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| Content Provider | Springer Nature Link |
|---|---|
| Author | Ikuta, Kyosuke Kawai, Hiroshi Müller, Dieter G. Ohama, Takeshi |
| Copyright Year | 2008 |
| Abstract | The mitochondrial genome of a filamentous brown alga Pylaiella littoralis (strain CCMP 1907) has been reported to contain four group IIB introns in the LSU rRNA gene and three group IIA introns in the cox1 gene. We found extreme variability in the number of group II introns for these two genes by analyzing eight P. littoralis specimens collected at worldwide habitats. The first intron of the LSU rRNA gene from a specimen collected in France and the fourth intron from a specimen harvested in Japan exhibited an exceptionally long evolutionary distance when compared with the cognate introns found in P. littoralis specimens. Moreover, these introns harbored an intact or nearly intact tripartite ORF, suggesting they are the result of a recent invasion of cognate introns. Based on the fact that many of the target sites were intronless, we propose that opportunity of intron infection is the bottleneck step of the group II intron cycle which consists of invasion, degeneration, and complete loss from the target site. |
| Starting Page | 207 |
| Ending Page | 216 |
| Page Count | 10 |
| File Format | |
| ISSN | 01728083 |
| Journal | Current Genetics |
| Volume Number | 53 |
| Issue Number | 4 |
| e-ISSN | 14320983 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2008-01-26 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Pylaiella littoralis Intron invasion Group II intron Geographic polymorphism Reverse transcription Mitochondria Proteomics Plant Sciences Cell Biology Biochemistry Microbiology Microbial Genetics and Genomics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Genetics Medicine |
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