transcription factor DNA-binding profiles. Of course, academic institutions can also license this version.
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ACKNOWLEDGEMENTS |
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The authors are indebted to M. Ashburner (EBI) for regularly providing the links to FlyBase. We also gladly acknowledge the generous help granted by T. Takai-Igarashi and T. Kaminuma (National Institutes of Health Sciences, Tokyo) in supplying the data set of CSNDB. Finally, we express our gratitude to Mrs A. Bischoff for the technical help in nearly all the above-mentioned fields. Parts of this work were supported by the German Ministry of Education and Research (BMBF, grants no. 0311640 and 01 KW 9629/7), and by a Scientific-Technical cooperation grant of BMBF (CHN-305-97).
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FOOTNOTES |
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* To whom correspondence should be addressed. Tel: +49 531 6181 427; Fax: +49 531 6181 266; Email: ewi@gbf.de
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REFERENCES |
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TOPABSTRACTINTRODUCTIONTHE TRANSFAC DATABASEPathoDBS/MARt DBTRANSPATHCYTOMER(R)AVAILABILITYREFERENCES |
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X. Che, B. Berarducci, M. Sommer, W. T. Ruyechan, and A. M. Arvin The Ubiquitous Cellular Transcriptional Factor USF Targets the Varicella-Zoster Virus Open Reading Frame 10 Promoter and Determines Virulence in Human Skin Xenografts in SCIDhu Mice In Vivo J. Virol., April 1, 2007; 81(7): 3229 - 3239. [Abstract] [Full Text] [PDF]
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G. Finocchiaro, M. S. Carro, S. Francois, P. Parise, V. DiNinni, and H. Muller Localizing hotspots of antisense transcription Nucleic Acids Res., March 12, 2007; 35(5): 1488 - 1500. [Abstract] [Full Text] [PDF]
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L. A. Pennacchio, G. G. Loots, M. A. Nobrega, and I. Ovcharenko Predicting tissue-specific enhancers in the human genome Genome Res., February 1, 2007; 17(2): 201 - 211. [Abstract] [Full Text] [PDF]
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S. Patel, Z. F. Xi, E. Y. Seo, D. McGaughey, and J. A. Segre Klf4 and corticosteroids activate an overlapping set of transcriptional targets to accelerate in utero epidermal barrier acquisition PNAS, December 5, 2006; 103(49): 18668 - 18673. [Abstract] [Full Text] [PDF]
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V. X. Jin, A. Rabinovich, S. L. Squazzo, R. Green, and P. J. Farnham A computational genomics approach to identify cis-regulatory modules from chromatin immunoprecipitation microarray data--A case study using E2F1 Genome Res., December 1, 2006; 16(12): 1585 - 1595. [Abstract] [Full Text] [PDF]
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K. I. Zeller, X. Zhao, C. W. H. Lee, K. P. Chiu, F. Yao, J. T. Yustein, H. S. Ooi, Y. L. Orlov, A. Shahab, H. C. Yong, et al. Global mapping of c-Myc binding sites and target gene networks in human B cells PNAS, November 21, 2006; 103(47): 17834 - 17839. [Abstract] [Full Text] [PDF]
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X. Yu, J. Lin, D. J. Zack, and J. Qian Computational analysis of tissue-specific combinatorial gene regulation: predicting interaction between transcription factors in human tissues Nucleic Acids Res., October 18, 2006; 34(17): 4925 - 4936. [Abstract] [Full Text] [PDF]
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N. Carayol, J. Chen, F. Yang, T. Jin, L. Jin, D. States, and C.-Y. Wang A Dominant Function of IKK/NF-{kappa}B Signaling in Global Lipopolysaccharide-induced Gene Expression J. Biol. Chem., October 13, 2006; 281(41): 31142 - 31151. [Abstract] [Full Text] [PDF]
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F. Al-Shahrour, P. Minguez, J. Tarraga, D. Montaner, E. Alloza, J. M. Vaquerizas, L. Conde, C. Blaschke, J. Vera, and J. Dopazo BABELOMICS: a systems biology perspective in the functional annotation of genome-scale experiments. Nucleic Acids Res., July 1, 2006; 34(Web Server issue): W472 - W476. [Abstract] [Full Text] [PDF]
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L. Conde, J. M. Vaquerizas, H. Dopazo, L. Arbiza, J. Reumers, F. Rousseau, J. Schymkowitz, and J. Dopazo PupaSuite: finding functional single nucleotide polymorphisms for large-scale genotyping purposes. Nucleic Acids Res., July 1, 2006; 34(Web Server issue): W621 - W625. [Abstract] [Full Text] [PDF]
