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A CLAssification of genetic Mobile Elements

Prokaryotic Mobile Genetic Elements (MGE's) are central players in mobilizing genes, whether within a given genome (intra-cellular mobility) or between bacterial cells (inter-cellular mobility). Traditionally, MGE's have been classified as either bacteriophages, plasmids or transposons. This classification becomes more and more obsolete as many chimerical elements are identified, which display strong similarities with elements of different families.
We propose therefore ACLAME, a database dedicated to the collection and classification of MGEs from various sources, comprising all known phage genomes, plasmids and transposons.

Codon Usage Database

Codon Usage Database is an extended WWW version of CUTG (Codon Usage Tabulated from GenBank). The frequency of codon use in each organism is made searchable through this World Wide Web site. CUTG was originally developed by Prof. Toshimichi Ikemura at Laboratory of Evolutionary Genetics, National Institute of Genetics. Codon Usage Database is developed and mainteined by Yasukazu Nakamura at The First Laboratory for Plant Gene Research, Kazusa DNA Research Institute.

The Genetic Codes

Database about deviations from the standard genetic code in various organisms and organelles. Compiled by Andrzej (Anjay) Elzanowski and Jim Ostell National Center for Biotechnology Information (NCBI), Bethesda, Maryland, U.S.A.

Human Endogenous Retrovirus Database"  info

Retroviral genomes or parts of their genomes are present in the DNA of many organisms. Studies of endogenous retroviral nucleotide sequences have become an important part of contemporary retrovirology as well as of molecular and cellular biology and genomics. Human endogenous retroviruses (HERVs) are of special interest also because their expression may be associated with several diseases, including cancer. Various groups of HERVs have been reported in the human genome. Their number can range from one copy to many thousand copies.

ImMunoGene Tics Database"  info

The international ImMunoGeneTics information system (IMGT;, is a high quality integrated information system specialized in immunoglobulins (IG), T cell receptors (TR), major histocompatibility complex (MHC), and related proteins of the immune system (RPI) of human and other vertebrates, created in 1989, by the Laboratoire d'ImmunoGenetique Moleculaire (LIGM; Universite Montpellier II and CNRS) at Montpellier, France

Stress-Induced DNA Duplex Destabilization (SIDD) - Database"  info

SIDDBASE is a database containing the stress-induced DNA duplex destabilization (SIDD) profiles of complete microbial genomes.

Short Tandem Repeat DNA

While the use of STRs for genetic mapping and identity testing has become widespread among DNA typing laboratories, there is no single place where information may be found regarding STR systems. This web site is an attempt to bring together the abundant literature on the subject in a cohesive fashion to make future work in this field easier. Facts and sequence information on each STR system, population data, commonly used multiplex STR systems, PCR primers and conditions, and a review of various technologies for analysis of STR alleles have been included in this database. Addresses for scientists and organizations working in this area have also been included as well as a comprehensive reference listing of material on STRs used for DNA typing purposes.

TIGR Gene Indices

Organism-specific databases of EST and gene sequences.