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鸡的卵黄蛋白原和载脂蛋白VLDLII基因协同表达上游的保守序列基序。

Conserved sequence motifs upstream from the co-ordinately expressed vitellogenin and apoVLDLII genes of chicken.

作者信息

van het Schip F, Strijker R, Samallo J, Gruber M, Geert A B

出版信息

Nucleic Acids Res. 1986 Nov 11;14(21):8669-80. doi: 10.1093/nar/14.21.8669.

Abstract

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.

摘要

雌激素化后,鸡的卵黄蛋白原和载脂蛋白VLDLII卵黄蛋白基因在肝脏中被转录。为了获取有关假定调控元件的信息,我们比较了它们超过2 kb的5'侧翼DNA序列。在染色质结构呈现雌激素诱导变化的区域发现了共同的序列基序。大约30个核苷酸长的嘧啶和嘌呤交替序列在大致相似的位置出现。鸡基因中一个独特的序列同源框似乎也存在于非洲爪蟾卵黄蛋白原基因前方的相似位置,但在输卵管中表达的雌激素反应性蛋清蛋白基因中不存在。在卵黄蛋白原(位置-595)和VLDLII基因(位置-548)前方,发现了一个约300个碱基对的DNA元件,它具有可移动遗传元件的结构特征,并且与非洲爪蟾的转座子样Vi元件具有同源性。

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Vitellogenesis and the vitellogenin gene family.卵黄生成与卵黄蛋白原基因家族
Science. 1981 Apr 17;212(4492):298-304. doi: 10.1126/science.7209528.

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