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Development, Vol 122, Issue 3 937-950, Copyright © 1996 by Company of Biologists
JOURNAL ARTICLES |
KA Clark and DM McKearin
Department of Biochemistry, University of Texas-Southwestern Medical Center, Dallas 75235-9038, USA.
The differentiation of Drosophila germ cells is a useful model for studying mechanisms of cell specification. We report the identification of a gene, stonewall, that is required for germ cell development. Mutations in stonewall block proper oocyte differentiation and frequently cause the presumptive oocyte to develop as a nurse cell. Eventually, germ cells degenerate apoptotically. Stonewall is a germ cell nuclear protein; Stonewall has a DNA binding domain that shows similarities to the Myb and Adf-1 transcription factors and has other features that suggest that it is a transcription activating factor. We suggest that Stonewall transcriptional regulation is essential in cystocytes for maturation into specialized nurse cells and oocyte.
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