A gut-to-pharynx/tail switch in embryonic expression of the Caenorhabditis elegans ges-1 gene centers on two GATA sequences

Article Abstract:

The control circuit for the Caenorhabditis elegans ges-1 gene (gut esterase no. 1) seems to be quite complex for an apparently nonessential gene expressed early in a clonal embryonic lineage. The study analyses the sequence needed for tissue-specific gene regulation by injection of deleted or mutated constructs of the ges-1 gene into a ges-1 (null) strain of worms and using esterase histochemistry to assay heritably changed embryos. The ges-1 GATA region exhibits properties of both a tissue-specific transcriptional enhancer and a transcriptional silencer. The gene may be differentially activated in the gut and repressed in MS cell derivatives.

Mutation (Biology), Mutation, Caenorhabditis elegans, Chromosome deletion, Gastrointestinal system

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Knockdown of spalt function by RNAi causes de-repression of Hox genes and homeotic transformations in the crustacean Artemia franciscana

Article Abstract:

The changes that occur in the homeotic genes and Hox genes due to cutting off the function of the spalt gene using ribonucleic acid interference in Artemia franciscana are studied.

Greece, Science & research, Crustacea, Crustaceans, Homeotic genes

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MAU-8 is a Phosducin-like Protein required for G protein signaling in C. elegans

Article Abstract:

Study of neurotransmission through G protein signalling during cell division of C. elegans is presented.

Analysis, Cell division, Neural transmission, Synaptic transmission

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