title: The evolution of ERMIONE in mitochondrial biogenesis and lipid homeostasis: An evolutionary view from comparative cell biology.
abstract: The ER-mitochondria organizing network (ERMIONE) in Saccharomyces cerevisiae is involved in maintaining mitochondrial morphology and lipid homeostasis. ERMES and MICOS are two scaffolding complexes of ERMIONE that contribute to these processes. ERMES is ancient but has been lost in several lineages including animals, plants, and SAR (stramenopiles, alveolates and rhizaria). On the other hand, MICOS is ancient and has remained present in all organisms bearing mitochondrial cristae. The ERMIONE precursor evolved in the α-proteobacterial ancestor of mitochondria which had the central subunit of MICOS, Mic60. The subsequent evolution of ERMIONE and its interactors in eukaryotes reflects the integrative co-evolution of mitochondria and their hosts and the adaptive paths that some lineages have followed in their specialization to certain environments. By approaching the ERMIONE from a perspective of comparative evolutionary cell biology, we hope to shed light on not only its evolutionary history, but also how ERMIONE components may function in organisms other than S. cerevisiae. This article is part of a Special Issue entitled: The cellular lipid landscape edited by Tim P. Levine and Anant K. Menon.
authors.affiliation: Biosciences, University of Exeter, Exeter EX4 4QD; UK. Electronic address: jeremy.grant.wideman@gmail.com.
authors.forename: Jeremy G
authors.initials: JG
authors.lastname: Wideman
authors.affiliation: Centre for Comparative Genomics and Evolutionary Bioinformatics, Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada.
authors.forename: Sergio A
authors.initials: SA
authors.lastname: Muñoz-Gómez
mesh_terms: D000818:Animals; D005075:Biological Evolution; D004721:Endoplasmic Reticulum / Q000378:metabolism*; D006706:Homeostasis / Q000502:physiology; D006801:Humans; D050356:Lipid Metabolism / Q000502:physiology*; D008928:Mitochondria / Q000378:metabolism / Q000502:physiology*; D051336:Mitochondrial Membranes / Q000378:metabolism; D001678:Organelle Biogenesis; D010802:Phylogeny
keywords: ERMES; ERMIONE; Evolutionary cell biology; MCS; MICOS; Membrane contact sites