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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Expression of the genes encoding the ecdysteroid and retinoid receptors in regenerating limb tissues from the fiddler crab, Uca pugilator.

Using sequence information derived from the Drosophila melanogaster (Dm) ecdysteroid receptor ( EcR)- and retinoid X receptor (RXR)-encoding gene homologs, we have isolated cDNA clones corresponding to the DNA-binding domains (DBD) for these two nuclear receptors from the fiddler crab, Uca pugilator (Up). Both genes appear to be represented in 1-2 copies in the Up genome, and unlike Dm, contain an intron within the DBD-encoding region. Sequence comparisons to the Dm EcR and RXR homologs indicate 76 and 82% nucleotide identity, respectively, corresponding to 6 and 4 single-amino acid substitutions which primarily cluster in the region of the molecule involved in dimerization. RT-PCR analysis indicates that both the EcR and RXR homologs are expressed during the initial stages of limb regeneration, temporally concomitant with early blastema formation and the secretion of a flexible sac cuticle at the site of limb loss.[1]

References

  1. Expression of the genes encoding the ecdysteroid and retinoid receptors in regenerating limb tissues from the fiddler crab, Uca pugilator. Durica, D.S., Hopkins, P.M. Gene (1996) [Pubmed]
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