Transcript analysis of glp-1 and lin-12, homologous genes required for cell interactions during development of C. elegans.
The glp-1 and lin-12 genes mediate several cell interactions during C. elegans development. We have identified the glp-1 gene in a region about 20 kb from lin-12. In collaboration with Yochem and Greenwald (1989; see accompanying paper), we show that a sequence identified by its similarity to lin-12 is in fact glp-1. We find a single 4.4 kb glp-1 transcript and a distinct 4.6 kb lin-12 transcript. Expression of the glp-1 transcript during development differs from that of lin-12. As expected from genetic analyses, glp-1 RNA is primarily in the germline while lin-12 RNA is primarily in the soma. Unexpectedly, we find that glp-1 RNA is also expressed in larval somatic tissues and that lin-12 RNA is abundant in early embryos. We suggest that glp-1 and lin-12 may play broader roles in development than previously thought.
Department of Genetics, University of Wisconsin, Madison 53706.
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J
Austin
J
J
Kimble
D000818:Animals; D002107:Caenorhabditis / Q000166:cytology / Q000196:embryology / Q000235:genetics*; D002450:Cell Communication; D003001:Cloning, Molecular; D005786:Gene Expression Regulation; D008562:Membrane Glycoproteins / Q000235:genetics*; D012333:RNA, Messenger / Q000235:genetics; D015183:Restriction Mapping; D014158:Transcription, Genetic
D008562:Membrane Glycoproteins; D012333:RNA, Messenger