Authors
Alissa M Williams, Giulia Friso, Klaas J van Wijk, Daniel B Sloan
Publication date
2019/4
Journal
The Plant Journal
Volume
98
Issue
2
Pages
243-259
Description
Eukaryotic cells represent an intricate collaboration between multiple genomes, even down to the level of multi‐subunit complexes in mitochondria and plastids. One such complex in plants is the caseinolytic protease (Clp), which plays an essential role in plastid protein turnover. The proteolytic core of Clp comprises subunits from one plastid‐encoded gene (clpP1) and multiple nuclear genes. TheclpP1 gene is highly conserved across most green plants, but it is by far the fastest evolving plastid‐encoded gene in some angiosperms. To better understand these extreme and mysterious patterns of divergence, we investigated the history ofclpP1 molecular evolution across green plants by extracting sequences from 988 published plastid genomes. We find thatclpP1 has undergone remarkably frequent bouts of accelerated sequence evolution and architectural changes (e.g. a loss of introns andRNA‐editing sites …
Scholar articles
AM Williams, G Friso, KJ van Wijk, DB Sloan - The Plant Journal, 2019