RNase P from Organelles

Vioque, Álvaro

doi:10.1007/978-1-4419-1142-1_11

Cited by 1 publication

(1 citation statement)

References 72 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The evolution of plastid RNase P is intriguing because many algae, like the Glaucophyte Cyanophora paradoxa , some Prasinophyte green algae and all red algae whose chloroplast genomes have been sequenced, encode an rnpB gene in their plastids genome [ 12 ] (see below). However, no protein subunit homologous to bacterial RPP has been identified in algae, except in the green algae Ostreococcus tauri [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

RNase P RNA from the Recently Evolved Plastid of Paulinella and from Algae

Bernal‐Bayard¹,

Puerto-Galán²,

Vioque³

2014

IJMS

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 99%