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S. De Bodt, G. Theissen, and Y. Van de Peer Promoter Analysis of MADS-Box Genes in Eudicots Through Phylogenetic Footprinting Mol. Biol. Evol., June 1, 2006; 23(6): 1293 - 1303. [Abstract] [Full Text] [PDF]
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A. Carson and S. A. Khan Characterization of Transcription Factor Binding to Human Papillomavirus Type 16 DNA during Cellular Differentiation J. Virol., May 1, 2006; 80(9): 4356 - 4362. [Abstract] [Full Text] [PDF]
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L. D. Norquay, X. Yang, Y. Jin, K. A. Detillieux, and P. A. Cattini Hepatocyte Nuclear Factor-3{alpha} Binding at P Sequences of the Human Growth Hormone Locus Is Associated with Pituitary Repressor Function Mol. Endocrinol., March 1, 2006; 20(3): 598 - 607. [Abstract] [Full Text] [PDF]
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X. Yu, J. Lin, T. Masuda, N. Esumi, D. J. Zack, and J. Qian Genome-wide prediction and characterization of interactions between transcription factors in Saccharomyces cerevisiae Nucleic Acids Res., February 6, 2006; 34(3): 917 - 927. [Abstract] [Full Text] [PDF]
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K. McGee-Estrada and H. Fan In Vivo and In Vitro Analysis of Factor Binding Sites in Jaagsiekte Sheep Retrovirus Long Terminal Repeat Enhancer Sequences: Roles of HNF-3, NF-I, and C/EBP for Activity in Lung Epithelial Cells J. Virol., January 1, 2006; 80(1): 332 - 341. [Abstract] [Full Text] [PDF]
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H. Sun, S. K. Palaniswamy, T. T. Pohar, V. X. Jin, T. H.-M. Huang, and R. V. Davuluri MPromDb: an integrated resource for annotation and visualization of mammalian gene promoters and ChIP-chip experimental data Nucleic Acids Res., January 1, 2006; 34(suppl_1): D98 - D103. [Abstract] [Full Text] [PDF]
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L. Yu, P. M. Haverty, J. Mariani, Y. Wang, H.-Y. Shen, M. A. Schwarzschild, Z. Weng, and J.-F. Chen Genetic and pharmacological inactivation of adenosine A2A receptor reveals an Egr-2-mediated transcriptional regulatory network in the mouse striatum Physiol Genomics, September 21, 2005; 23(1): 89 - 102. [Abstract] [Full Text] [PDF]
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P. de la Grange, M. Dutertre, N. Martin, and D. Auboeuf FAST DB: a website resource for the study of the expression regulation of human gene products Nucleic Acids Res., July 28, 2005; 33(13): 4276 - 4284. [Abstract] [Full Text] [PDF]
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S. Aerts, P. Van Loo, G. Thijs, H. Mayer, R. de Martin, Y. Moreau, and B. De Moor TOUCAN 2: the all-inclusive open source workbench for regulatory sequence analysis Nucleic Acids Res., July 1, 2005; 33(suppl_2): W393 - W396. [Abstract] [Full Text] [PDF]
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I. Ovcharenko and M. A. Nobrega Identifying synonymous regulatory elements in vertebrate genomes Nucleic Acids Res., July 1, 2005; 33(suppl_2): W403 - W407. [Abstract] [Full Text] [PDF]
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L. Conde, J. M. Vaquerizas, C. Ferrer-Costa, X. de la Cruz, M. Orozco, and J. Dopazo PupasView: a visual tool for selecting suitable SNPs, with putative pathological effect in genes, for genotyping purposes Nucleic Acids Res., July 1, 2005; 33(suppl_2): W501 - W505. [Abstract] [Full Text] [PDF]
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J. Qian, N. Esumi, Y. Chen, Q. Wang, I. Chowers, and D. J. Zack Identification of regulatory targets of tissue-specific transcription factors: application to retina-specific gene regulation Nucleic Acids Res., June 20, 2005; 33(11): 3479 - 3491. [Abstract] [Full Text] [PDF]
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T. R. Hvidsten, B. Wilczynski, A. Kryshtafovych, J. Tiuryn, J. Komorowski, and K. Fidelis Discovering regulatory binding-site modules using rule-based learning Genome Res., June 1, 2005; 15(6): 856 - 866. [Abstract] [Full Text] [PDF]
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I. Ben-Gal, A. Shani, A. Gohr, J. Grau, S. Arviv, A. Shmilovici, S. Posch, and I. Grosse Identification of transcription factor binding sites with variable-order Bayesian networks Bioinformatics, June 1, 2005; 21(11): 2657 - 2666. [Abstract] [Full Text] [PDF]
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B. Tian, D. E. Nowak, M. Jamaluddin, S. Wang, and A. R. Brasier Identification of Direct Genomic Targets Downstream of the Nuclear Factor-{kappa}B Transcription Factor Mediating Tumor Necrosis Factor Signaling J. Biol. Chem., April 29, 2005; 280(17): 17435 - 17448. [Abstract] [Full Text] [PDF]
