Group III intron
Genetic intron in some protists / From Wikipedia, the free encyclopedia
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Group III intron is a class of introns found in mRNA genes of chloroplasts in euglenid protists. They have a conventional group II-type dVI with a bulged adenosine, a streamlined dI, no dII-dV, and a relaxed splice site consensus.[1]:āfig. 2ā Splicing is done with two transesterification reactions with a dVI bulged adenosine as initiating nucleophile; the intron is excised as a lariat.[2] Not much is known about how they work,[1] although an isolated chloroplast transformation system has been constructed.[3]