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- Title
The structure of the USP/RXR ofXenos peckiindicates that Strepsiptera are not closely related to Diptera.
- Authors
Hayward, D.; Trueman, J.; Bastiani, M.; Ball, E.
- Abstract
The receptor for the insect molting hormone, ecdysone, is a heterodimer consisting of the Ecdysone Receptor and Ultraspiracle (USP) proteins. The ligand binding domain sequences of arthropod USPs divide into two distinct groups. One group consists of sequences from members of the holometabolous Lepidoptera and Diptera, while the other arthropod sequences group with vertebrate retinoid-X-receptors (RXRs). We therefore wondered whether USP/RXR structure could be used to clarify the contentious phylogenetic position of the order Strepsiptera, which has proposed affinities with either Diptera or Coleoptera. We have cloned and sequenced the USP/RXR from the strepsipteranXenos pecki. Phylogenetic analyses are not consistent with a close affinity between Strepsiptera and Diptera.
- Subjects
ECDYSONE; INSECT hormones; LIGAND binding (Biochemistry); STREPSIPTERA; PHYLOGENY
- Publication
Development Genes & Evolution, 2005, Vol 215, Issue 4, p213
- ISSN
0949-944X
- Publication type
Article
- DOI
10.1007/s00427-004-0461-x