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FEBS Lett. 1998 Mar 13;424(3):279-84.

Existence of four acetylcholinesterase genes in the nematodes Caenorhabditis elegans and Caenorhabditis briggsae.

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Groupe Cholinestérases, Différenciation cellulaire et Croissance, Centre INRA de Montpellier, France.


Three genes, ace-1, ace-2 and ace-3, respectively located on chromosomes X, I and II, were reported to encode acetylcholinesterases (AChEs) of classes A, B and C in the nematode Caenorhabditis elegans. We have previously cloned and sequenced ace-1 in the two related species C. elegans and C. briggsae. We report here partial sequences of ace-2 (encoding class B) and of two other ace sequences located in close proximity on chromosome II in C. elegans and C. briggsae. These two sequences are provisionally named ace-x and ace-y, because it is not possible at the moment to establish which of these two genes corresponds to ace-3. Ace-x and ace-y are transcribed in vivo as shown by RT-PCR and they are likely to be included in a single operon.

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