Minimally, the GBD provides assembly data, comparative genomics annotations, and mRNA, EST and RefSeq (3) gene alignments (when available) from GenBank (4) for each assembly. When available, links are provided to the complementary annotations in two other major genome browsers, Ensembl (5) and NCBI's MapViewer (6). A large set of additional annotations is available for widely studied genomes such as the human and mouse. Assemblies that lack sufficient native RefSeq data alignments and are of sufficient evolutionary distance from the human genome may also include a human proteins annotation that maps human exons using tBLASTn. The organizations and individuals who contributed to the sequencing, assembly, and annotation of featured organisms are acknowledged at: http://genome.ucsc.edu/goldenPath/credits.html; detailed information about the individual annotation tracks may be found in the Genome Browser by clicking the vertical gray or blue bars to the left of the displayed tracks.
