Relevance of the branch point adenosine, coordination loop, and 3' exon binding site for in vivo excision of the Sinorhizobium meliloti group II intron RmInt1.

Abstract excerpt

Excision of the bacterial group II intron RmInt1 has been demonstrated in vivo, resulting in the formation of both intron lariat and putative intron RNA circles. We show here that the bulged adenosine in domain VI of RmInt1 is required for splicing via the branching pathway, but branch site mutants produce small numbers of RNA molecules in which the first G residue of the intron is linked to the last C residue....

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