PMID- 8223245 OWN - NLM STAT- MEDLINE DCOM- 19931129 LR - 20220215 IS - 0950-1991 (Print) IS - 0950-1991 (Linking) VI - 117 IP - 1 DP - 1993 Jan TI - The Drosophila gene pointed encodes two ETS-like proteins which are involved in the development of the midline glial cells. PG - 163-76 AB - Glial-neuronal cell interactions at the ventral midline are necessary for the proper elaboration of commissures in the embryonic CNS of Drosophila. In particular, migrating midline glial cells are required for the separation of segmental commissures. During this process the glial cells recognize specific neuronal cells at the midline, they migrate posteriorly along their cell processes and thereby separate the segmental commissures. The gene pointed (pnt) is required for this glial-neuronal cell interaction, as loss of function mutations lead to a change in the migration behavior of the midline glial cells. As a consequence, anterior and posterior commissures do not become separated and appear fused. Molecular analysis of pointed has revealed two differently spliced types of transcripts, which are encoded in a region extending over 55 kb of genomic sequence. In the CNS both transcript classes are expressed in cells of the midline, including the midline glial cells. Sequence analysis of cDNA clones corresponding to both transcript types reveals two different pointed proteins which share an ETS domain common to a number of transcription factors related to the vertebrate ets oncogene. Furthermore, one pointed protein form contains an additional domain of homology of approx. 80 amino acids in length, which is shared by only a subset of the ETS protein family. FAU - Klambt, C AU - Klambt C AD - Institut fur Entwicklungsbiologie, Koln, Germany. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Development JT - Development (Cambridge, England) JID - 8701744 RN - 0 (DNA-Binding Proteins) RN - 0 (Drosophila Proteins) RN - 0 (Nerve Tissue Proteins) RN - 0 (Proto-Oncogene Proteins) RN - 0 (Transcription Factors) RN - 0 (pnt protein, Drosophila) SB - IM GS - pnt MH - Amino Acid Sequence MH - Animals MH - Base Sequence MH - Central Nervous System/*embryology MH - DNA-Binding Proteins MH - Drosophila/*genetics MH - Drosophila Proteins MH - Embryonic Induction/*genetics MH - Genes, Insect MH - In Situ Hybridization MH - Molecular Sequence Data MH - Morphogenesis/genetics MH - Nerve Tissue Proteins MH - Neuroglia/*physiology MH - Phenotype MH - Proto-Oncogene Proteins/*genetics MH - Sequence Homology, Amino Acid MH - Transcription Factors MH - Transcription, Genetic/genetics EDAT- 1993/01/01 00:00 MHDA- 1993/01/01 00:01 CRDT- 1993/01/01 00:00 PHST- 1993/01/01 00:00 [pubmed] PHST- 1993/01/01 00:01 [medline] PHST- 1993/01/01 00:00 [entrez] AID - 10.1242/dev.117.1.163 [doi] PST - ppublish SO - Development. 1993 Jan;117(1):163-76. doi: 10.1242/dev.117.1.163.