IMCB - Fugu Genome Project

IMCB - Fugu Genome Project provides genomic reference data and analysis capabilities leveraging the compact 400 Mb genome of Fugu rubripes to support comparative genomics, gene discovery, annotation, synteny analysis, and ORF prediction.

Key Features:

• Genome Compactness and Efficiency: The Fugu rubripes genome is approximately 400 Mb, about 7.5 times smaller than the human genome, with short intergenic and intronic sequences and a paucity of repetitive elements.
• Gene Density and Distribution: More than 90% of Fugu DNA is unique, multigene-sized scaffolds cover over 95% of the assembly, and genes occupy about one-third of the genome.
• Comparative Genomics and Synteny: Enables identification of conserved regulatory elements and preservation of chromosomal segments and gene linkages between Fugu and other vertebrates including human despite evolutionary rearrangements.
• Gene Discovery and Validation: Supports discovery of human gene homologs, with approximately three-quarters of predicted human proteins having strong matches in Fugu, and identification of divergent or absent homologs.
• Annotation and Sequence Analysis: Provides annotation capabilities to analyze genomic sequences against protein and DNA databases and leverages over 50,000 shotgun cosmid clone sequences covering nearly 25 Mb of the genome.
• Research Applications: Facilitates studies of gene density, ORF prediction from short genomic sequences, and functional interpretation of vertebrate genomes using Fugu as a compact model.
• Integration with External Resources: Integrates sequence similarity and annotation workflows using resources such as BLAST and Ensembl mirrors.

Scientific Applications:

• Comparative Genomics: Identify conserved regulatory elements, synteny, and chromosomal segment preservation between Fugu and other vertebrates including human.
• Gene Discovery: Discover and validate human gene homologs and detect divergent or missing homologs via sequence similarity.
• ORF Prediction: Predict open reading frames from short genomic sequences derived from the Fugu assembly and shotgun cosmid clones.
• Genome Architecture Studies: Analyze gene density, intron/intergenic length distributions, and repetitive element paucity in a compact vertebrate genome.
• Functional and Evolutionary Interpretation: Use Fugu as a simplified vertebrate model to infer gene function and evolutionary relationships applicable to more complex organisms.

Methodology:

Annotation and sequence analysis against protein and DNA databases (including BLAST searches), ORF prediction from short genomic sequences, comparative genomics and synteny analysis, and use of over 50,000 shotgun cosmid clone sequences covering nearly 25 Mb as data sources.