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XB-ART-28481
Nucleic Acids Res 1986 Nov 11;1421:8669-80.
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Conserved sequence motifs upstream from the co-ordinately expressed vitellogenin and apoVLDLII genes of chicken.

van het Schip F , Strijker R , Samallo J , Gruber M , Geert AB .


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The vitellogenin and apoVLDLII yolk protein genes of chicken are transcribed in the liver upon estrogenization. To get information on putative regulatory elements, we compared more than 2 kb of their 5' flanking DNA sequences. Common sequence motifs were found in regions exhibiting estrogen-induced changes in chromatin structure. Stretches of alternating pyrimidines and purines of about 30-nucleotides long are present at roughly similar positions. A distinct box of sequence homology in the chicken genes also appears to be present at a similar position in front of the vitellogenin genes of Xenopus laevis, but is absent from the estrogen-responsive egg-white protein genes expressed in the oviduct. In front of the vitellogenin (position -595) and the VLDLII gene (position -548), a DNA element of about 300 base-pairs was found, which possesses structural characteristics of a mobile genetic element and bears homology to the transposon-like Vi element of Xenopus laevis.

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References [+] :
Arnberg, Isolation and characterization of genomic clones covering the chicken vitellogenin gene. 1981, Pubmed, Xenbase