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FEBS Lett

Title:		"Structural characterization of a protein pheromone from a cold-adapted (Antarctic) single-cell eukaryote, the ciliate Euplotes nobilii"
Author(s):		Alimenti C; Ortenzi C; Carratore V; Luporini P;
Address:		"Dipartimento di Biologia Molecolare Cellulare e Animale, University of Camerino, 62032 Camerino (MC), Italy"
Journal Title:		FEBS Lett
Year:		2002
Volume:		514
Issue:		2-Mar
Page Number:		329 - 332
DOI:		10.1016/s0014-5793(02)02393-1
ISSN/ISBN:		0014-5793 (Print) 0014-5793 (Linking)
Abstract:		"Free-living species of ciliated Protozoa control their vegetative (mitotic) proliferation and mating (sexual) processes by diffusible, cell type-specific protein signals (pheromones). One of these molecules, designated En-2, was isolated from a species, Euplotes nobilii, living in the stably cold marine waters of Antarctica, and its complete amino acid sequence of 60 residues was determined by automated Edman degradation of the whole protein and peptides generated by trypsin digestion. The proposed sequence is: DIEDFYTSETCPYKNDSQLA(20)WDTCSGGTGNCGTVCCGQCF(40)SFPVSQSCAGMADSNDCPNA(60). The En-2 structure appears to be characterized by an adaptive insertion of a glycine-rich motif potentially capable to confer more flexibility to a functionally critical region of the molecule"
Keywords:		"Amino Acid Motifs/physiology Amino Acid Sequence Animals Antarctic Regions Chromatography, High Pressure Liquid Cold Climate Euplotes/*chemistry Mass Spectrometry Molecular Sequence Data Molecular Weight Peptide Mapping Pheromones/*chemistry/isolation & p;"
Notes:		"MedlineAlimenti, Claudio Ortenzi, Claudio Carratore, Vito Luporini, Pierangelo eng Research Support, Non-U.S. Gov't England 2002/04/12 FEBS Lett. 2002 Mar 13; 514(2-3):329-32. doi: 10.1016/s0014-5793(02)02393-1"