Chloroplast group III twintron excision utilizing multiple 5′- and 3′-splice sites.

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A complex twintron is excised as four individual introns.

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A group III twintron encoding a maturase-like gene excises through lariat intermediates.

The 1605 bp intron 4 of the Euglena gracilis chloroplast psbC gene was characterized as a group III twintron composed of an internal 1503 nt group III intron with an open reading frame of 1374 nt (ycf13, 458 amino acids), and an external group III intron of 102 nt. Twintron excision proceeds by a sequential splicing pathway. The splicing of the internal and external group III introns occurs via...

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ژورنال

عنوان ژورنال: The EMBO Journal

سال: 1992

ISSN: 0261-4189

DOI: 10.1002/j.1460-2075.1992.tb05611.x