Domina (Dom), a new Drosophila member of the FKH/WH gene family, affects morphogenesis and is a suppressor of position-effect variegation - PubMed (original) (raw)
Domina (Dom), a new Drosophila member of the FKH/WH gene family, affects morphogenesis and is a suppressor of position-effect variegation
M Strödicke et al. Mech Dev. 2000 Aug.
Free article
Abstract
Domina (Dom) is a novel member of the FKH/WH transcription factor gene family of Drosophila. Two alternatively polyadenylated Dom transcripts of 2.9 and 3.9 kb encode a 719-amino-acid protein with a FKH/WH domain and a putative acidic transactivation domain. Dom is mainly expressed in the central and peripheral nervous system. Homozygous mutants show rough eyes, irregular arrangement of bristles, extended wings, defective posterior wing margins, and a severely diminished vitality and fertility. Heterozygous Dom flies are morphologically wild type but show suppression of position-effect variegation. Consistently with this chromatin effect DOM protein is accumulated in the chromocenter and, as expected from a transcription factor, is found at specific euchromatic loci. Sequence comparison suggests that DOM of Drosophila is homologous to the chordate WHN proteins. The chromatin modifying capability of DOM is probably based on the FKH/WH domain, which shows a remarkable structural similarity to the winged-helix structures of H1 and the central globular domain of H5.
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