Genetic and biochemical analysis of the transmembrane domain of Arabidopsis 3‐hydroxy‐3‐methylglutaryl coenzyme A reductase

Genetic and biochemical analysis of the transmembrane domain of Arabidopsis 3‐hydroxy‐3‐methylglutaryl coenzyme A reductase
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拟南芥3-羟基-3-甲基戊二酰辅酶A还原酶跨膜结构域的遗传和生化分析

DOI:
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发表时间:
1997
影响因子:
4
通讯作者:
M. Learned
M. Learned
中科院分区:
生物学2区
文献类型:
--
作者:
E. Re;S. Brugger;M. Learned

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我们研究了拟南芥3 -羟基- 3 -甲基戊二酰辅酶A还原酶(Hmg1p)的氨基端膜锚定结构域,这是类异戊二烯生物合成途径的关键酶。利用体外和体内方法,我们分析了一系列重组衍生物,以确定在确定Hmg1p跨膜拓扑结构中起作用的关键结构元件。基于我们的研究结果,我们提出了Hmg1p的拓扑模型,其中酶跨越脂质双分子层两次。我们已经证明了两个跨膜片段,称为TMS1和TMS2,在结构和功能上指导报告蛋白的靶向和定向的能力是不一样的。此外,我们提供的证据表明,蛋白质的极端氨基端和羧基端都存在于细胞质中。因此,该模型为未来研究跨膜结构域在植物细胞中Hmg1p的靶向和调控中的作用提供了关键基础。j .细胞。生物化学,65:443 - 459。©1997 Wiley‐Liss Inc。
We have examined the amino terminal membrane anchoring domain of Arabidopsis thaliana 3‐hydroxy‐3‐methylglutaryl coenzyme A reductase (Hmg1p), a key enzyme of the isoprenoid biosynthetic pathway. Using both in vitro and in vivo approaches, we have analyzed a series of recombinant derivatives to identify key structural elements which play a role in defining Hmg1p transmembrane topology. Based on our results, we have proposed a topological model for Hmg1p in which the enzyme spans the lipid bilayer twice. We have shown the two transmembrane segments, designated TMS1 and TMS2, to be structurally and functionally inequivalent in their ability to direct the targeting and orientation of reporter proteins. Furthermore, we provide evidence indicating both the extreme amino terminal end and carboxyl terminal domain of the protein reside in the cytosol. This model therefore provides a key basis for the future examination of the role of the transmembrane domain in the targeting and regulation of Hmg1p in plant cells. J. Cell. Biochem. 65:443–459. © 1997 Wiley‐Liss Inc.
DOI: 10.1016/s0021-9258(18)45839-5
发表时间: 1990-12
期刊: The Journal of biological chemistry
影响因子: --
作者:
K. Chun;S. Bar-Nun;R. D. Simoni
通讯作者: K. Chun;S. Bar-Nun;R. D. Simoni
DOI: 10.1016/s0021-9258(19)50651-2
发表时间: 1992-02
期刊: The Journal of biological chemistry
影响因子: --
作者:
E. Olender;R. Simon
通讯作者: E. Olender;R. Simon
DOI: --
发表时间: 1982
期刊: The Journal of biological chemistry
影响因子: --
作者:
Karp,DR;Atkinson,JP;Shreffler,DC
通讯作者: Shreffler,DC
DOI: 10.1016/s0021-9258(18)89764-2
发表时间: 1985-01
期刊: The Journal of biological chemistry
影响因子: --
作者:
Laura Liscum;J. Finer-Moore;Robert M. Stroud;K. Luskey;M. Brown;J. L. Goldstein
通讯作者: Laura Liscum;J. Finer-Moore;Robert M. Stroud;K. Luskey;M. Brown;J. L. Goldstein
膜结构域在 3-羟基-3-甲基戊二酰辅酶 A 还原酶降解调节中的作用。
DOI: --
发表时间: 1992
期刊: The Journal of biological chemistry
影响因子: --
作者:
Chun,KT;Simoni,RD
通讯作者: Simoni,RD