SPATIAL CONTROL OF GUT-SPECIFIC GENE EXPRESSION DURING CAENORHABDITIS ELEGANS DEVELOPMENT
1991
The nematode Caenorhabditis elegans was transformed with constructs containing upstream deletions of the gut-specific ges-1 carboxylesterase gene. With particular deletions, ges-1 was expressed, not as normally in the gut, but rather in muscle cells of the pharynx (which belong to a sister lineage of the gut) or in body wall muscle and hypodermal cells (which belong to a cousin lineage of the gut). These observations suggest that gut-specific gene expression in C. elegans involves not only gut-specific activators but also multiple repressors that are present in particular nongut lineages.
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