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La trasmissione familiare degli stili di attaccamento: funzioni e significati delle rappresentazioni materne dalla gravidanza alle prime interazioni con il bambino.
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La trasmissione familiare degli stili di attaccamento:funzioni e significati delle rappresentazioni materne dalla gravidanza alle prime interazioni con il bambino
No full textPrimary Structure and Coding Genes of Two Pheromones from the Antarctic Psychrophilic Ciliate, Euplotes focardii
Full text linkIn 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
Alcune caratteristiche delle rappresentazioni materne del bambino al 7° mese di gravidanza.
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