[Bank of samples from the Prof_Pat protein family, assessment of efficacy]. / Bank obrazov belkovykh semeistv PROF_PAT, otsenka éffektivnosti.

The PROF_PAT protein pattern database has been created and maintained so as to comprise the maximal number of the SWISS-PROT + TrEMBL proteins as patterns. The present paper describes some characteristic features of PROF_PAT to assist the potential user. New amino acid sequences (10938) from the SWISS-PROT database have been analyzed to determine the boundary values of the "score" parameter to distinguish random and significant similarities. Analysis through the Internet of 20 amino acid sequences having no descriptions in the TrEMBL database demonstrated that PROF_PAT, being highly competitive with its counterparts in specificity, surpasses them in amplitude and variety of proteins, working several times as fast. The real representation of protein families in the PROF_PAT database (release 1.11), which contains 50,149 patterns of 344,429 proteins, has been estimated at 31,450.

Transcription Regulatory Regions Database (TRRD): its status in 2002.

Transcription Regulatory Regions Database (TRRD) is an informational resource containing an integrated description of the gene transcription regulation. An entry of the database corresponds to a gene and contains the data on localization and functions of the transcription regulatory regions as well as gene expression patterns. TRRD contains only experimental data that are inputted into the database through annotating scientific publication. TRRD release 6.0 comprises the information on 1167 genes, 5537 transcription factor binding sites, 1714 regulatory regions, 14 locus control regions and 5335 expression patterns obtained through annotating 3898 scientific papers. This information is arranged in seven databases: TRRDGENES (general gene description), TRRDLCR (locus control regions); TRRDUNITS (regulatory regions: promoters, enhancers, silencers, etc.), TRRDSITES (transcription factor binding sites), TRRDFACTORS (transcription factors), TRRDEXP (expression patterns) and TRRDBIB (experimental publications). Sequence Retrieval System (SRS) is used as a basic tool for navigating and searching TRRD and integrating it with external informational and software resources. The visualization tool, TRRD Viewer, provides the information representation in a form of maps of gene regulatory regions. The option allowing nucleotide sequences to be searched for according to their homology using BLAST is also included. TRRD is available at http://www.bionet.nsc.ru/trrd/.

[Regulation of eukaryotic gene transcription: description in the TRRD database]. / Reguliatsiia transkriptsii genov éukariot: opisanie v baze dannykh TRDD.

The structure of the Transcription Regulatory Regions Database (TRRD) and the principles of considering transcription regulation of eukaryotic genes in TRRD are concerned. Formal description of the structural and functional organization of the regulatory gene regions is illustrated with examples. By now, TRRD is based on 3500 original works and contains data on transcription regulation of more than 1100 genes known to possess more than 5000 transcription factor-binding sites and about 1600 regulatory elements (promoters, enhancers, silencers). TRRD is available at http://www.bionet.nsc.ru/trrd/.

PROF_ PAT 1.3: updated database of patterns used to detect local similarities.

MOTIVATION: When analysing novel protein sequences, it is now essential to extend search strategies to include a range of 'secondary' databases. Pattern databases have become vital tools for identifying distant relationships in sequences, and hence for predicting protein function and structure. The main drawback of such methods is the relatively small representation of proteins in trial samples at the time of their construction. Therefore, a negative result of an amino acid sequence comparison with such a databank forces a researcher to search for similarities in the original protein banks. We developed a database of patterns constructed for groups of related proteins with maximum representation of amino acid sequences of SWISS-PROT in the groups. RESULTS: Software tools and a new method have been designed to construct patterns of protein families. By using such method, a new version of databank of protein family patterns, PROF_ PAT 1.3, is produced. This bank is based on SWISS-PROT (r1.38) and TrEMBL (r1.11), and contains patterns of more than 13 000 groups of related proteins in a format similar to that of the PROSITE. Motifs of patterns, which had the minimum level of probability to be found in random sequences, were selected. Flexible fast search program accompanies the bank. The researcher can specify a similarity matrix (the type PAM, BLOSUM and other). Variable levels of similarity can be set (permitting search strategies ranging from exact matches to increasing levels of 'fuzziness'). AVAILABILITY: The Internet address for comparing sequences with the bank is: http://wwwmgs.bionet.nsc.ru/mgs/programs/prof_pat/. The local version of the bank and search programs (approximately 50 Mb) is available via ftp: ftp://ftp.bionet.nsc. ru/pub/biology/vector/prof_pat/, and ftp://ftp.ebi.ac. uk/pub/databases/prof_pat/. Another appropriate way for its external use is to mail amino acid sequences to bachin@vector.nsc.ru for comparison with PROF_ PAT 1.3.

Transcription regulatory regions database (TRRD): its status in 2000.

Transcription Regulatory Regions Database (TRRD) has been developed for accumulation of experimental information on the structure-function features of regulatory regions of eukaryotic genes. Each entry in TRRD corresponds to a particular gene and contains a description of structure-function features of its regulatory regions (transcription factor binding sites, promoters, enhancers, silencers, etc.) and gene expression regulation patterns. The current release, TRRD 4.2.5, comprises the description of 760 genes, 3403 expression patterns, and >4600 regulatory elements including 3604 transcription factor binding sites, 600 promoters and 152 enhancers. This information was obtained through annotation of 2537 scientific publications. TRRD 4.2.5 is available through the WWW at http://wwwmgs.bionet.nsc.ru/mgs/dbases/trrd4/

Transcription Regulatory Regions Database (TRRD):its status in 1999.

The Transcription Regulatory Regions Database (TRRD) is a curated database designed for accumulation of experimental data on extended regulatory regions of eukaryotic genes, the regulatory elements they contain, i.e., transcription factor binding sites, promoters, enhancers, silencers, etc., and expression patterns of the genes. Release 4.1 of TRRD offers a number of significant improvements, in particular, a more detailed description of transcription factor binding sites, transcription factors per se, and gene expression patterns in a computer-readable format. In addition, the new TRRD release provides considerably more references to other molecular biological databases. TRRD 4.1 is installed under SRS and is available through the WWW at http://www.bionet.nsc.ru/trrd/