The wheat mitochondrial gene for subunit I of the NADH dehydrogenase complex: A trans-splicing model for this gene-in-pieces
The nadl gene encoding subunit I of the respiratory chain NADH dehydrogenase is fragmented into five unique-copy coding segments that are scattered over at least 40 kb and interspersed with other genes in the wheat mitochondrial genome. The nad1 segments are flanked by sequences with group II intron...
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Published in | Cell Vol. 65; no. 3; pp. 465 - 472 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Cambridge, MA
Elsevier Inc
03.05.1991
Cell Press |
Subjects | |
Online Access | Get full text |
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Summary: | The
nadl gene encoding subunit I of the respiratory chain NADH dehydrogenase is fragmented into five unique-copy coding segments that are scattered over at least 40 kb and interspersed with other genes in the wheat mitochondrial genome. The
nad1 segments are flanked by sequences with group II intron features, and transcript analysis demonstrates the presence of correctly spliced mRNAs. RNA editing occurs at sites asymmetrically distributed along the wheat
nad1 coding region, and the initiation codon is created by RNA editing. The unusual organization of the wheat
nad1 gene is attributed to mitochondrial DNA rearrangements within introns, and a
trans-splicing model involving secondary structural interactions between group II-like intron pieces is proposed for its expression. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0092-8674 1097-4172 |
DOI: | 10.1016/0092-8674(91)90464-A |