Mix and match: Patchwork domain evolution of the land plant-specific Ca2+-permeable mechanosensitive channel MCA

Mix and match: Patchwork domain evolution of the land plant-specific Ca2+-permeable mechanosensitive channel MCA

Multidomain proteins can have a complex evolutionary history that may involve de novo domain evolution, recruitment and / or recombination of existing domains and domain losses. Here, the domain evolution of the plant-specific Ca2+-permeable mechanosensitive channel protein, MID1-COMPLEMENTING ACTIV...

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Bibliographic Details
Published in:PloS one 2021-04, Vol.16 (4), p.e0249735-e0249735
Main Authors: Nishii, Kanae, Möller, Michael, Iida, Hidetoshi
Format: Article
Language:eng
Subjects:
Algae
Amino acids
Angiosperms
Aquatic plants
Biology and Life Sciences
Bryophytes
Calcium ions
Calcium permeability
Cell division
Computer and Information Sciences
Domains
Eukaryotes
Evolution
Evolutionary genetics
Ferns
Gene sequencing
Genes
Genomes
Gymnosperms
Kinases
Mechanosensitive channels
Molecular evolution
Phylogenetics
Phylogeny
Physical sciences
Prokaryotes
Proteins
Taxonomy
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Summary:Multidomain proteins can have a complex evolutionary history that may involve de novo domain evolution, recruitment and / or recombination of existing domains and domain losses. Here, the domain evolution of the plant-specific Ca2+-permeable mechanosensitive channel protein, MID1-COMPLEMENTING ACTIVITY (MCA), was investigated. MCA, a multidomain protein, possesses a Ca2+-influx-MCAfunc domain and a PLAC8 domain. Profile Hidden Markov Models (HMMs) of domains were assessed in 25 viridiplantae proteomes. While PLAC8 was detected in plants, animals, and fungi, MCAfunc was found in streptophytes but not in chlorophytes. Full MCA proteins were only found in embryophytes. We identified the MCAfunc domain in all streptophytes including charophytes where it appeared in E3 ubiquitin ligase-like proteins. Our Maximum Likelihood (ML) analyses suggested that the MCAfunc domain evolved early in the history of streptophytes. The PLAC8 domain showed similarity to Plant Cadmium Resistance (PCR) genes, and the coupling of MCAfunc and PLAC8 seemed to represent a single evolutionary event. This combination is unique in MCA, and does not exist in other plant mechanosensitive channels. Within angiosperms, gene duplications increased the number of MCAs. Considering their role in mechanosensing in roots, MCA might be instrumental for the rise of land plants. This study provides a textbook example of de novo domain emergence, recombination, duplication, and losses, leading to the convergence of function of proteins in plants.
ISSN:1932-6203
1932-6203