RNase P RNA from the recently evolved plastid of Paulinella and from algae
Bernal-Bayard, P.; Puerto-Galán, L.; Vioque, A. (2014). RNase P RNA from the recently evolved plastid of Paulinella and from algae. International Journal of Molecular Sciences 15(11): 20859-20875. https://dx.doi.org/10.3390/ijms151120859
In: International Journal of Molecular Sciences. MDPI AG: Basel. ISSN 1661-6596; e-ISSN 1422-0067, more
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| Keywords |
Exploitable Scientific Result
Marine Sciences
Marine Sciences > Marine Genomics
Scientific Community
Scientific Publication
Marine/Coastal |
| Author keywords |
chloroplast evolution; chromatophore; cyanobacteria; RNase P; tRNAprocessing |
| Project | Top | Authors |
- Association of European marine biological laboratories, more
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| Authors | | Top |
- Bernal-Bayard, P.
- Puerto-Galán, L.
- Vioque, A.
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| Abstract |
The RNase P RNA catalytic subunit (RPR) encoded in some plastids has been found to be functionally defective. The amoeba Paulinella chromatophora contains an organelle (chromatophore) that is derived from the recent endosymbiotic acquisition of a cyanobacterium, and therefore represents a model of the early steps in the acquisition of plastids. In contrast with plastid RPRs the chromatophore RPR retains functionality similar to the cyanobacterial enzyme. The chromatophore RPR sequence deviates from consensus at some positions but those changes allow optimal activity compared with mutated chromatophore RPR with the consensus sequence. We have analyzed additional RPR sequences identifiable in plastids and have found that it is present in all red algae and in several prasinophyte green algae. We have assayed in vitro a subset of the plastid RPRs not previously analyzed and confirm that these organelle RPRs lack RNase P activity in vitro. |
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