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Group II and group III introns of twintrons: potential relationships with nuclear pre-mRNA introns
1Department of Biochemistry, University of Arizona, Tucson 85721.
Trends in Biochemical Sciences
|December 1, 1993
Abstract:
Two new and important features of introns have emerged from analysis of the Euglena gracilis chloroplast genome. One is a new class of introns, designated group III, that may be the closest contemporaries to nuclear pre-mRNA introns. The second is introns that are interrupted by other introns termed twintrons.