XIHbox 8, an endoderm-specific Xenopus homeodomain protein, is closely related to a mammalian insulin gene transcription factor.
XIHbox 8, an endoderm-specific Xenopus homeodomain protein, is closely related to a mammalian insulin gene transcription factor.
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XIHbox 8 是一种内胚层特异性爪蟾同源域蛋白,与哺乳动物胰岛素基因转录因子密切相关。
DOI:
10.1210/mend.8.6.7935494
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发表时间:
1994
影响因子:
--
通讯作者:
R. Stein
中科院分区:
文献类型:
--
作者:
M. Peshavaria;L. Gamer;E. Henderson;G. Teitelman;C. Wright;R. Stein
The cis-acting sequences that mediate insulin gene expression exclusively in pancreatic islet beta-cells are localized within the 5'-flanking region between nucleotides -340 and -91. We have identified an evolutionarily conserved, A+T-rich element at -201/-196 basepairs in the rat insulin II gene that is essential for efficient expression in beta-cells. Affinity-purified antibody to the XIHbox 8 protein super-shifted the major beta-cell-activator factor complex binding to the -201/-196 element. XIHbox 8 is a Xenopus endoderm-specific homeodomain protein whose expression is restricted to the nucleus of endodermal cells of the duodenum and developing pancreas. Antibody to XIHbox 8 specifically interacts with a 47-kilodalton protein present in this DNA complex. Immunohistochemical studies revealed XIHbox 8-like proteins within the nucleus of almost all mouse islet beta-cells and a subset of islet alpha- and beta-cells. These results are consistent with the proposal that an XIHbox 8-related homeoprotein of 47 kilodalton is required for expression of the mammalian insulin gene in beta-cells. Experiments conducted with antiserum raised to somatostatin transcription factor-1 (STF-1), a recently isolated mammalian XIHbox 8-related homeoprotein, indicate that the STF-1 protein is the mammalian homolog of Xenopus XIHbox 8.
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影响因子:
56.9
作者:
EDLUND, T;WALKER, MD;RUTTER, WJ
通讯作者:
RUTTER, WJ
DOI:
10.1242/dev.105.4.787
发表时间:
1989
期刊:
Development (Cambridge, England)
影响因子:
--
作者:
Wright,CV;Schnegelsberg,P;DeRobertis,EM
通讯作者:
DeRobertis,EM
影响因子:
5.3
作者:
Shelton,KD;Franklin,AJ;Khoor,A;Beechem,J;Magnuson,MA
通讯作者:
Magnuson,MA
影响因子:
2.4
作者:
Miyamoto,Toshinobu;Kawahara,Atsuo;Teufel,Andreas;Mukhopadhyay,Mahua;Zhao,Yangu;Dawid,IgorB;Westphal,Heiner
通讯作者:
Westphal,Heiner
DOI:
--
发表时间:
1990
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Faber,M;Sealy,L
通讯作者:
Sealy,L