The Reverse-Transcriptase-Like Proteins Encoded by Group II Introns in the Mitochondrial Genome of the Brown Alga Pylaiella littoralis Belong to Two Different Lineages Which Apparently Coevolved with the Group II Ribosyme Lineages
- 1 January 1997
- journal article
- Published by Springer Nature in Journal of Molecular Evolution
- Vol. 44 (1) , 33-42
- https://doi.org/10.1007/pl00006119
Abstract
The mitochondrial genome of the brown alga Pylaiella littoralis contains two different types of group II introns. They each encode complete complex proteins, i.e., with a reverse transcriptase domain, a maturase or X domain, and an endonuclease or H-N-H/zinc finger domain. To our knowledge, this is the first example of the presence in the same genome of introns belonging to subgroups IIA and IIB which both contain multidomained RT-like proteins. We describe the group IIA introns that interrupt the cox1 gene. The RT-like proteins contained in these introns were compared to those of the LSU rDNA group IIB introns. The phylogenetic relationships of these intron ORFs were investigated and the possible evolution of group II introns is discussed.Keywords
This publication has 41 references indexed in Scilit:
- Comparative and functional anatomy of group II catalytic introns — a reviewPublished by Elsevier ,2003
- The Mitochondrial DNA of Allomyces macrogynus: The Complete Genomic Sequence from an Ancestral FungusJournal of Molecular Biology, 1996
- The Mitochondrial LSU rDNA of the Brown AlgaPylaiella littoralisReveals α-Proteobacterial Features and is Split by Four Group IIB Introns with an Atypical PhylogenyJournal of Molecular Biology, 1995
- Complete Sequence of the Mitochondrial DNA of the RhodophyteChondrus crispus(Gigartinales). Gene Content and Genome OrganizationJournal of Molecular Biology, 1995
- The Mitochondrial DNA of the Amoeboid Protozoon,Acanthamoeba castellanii: Complete Sequence, Gene Content and Genome OrganizationJournal of Molecular Biology, 1995
- Complete Sequence of the Mitochondrial DNA of the Chlorophyte Alga Prototheca wickerhamii: Gene Content and Genome OrganizationJournal of Molecular Biology, 1994
- Oomycete mtDNA: Phytophthora Genes for Cytochrome c Oxidase Use an Unmodified Genetic Code and Encode Proteins Most Similar to Those of PlantsExperimental Mycology, 1993
- Gene organization deduced from the complete sequence of liverwort Marchantia polymorpha mitochondrial DNAJournal of Molecular Biology, 1992
- Base-pairing interactions involving the 5′ and 3′-terminal nucleotides of group II self-splicing intronsJournal of Molecular Biology, 1990
- The deoxyribonucleic acids of two brown algae: Pylaiella littoralis (L.) Kjellm. and Sphacellaria sp.Plant Science Letters, 1981