Abstract:
:A new algorithm, WABA, was developed for doing large-scale alignments between genomic DNA of different species. WABA was used to align 8 million bases of Caenorhabditis briggsae genomic DNA against the entire 97-million-base Caenorhabditis elegans genome. The alignment, including C. briggsae homologs of 154 genetically characterized C. elegans genes and many times this number of largely uncharacterized ORFs, can be browsed and searched on the Web (http://www.cse.ucsc.edu/ approximately kent/intronerator). The alignment confirms that patterns of conservation can be useful in identifying regulatory regions and rarely expressed coding regions. Conserved regulatory elements can be identified inside coding exons by examining the level of divergence at the wobble position of codons. The alignment reveals a bimodal size distribution of syntenic regions. Over 250 introns are present in one species but not the other. The 3' and 5' intron splice sites have more similarity to each other in introns unique to one species than in C. elegans introns as a whole, suggesting a possible mechanism for intron removal.
journal_name
Genome Resjournal_title
Genome researchauthors
Kent WJ,Zahler AMdoi
10.1101/gr.10.8.1115subject
Has Abstractpub_date
2000-08-01 00:00:00pages
1115-25issue
8eissn
1088-9051issn
1549-5469journal_volume
10pub_type
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