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S. S. Vukkadapu, J. M. Belli, K. Ishii, A. G. Jegga, J. J. Hutton, B. J. Aronow, and J. D. Katz Dynamic interaction between T cell-mediated {beta}-cell damage and {beta}-cell repair in the run up to autoimmune diabetes of the NOD mouse Physiol Genomics, April 14, 2005; 21(2): 201 - 211. [Abstract] [Full Text] [PDF]
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K. Grote, U. Bavendiek, C. Grothusen, I. Flach, D. Hilfiker-Kleiner, H. Drexler, and B. Schieffer Stretch-inducible Expression of the Angiogenic Factor CCN1 in Vascular Smooth Muscle Cells Is Mediated by Egr-1 J. Biol. Chem., December 31, 2004; 279(53): 55675 - 55681. [Abstract] [Full Text] [PDF]
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V. X. Jin, Y.-W. Leu, S. Liyanarachchi, H. Sun, M. Fan, K. P. Nephew, T. H.-M. Huang, and R. V. Davuluri Identifying estrogen receptor {alpha} target genes using integrated computational genomics and chromatin immunoprecipitation microarray Nucleic Acids Res., December 17, 2004; 32(22): 6627 - 6635. [Abstract] [Full Text] [PDF]
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Y. Xu, S. A. Cei, A. Rodriguez Huete, K. S. Colletti, and G. S. Pari Human Cytomegalovirus DNA Replication Requires Transcriptional Activation via an IE2- and UL84-Responsive Bidirectional Promoter Element within oriLyt J. Virol., November 1, 2004; 78(21): 11664 - 11677. [Abstract] [Full Text] [PDF]
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M. Yang, J. Hay, and W. T. Ruyechan The DNA Element Controlling Expression of the Varicella-Zoster Virus Open Reading Frame 28 and 29 Genes Consists of Two Divergent Unidirectional Promoters Which Have a Common USF Site J. Virol., October 15, 2004; 78(20): 10939 - 10952. [Abstract] [Full Text] [PDF]
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D. N. Messina, J. Glasscock, W. Gish, and M. Lovett An ORFeome-based Analysis of Human Transcription Factor Genes and the Construction of a Microarray to Interrogate Their Expression Genome Res., October 1, 2004; 14(10b): 2041 - 2047. [Abstract] [Full Text] [PDF]
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R. J. Livingston, A. von Niederhausern, A. G. Jegga, D. C. Crawford, C. S. Carlson, M. J. Rieder, S. Gowrisankar, B. J. Aronow, R. B. Weiss, and D. A. Nickerson Pattern of Sequence Variation Across 213 Environmental Response Genes Genome Res., October 1, 2004; 14(10a): 1821 - 1831. [Abstract] [Full Text] [PDF]
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Y. V. Sun, D. R. Boverhof, L. D. Burgoon, M. R. Fielden, and T. R. Zacharewski Comparative analysis of dioxin response elements in human, mouse and rat genomic sequences Nucleic Acids Res., August 24, 2004; 32(15): 4512 - 4523. [Abstract] [Full Text] [PDF]
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A. Matyash, H.-R. Chung, and H. Jackle Genome-wide Mapping of in Vivo Targets of the Drosophila Transcription Factor Kruppel J. Biol. Chem., July 16, 2004; 279(29): 30689 - 30696. [Abstract] [Full Text] [PDF]
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P. M. Haverty, M. C. Frith, and Z. Weng CARRIE web service: automated transcriptional regulatory network inference and interactive analysis Nucleic Acids Res., July 1, 2004; 32(suppl_2): W213 - W216. [Abstract] [Full Text] [PDF]
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L. Conde, J. M. Vaquerizas, J. Santoyo, F. Al-Shahrour, S. Ruiz-Llorente, M. Robledo, and J. Dopazo PupaSNP Finder: a web tool for finding SNPs with putative effect at transcriptional level Nucleic Acids Res., July 1, 2004; 32(suppl_2): W242 - W248. [Abstract] [Full Text] [PDF]
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J.-V. Chamary and L. D. Hurst Similar Rates but Different Modes of Sequence Evolution in Introns and at Exonic Silent Sites in Rodents: Evidence for Selectively Driven Codon Usage Mol. Biol. Evol., June 1, 2004; 21(6): 1014 - 1023. [Abstract] [Full Text] [PDF]
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C. Ruiz-Ruiz, C. Ruiz de Almodovar, A. Rodriguez, G. Ortiz-Ferron, J. M. Redondo, and A. Lopez-Rivas The Up-regulation of Human Caspase-8 by Interferon-{gamma} in Breast Tumor Cells Requires the Induction and Action of the Transcription Factor Interferon Regulatory Factor-1 J. Biol. Chem., May 7, 2004; 279(19): 19712 - 19720. [Abstract] [Full Text] [PDF]
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