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Tetrahymena Expresses More than a Hundred Proteins with Lipid‐binding MORN Motifs that can Differ in their Subcellular Localisations
Author(s) -
Habicht Jörn,
Woehle Christian,
Gould Sven B.
Publication year - 2015
Publication title -
journal of eukaryotic microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.067
H-Index - 77
eISSN - 1550-7408
pISSN - 1066-5234
DOI - 10.1111/jeu.12216
Subject(s) - biology , tetrahymena , biochemistry , membrane protein , gene , function (biology) , microbiology and biotechnology , genetics , membrane
Proteins with membrane occupation and recognition nexus ( MORN ) motifs are associated with cell fission in apicomplexan parasites, chloroplast division in Arabidopsis and the motility of sperm cells. We found that ciliates are among those that encode the largest variety of MORN proteins. Tetrahymena thermophila expresses 129 MORN protein‐encoding genes, some of which are specifically up‐regulated during conjugation. A lipid‐binding assay underpins the assumption that the predominant function of MORN motifs themselves is to confer the ability of lipid binding. The localisation of four MORN candidate proteins with similar characteristics highlights the functional diversity of this group especially in ciliates.

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