Plant Spliceosomal Introns: Not Only Cut and Paste
نویسندگان
چکیده
منابع مشابه
Plant Spliceosomal Introns: Not Only Cut and Paste
Spliceosomal introns in higher eukaryotes are present in a high percentage of protein coding genes and represent a high proportion of transcribed nuclear DNA. In the last fifteen years, a growing mass of data concerning functional roles carried out by such intervening sequences elevated them from a selfish burden carried over by the nucleus to important active regulatory elements. Introns media...
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Although the widespread proliferation of introns in eukaryotic protein-coding genes remains one of the most poorly understood aspects of genomic architecture, major advances have emerged recently from large-scale genome sequencing projects and functional analyses of mRNA-processing events. Evidence supports the idea that spliceosomal introns were not only present in the stem eukaryote but diver...
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In this work we review the current knowledge on the prehistory, origins, and evolution of spliceosomal introns. First, we briefly outline the major features of the different types of introns, with particular emphasis on the nonspliceosomal self-splicing group II introns, which are widely thought to be the ancestors of spliceosomal introns. Next, we discuss the main scenarios proposed for the or...
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The paper develops Editor, a language for manipulating semi-structured documents, such as the ones typically available on the Web. Editor programs are based on two simple ideas, taken from text editors: \search" instructions are used to select regions of interest in a document, and \cut & paste" to restructure them. We study the expressive power and the complexity of these programs. We show tha...
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ژورنال
عنوان ژورنال: Current Genomics
سال: 2008
ISSN: 1389-2029
DOI: 10.2174/138920208784533629