Purification of the human NF-E2 complex: cDNA cloning of the hematopoietic cell-specific subunit and evidence for an associated partner

Purification of the human NF-E2 complex: cDNA cloning of the hematopoietic cell-specific subunit and evidence for an associated partner
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人类 NF-E2 复合物的纯化:造血细胞特异性亚基的 cDNA 克隆和相关伙伴的证据

DOI:
10.1128/mcb.13.9.5604-5612.1993
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发表时间:
1993
影响因子:
5.3
通讯作者:
A. Nienhuis
A. Nienhuis
中科院分区:
生物学2区
文献类型:
--
作者:
P. Ney;N. Andrews;S. Jane;B. Safer;Mary Purucker;S. Weremowicz;C. Morton;S. C. Goff;Stuart H. Orkin;A. Nienhuis

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用DNA亲和层析法纯化了人珠蛋白基因座控制区结合蛋白NF-E2。利用小鼠p45 NF-E2 cDNA低严格性文库筛选技术克隆其组织特异性成分p45 NF-E2 (N. C. Andrews, H. Erdjument-Bromage, M. B. Davidson, P. Tempst, S. H. Orkin, Nature [j] 362:722-728, 1993)。利用荧光原位杂交技术将人p45 NF-E2基因定位在12q13染色体上。人类p45 NF-E2和小鼠p45 NF-E2是高度同源的碱基亮氨酸拉链(bZIP)蛋白,具有相同的dna结合域。免疫沉淀实验表明p45 NF-E2在体内与一个18 kda蛋白(p18)相关。由于bZIP蛋白以二聚体形式结合DNA,我们推断天然NF-E2必须是45和18 kda亚基的异源二聚体。尽管AP-1和CREB与NF-E2共化,但没有证据表明p45 NF-E2与p18以外的蛋白之间形成异源二聚体。因此,p18似乎是红细胞中p45 NF-E2的唯一特异性伴侣。克隆人类p45 NF-E2应该允许研究NF-E2在珠蛋白基因调控和红细胞分化中的作用。
The human globin locus control region-binding protein, NF-E2, was purified by DNA affinity chromatography. Its tissue-specific component, p45 NF-E2, was cloned by use of a low-stringency library screen with murine p45 NF-E2 cDNA (N. C. Andrews, H. Erdjument-Bromage, M. B. Davidson, P. Tempst, and S. H. Orkin, Nature [London] 362:722-728, 1993). The human p45 NF-E2 gene was localized to chromosome 12q13 by fluorescent in situ hybridization. Human p45 NF-E2 and murine p45 NF-E2 are highly homologous basic region-leucine zipper (bZIP) proteins with identical DNA-binding domains. Immunoprecipitation experiments demonstrated that p45 NF-E2 is associated in vivo with an 18-kDa protein (p18). Because bZIP proteins bind DNA as dimers, we infer that native NF-E2 must be a heterodimer of 45- and 18-kDa subunits. Although AP-1 and CREB copurified with NF-E2, no evidence was found for heterodimer formation between p45 NF-E2 and proteins other than p18. Thus, p18 appears to be the sole specific partner of p45 NF-E2 in erythroid cells. Cloning of human p45 NF-E2 should permit studies of the role of NF-E2 in globin gene regulation and erythroid differentiation.
DOI: 10.1126/science.6177045
发表时间: 1982-01-01
期刊: SCIENCE
影响因子: 56.9
作者:
MARTIN, P;PAPAYANNOPOULOU, T
通讯作者: PAPAYANNOPOULOU, T
DOI: 10.1126/science.2294592
发表时间: 1990-01-05
期刊: SCIENCE
影响因子: 56.9
作者:
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DOI: 10.1073/pnas.87.19.7693
发表时间: 1990
影响因子: 11.1
作者:
Moon,AM;Ley,TJ
通讯作者: Ley,TJ
佛波酯对细胞分化程序的抑制与细胞特异性转录因子(NF-E2)与红系特异性基因表达所需的增强子元件的结合的抑制同时发生。
DOI: --
发表时间: 1993
期刊: The Journal of biological chemistry
影响因子: --
作者:
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通讯作者: Wu,S
β-珠蛋白位点激活区域:组织、结构和功能的保护。
DOI: 10.1073/pnas.87.21.8207
发表时间: 1990
影响因子: 11.1
作者:
Li,QL;Zhou,B;Powers,P;Enver,T;Stamatoyannopoulos,G
通讯作者: Stamatoyannopoulos,G