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Microorganisms

Title:		"Primary Structure and Coding Genes of Two Pheromones from the Antarctic Psychrophilic Ciliate, Euplotes focardii"
Author(s):		Alimenti C; Candelori A; Jiang Y; Luporini P; Vallesi A;
Address:		"Laboratory of Eukaryotic Microbiology and Animal Biology, School of Biosciences and Veterinary Medicine, University of Camerino, 62032 Camerino, MC, Italy"
Journal Title:		Microorganisms
Year:		2022
Volume:		20220525
Issue:		6
Page Number:		-
DOI:		10.3390/microorganisms10061089
ISSN/ISBN:		2076-2607 (Print) 2076-2607 (Electronic) 2076-2607 (Linking)
Abstract:		"In ciliates, diffusible cell type-specific pheromones regulate cell growth and mating phenomena acting competitively in both autocrine and heterologous fashion. In Euplotes species, these signaling molecules are represented by species-specific families of structurally homologous small, disulfide-rich proteins, each specified by one of a series of multiple alleles that are inherited without relationships of dominance at the mat-genetic locus of the germinal micronuclear genome, and expressed as individual gene-sized molecules in the somatic macronuclear genome. Here we report the 85-amino acid sequences and the full-length macronuclear nucleotide coding sequences of two pheromones, designated Ef-1 and Ef-2, isolated from the supernatant of a wild-type strain of a psychrophilic species of Euplotes, E. focardii, endemic to Antarctic coastal waters. An overall comparison of the determined E. focardii pheromone and pheromone-gene structures with their homologs from congeneric species provides an initial picture of how an evolutionary increase in the complexity of these structures accompanies Euplotes speciation"
Keywords:		macronuclear gene structures polar microbiology protein pheromones water-borne chemical signals;
Notes:		"PubMed-not-MEDLINEAlimenti, Claudio Candelori, Annalisa Jiang, Yaohan Luporini, Pierangelo Vallesi, Adriana eng PNRA18_00077/Programma Nazionale di Ricerca in Antartide of the Italian Ministry of Research/ Switzerland 2022/06/25 Microorganisms. 2022 May 25; 10(6):1089. doi: 10.3390/microorganisms10061089"