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Fig. 1 Phylogenetic analysis of retinoid-X receptor proteins. Amino acid sequences were aligned by Clustal-X and trimmed to include unambiguously aligned regions; phylogenetic analysis used the neighbor-joining method (Saitou and Nei, 1987). Numbers at nodes are bootstrap values out of 1000 runs. Alignments are available on request. Species abbreviations: Apme, Apis mellifera (honey bee); Brfl, Branchiostoma floridae (amphioxus); Caau, Carassius auratus (goldfish); Dare, Danio rerio (zebrafish); Gaga, Gallus gallus (chicken); Hosa, Homo sapiens (human); Lomi, Locusta migratoria (locust); Lyst, Lymnaea stagnalis (great pond snail); Mumu, Mus musculus (mouse); Orla, Oryzias latipes (medaka); Paol, Paralichthys olivaceus (flounder); Pomi, Polyandrocarpa misakiensis (an ascidian Urochordate); Teni, Tetraodon nigroviridis (pufferfish); Thcl, Thais clavigera (rock shell snail); Xela, Xenopus laevis (frog). Sequence accession numbers: RXRA_Hosa_AAH63827; Rxra_Mumu_NP_035435; Rxra_Gaga_XP_415426; Rxra_Xela_P51128; Rxra_Caau_AAO22211; rxra_Dare_NP_571228; RXRG_Hosa_NP_008848; Rxrg_Mumu_NP_033133; Rxrg_Gaga_NP_990625; Rxrg_Xela_P51129; Rxrg_Dare_AAH59576; Rxra_Paol_BAB71758; Hosa_CAI95622; Rxrb_Mumu_NP_035436; Rxrb_Xela_AAH72132; Rxrb_Dare_AAH54649; Rxrg_Paol_BAB71759; Rxrb_Orla_BAD93255; rxrd_Dare_NP_571313; Rxr_Teni_CAG12025; Rxr_Pomi_BAA82618; Rxr_Brfl_AAM46151; Rxr_Thcl_AAU12572; Rxr_Lyst_AAW34268; Usp_Apme_NP_001011634; Rxr1_Lomi_AAQ55293.
Reprinted from Gene expression patterns : GEP, 6(5), Tallafuss, A., Hale, L.A., Yan, Y.L., Dudley, L., Eisen, J.S., and Postlethwait, J.H., Characterization of retinoid-X receptor genes rxra, rxrba, rxrbb and rxrg during zebrafish development, 556-565, Copyright (2006) with permission from Elsevier. Full text @ Gene Expr. Patterns