Glide2, a second glial promoting factor in Drosophila melanogaster.
The fly glial cell deficient/glial cell missing (glide/gcm) gene codes for a transcription factor that induces gliogenesis. Lack of its product eliminates lateral glial cells in the embryonic nervous system. Here we identify a second gene, glide2, that is homologous to glide/gcm in the binding domain and that is also necessary and sufficient to promote glial differentiation. glide2 codes for a transcription factor that displays a weaker and delayed expression compared with glide/gcm. The two genes, which are located 27 kb apart and share cis-regulatory elements, are able to auto- and cross-regulate, indicating that they form a gene complex. Finally, we show that lack of both products eliminates all lateral glial cells, which means that the two genes contain all the fly lateral glial promoting activity.
Kammerer
M
M
Institut de Génétique et Biologie Moléculaire et Cellulaire, IGBMC/CNRS/ULP/INSERM - BP 163, 67404 Illkirch, c.u. de Strasbourg, France.
Giangrande
A
A
D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D002454:Cell Differentiation; D017931:DNA Primers; D004268:DNA-Binding Proteins; D029721:Drosophila Proteins; D004331:Drosophila melanogaster / Q000196:embryology / Q000235:genetics / Q000502:physiology*; D004625:Embryo, Nonmammalian / Q000502:physiology; D018507:Gene Expression Regulation, Developmental; D017403:In Situ Hybridization; D007814:Larva; D008969:Molecular Sequence Data; D009457:Neuroglia / Q000166:cytology / Q000502:physiology*; D009479:Neuropeptides / Q000737:chemistry / Q000235:genetics* / Q000378:metabolism*; D010802:Phylogeny; D011401:Promoter Regions, Genetic; D020133:Reverse Transcriptase Polymerase Chain Reaction; D016415:Sequence Alignment; D017386:Sequence Homology, Amino Acid; D015534:Trans-Activators / Q000737:chemistry / Q000235:genetics* / Q000378:metabolism*; D014157:Transcription Factors / Q000737:chemistry / Q000235:genetics* / Q000378:metabolism*
D017931:DNA Primers; D004268:DNA-Binding Proteins; D029721:Drosophila Proteins; C102805:GCM protein, Drosophila; C465362:Gcm2 protein, Drosophila; D009479:Neuropeptides; D015534:Trans-Activators; D014157:Transcription Factors