Structural models of the bovine papillomavirus E5 protein

Structural models of the bovine papillomavirus E5 protein
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牛乳头瘤病毒E5蛋白的结构模型

DOI:
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发表时间:
1998
期刊:
Proteins: Structure, Function, and Bioinformatics
影响因子:
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通讯作者:
Steven O. Smith
Steven O. Smith
中科院分区:
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文献类型:
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作者:
Toral Surti;O. Klein;K. Aschheim;D. DiMaio;Steven O. Smith

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牛乳头瘤病毒E5蛋白被认为是一种II型完整膜蛋白,在转化细胞中以二硫键连接的同源二聚体形式存在。偏光红外测试表明,膜双层中的E5二聚体主要是α螺旋的,并且具有跨膜取向。对螺旋-螺旋构象的计算搜索揭示了两种可能的低能二聚体结构。这些结果与以前对E5蛋白的突变研究相关联,表明E5二聚体可能作为二聚化和配体非依赖性激活PDGF-β受体的分子支架。我们认为在E5二聚体的每一面都有一个PDGF-β受体分子与一个E5单体的Gln17和另一个E5单体的Asp33直接相互作用。这个模型解释了Gln17和Asp33形成复合体的需要,并解释了E5蛋白的二聚化对于细胞转化是必不可少的遗传结果。蛋白质33:601-612,1998。©1998 Wiley-Liss,Inc.
The bovine papillomavirus E5 protein is thought to be a type II integral membrane protein that exists as a disulfide‐linked homodimer in transformed cells. Polarized‐infrared measurements show that the E5 dimer in membrane bilayers is largely α‐helical and has a transmembrane orientation. Computational searches of helix‐helix conformations reveal two possible low‐energy dimer structures. Correlation of these results with previous mutagenesis studies on the E5 protein suggests how the E5 dimer may serve as a molecular scaffold for dimerization and ligand‐independent activation of the PDGF‐β receptor. We propose that on each face of the E5 dimer a PDGF‐β receptor molecule interacts directly with Gln17 from one E5 monomer and with Asp33 from the other E5 monomer. This model accounts for the requirement of Gln17 and Asp33 for complex formation and explains genetic results that dimerization of the E5 protein is essential for cell transformation. Proteins 33:601–612, 1998. © 1998 Wiley‐Liss, Inc.
DOI: 10.1021/bi9519258
发表时间: 1996-01-23
期刊: BIOCHEMISTRY
影响因子: 2.9
作者:
Killian, JA;Salemink, I;Greathouse, DV
通讯作者: Greathouse, DV
DOI: 10.1073/pnas.91.11.4634
发表时间: 1994
影响因子: 11.1
作者:
Meyer,AN;Xu,YF;Webster,MK;Smith,AE;Donoghue,DJ
通讯作者: Donoghue,DJ
牛乳头瘤病毒 E5 转化蛋白与转化小鼠细胞中活化的血小板衍生生长因子受体之间存在稳定关联。
DOI: 10.1073/pnas.89.15.6736
发表时间: 1992
影响因子: 11.1
作者:
Petti,L;DiMaio,D
通讯作者: DiMaio,D
DOI: 10.1016/s0021-9258(18)42569-0
发表时间: 1992-04
期刊: The Journal of biological chemistry
影响因子: --
作者:
Mark A. LemmonS;J. Flanagan;J. Hunt;B. Adair;Barbara-Jean Bormanng;Christopher E. Dempseyll;D. Engelman
通讯作者: Mark A. LemmonS;J. Flanagan;J. Hunt;B. Adair;Barbara-Jean Bormanng;Christopher E. Dempseyll;D. Engelman
DOI: 10.1021/bi00166a003
发表时间: 1992-12
期刊: Biochemistry
影响因子: 2.9
作者:
H. Treutlein;M. Lemmon;D. Engelman;A. Brunger
通讯作者: H. Treutlein;M. Lemmon;D. Engelman;A. Brunger