In October 2006, the Broad Institute released a 6.5X WGS assembly of the gray short-tailed opossum genome – MonDom5. The source of the DNA was a female opossum from the Southwest Foundation for Biomedical Research (SFBR), San Antonio, Texas. The NCBI Monodelphis domestica build 2.1 (Mdm2.1) includes the WGS assembly and a complete mitochondrial genome. The opossum genome consists of 8 pairs of autosomes and a pair of sex chromosomes, X and Y.

The NCBI Map Viewer provides graphical displays of features on the opossum genome sequence assembly. Map features that can be seen along the sequence include NCBI contigs (the 'Contig' map), the WGS sequences (the 'Component' map), and the location of genes, STSs, ESTs, and Gnomon predicted gene models. Available Documentation provides tutorials, statistics, and information about resource features and methods used.

You can find markers of interest by submitting a query against the whole genome, or one chromosome at a time. The results are indicated both graphically, as tick marks on the chromosome, or in a tabular format. Alternatively, you can browse a chromosome by clicking on a chromosome link in the ideogram above. Use the "Maps & Options" window, available on individual chromosome displays, to configure your display.

Please note that other genomes can also be viewed in the NCBI Map Viewer resource. The Map Viewer Home Page provides a current list of available genomes. Consider also reviewing the resources listed on the Genomic Biology site.

Available Documentation:

• NCBI Handbook: Map Viewer chapter - resource description
• NCBI Handbook: Map Viewer Exercises - tutorials and examples
• Map Viewer Help - details about navigation and customizing your display
• Genome Assembly - description of genome assembly and annotation process
• Gnomon - description of NCBI's Hidden Markov Model (HMM) ab initio prediction program

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