Integrative and conjugative elements (ICEs) are a diverse group of mobile genetic elements found in both Gram-positive and Gram-negative bacteria. ICEs are self-transmissible elements that encode a full complement of machinery for conjugation as well as intricate regulatory systems to control excision from the chromosome and onward conjugative transfer [Wozniak and Waldor, 2010; Burrus,2004]. These multi-talented entities can promote their own mobilization and potentially that of other 'hitch-hiking' genetic elements and thus contribute to horizontal transfer of virulence determinants, antibiotic-resistance genes and other bacterial traits [Hastings. et al., 2004]. ICEs are being identified in increasing numbers as sequenced genome databases expand exponentially [Wozniak, et al., 2010; Ryan, et al., 2009; te Poele, et al., 2008; Burrus et al., 2002]. At present only a few have been classified into ICE families, amongst the best characterized of which is the SXT/R391 family of Vibrio cholerae, like SXT of Vibrio cholerae O139 MO10. In addition, several elements discovered more than a decade ago which had previously been classified as plasmids or conjugative transposons, such as pSAM2 and Tn916 , have now been defined as ICEs. ICEs typically exhibit a number of features that are of interest to researchers in the fields of prokaryotic evolution, pathogenesis, biotechnology and metabolism. These include high levels of functional diversity, foreign and frequently patchwork origins and sparse experimental data on these entities. We are collating available experimental and bioinformatics analyses data and literature about known and putative ICEs in bacteria as a PostgreSQL-based database called ICEberg. As its name implies we expect that ICEberg will continue to grow from its currently visible tiny 'tip' representing presently known ICEs to a very substantial database as more and more of these entities are revealed. ... [Information of the supplier]
EcoGene 3.0 a is new web interface for EcoGene.org built using the Drupal open source website software. EcoGene 2.0 and EcoGene both present data from our daily-updated MySql relational database. Some of the scope and content of EcoGene.org will be available only through EcoGene 3.0. EcoGene 2.0 will remain available via a link on the EcoGene 3.0 home page for those who might prefer to continue using it. Please report any problems you find with EcoGene 3.0 to krudd@med.miami.edu. EcoGene-RefSeq is developed to facilitate the usage of EcoGene’s graphic presentations and tools with other genomes. Currently, 2074 complete bacterial genomes from the NCBI RefSeq project are accessible via EcoGene-RefSeq. Cross Reference Mapping and Download is created for user access to many additional accession numbers and other gene identifiers such as gene name, synonyms. GeneSets Venn diagrams GeneSets are collections of genes clustered in EcoTopics, EcoArray or user-provided lists of genes. Venn diagram is an interactive graphic presentation of Boolean query comparisons using or two or three GeneSets. More details are available on the EcoTools page. ... [Information of the supplier]
The MIPS Comprehensive Yeast Genome Database (CYGD) aims to present information on the molecular structure and functional network of the entirely sequenced, well-studied model eukaryote, the budding yeast Saccharomyces cerevisiae. In addition the data of various projects on related yeasts are used for comparative analysis. ... [Information of the supplier]
The Index to Plant Chromosome Numbers is an NSF funded project that aims to extract and index original plant chromosome numbers of naturally occurring and cultivated plants published throughout the world. A committee of voluntary contributing editors, located in various parts of the world, reviews sets of serial titles assigned to them and returns the information to the editors for collation in the Index. Chromosome indexes are published every two years. The Index to Plant Chromosome Numbers project has been based at the Missouri Botanical Garden since 1978. Data from published indexes from 1984 onward are available for consultation through this facility. ... [Information of the supplier]
The Integrated Microbial Genomes (IMG) system provides a framework for comparative analysis of the genomes sequenced by the Joint Genome Institute. Its goal is to facilitate the visualization and exploration of genomes from a functional and evolutionary perspective. There are two main approaches to using the system: genes and genomes. Genes can be found by keyword or BLAST query via the Gene Search and then analyzed in the context of their chromosomal, metabolic, and phylogenetic neighborhoods. Genomes of multiple organisms can be selected with the Organism Browser. You can then compare them through the Phylogenetic Profiler in order to identify common or unique properties. ... [Information of the supplier]
This site provides access to the Missouri Botanical Garden's VAST (VAScular Tropicos) nomenclatural database and associated authority files. Enter a scientific name in the box below to obtain current information on the name, its place of publication, type, and other information about the plant. Examples of name entries would be Poa, Olyra latifolia, Acacia baueri aspera. ... [Information of the supplier]
This resource gives an overview of the known chromosome numbers, up to now, within the Asteraceae. Through a detailed search mask the chromosome numbers, the taxa investigated, and bibliographic references are accessible. Publications up to and including 2005 are recorded in the resource. [Editorial staff vifabio]
Estimation of nuclear DNA content is the most frequent application of flow cytometry in plants. The growing number of publications in this field calls for an efficient tool to access and analyze the published information. The FLOWer database is a unique resource that lists all publications on DNA flow cytometry and enables their quantitative evaluation. Unbiased data can be obtained on taxonomic groups that were analysed, the use of nuclear isolation buffers and methods of standardization, including DNA reference standards, the use of fluorochromes and measures of result quality. The objective(s) of individual studies can be assessed as well as the flow cytometers that were used, scientific journals in which the results were published and countries of author's origin. ... [Information of the supplier]
In the 21st century, it is becoming increasingly important for students to be aware of and understand basic biotechnological and microbiological concepts. As always, these scientific concepts are most effectively conveyed through hands-on laboratory experiences. However, laboratory exercises are challenging because of the potential risk of student exposure to harmful microbes and chemicals, challenges in maintaining sterility of cultures, cost of scientific materials, and length of time required for preparation and laboratory experiments. Because of the urgent need to improve and expand the biotechnology and microbiology component of curricula using novel, safe, and effective approaches, we have developed this web site. As the centerpiece of this project, we have utilized the halophilic microbe, Halobacterium species NRC-1, which has been extensively studied in our laboratory for the last 20 years, as an ideal teaching vehicle. ... [Information of the supplier]
Aspergillus flavus is a plant, animal, and human pathogen that produces the carcinogen, aflatoxin. An organized multidisciplinary team is coordinating research efforts to control this fungus and to prevent the formation of its toxin in food and feeds. [Information of the supplier]
