%0 Journal Article %T Origin and evolution of spliceosomal introns %A Igor B Rogozin %A Liran Carmel %A Miklos Csuros %A Eugene V Koonin %J Biology Direct %D 2012 %I BioMed Central %R 10.1186/1745-6150-7-11 %K Intron sliding %K Intron gain %K Intron loss %K Spliceosome %K Splicing signals %K Evolution of exon/intron structure %K Alternative splicing %K Phylogenetic trees %K Mobile domains %K Eukaryotic ancestor %U http://www.biology-direct.com/content/7/1/11/abstract