Validating an artificial organelle: Studies of lipid droplet-specific proteins on adiposome platform.

Validating an artificial organelle: Studies of lipid droplet-specific proteins on adiposome platform.
复制标题

验证人工细胞器:脂肪体平台上脂滴特异性蛋白质的研究

DOI:
10.1016/j.isci.2021.102834
复制
发表时间:
2021-08-20
期刊:
影响因子:
5.8
通讯作者:
Liu P
Liu P
中科院分区:
综合性期刊2区
文献类型:
--
作者:
Ma X;Zhi Z;Zhang S;Zhou C;Mechler A;Liu P

文献摘要

参考文献

被引文献

相似文献

迫切需要新的策略来表征脂滴(LD)的功能。在这里,脂肪体,人工LD模拟平台,通过比较在体外生物测定进行验证。Scatchard分析发现,脂周蛋白2(PLIN 2)与脂肪体表面的结合是可饱和的。发现磷脂酰肌醇(PtdIns)抑制PLIN 2结合,而其不阻碍围脂蛋白3(PLIN 3)。结合突变的结构分析揭示PLIN 2的第73位谷氨酸对于PtdIns对PLIN 2结合的影响是重要的。此外,脂肪体也被发现是一个理想的平台,原位测定脂肪甘油三酯脂肪酶(ATGL)的酶活性。发现ATGL的显著丝氨酸突变体导致脂肪酶活性的丧失。我们的研究表明,脂肪体作为一个强大的,可操纵的模型系统,模拟LD的功能,在体外LD蛋白的结合和酶活性的研究。验证了人工细胞器用于LD蛋白的靶向和调节进行了PLIN 2靶向人工LD的结合亲和力分析PtdIns和PLIN 2中的第73位谷氨酸影响PLIN 2靶向LD通过人工LD证明和测量了ATGL的原位酶活性细胞生物学;细胞生物学的功能方面;生物物理学
New strategies are urgently needed to characterize the functions of the lipid droplet (LD). Here, adiposome, an artificial LD mimetic platform, was validated by comparative in vitro bioassays. Scatchard analysis found that the binding of perilipin 2 (PLIN2) to the adiposome surface was saturable. Phosphatidylinositol (PtdIns) was found to inhibit PLIN2 binding while it did not impede perilipin 3 (PLIN3). Structural analysis combined with mutagenesis revealed that the 73rd glutamic acid of PLIN2 is significant for the effect of PtdIns on the PLIN2 binding. Furthermore, adiposome was also found to be an ideal platform for in situ enzymatic activity measurement of adipose triglyceride lipase (ATGL). The significant serine mutants of ATGL were found to cause the loss of lipase activity. Our study demonstrates the adiposome as a powerful, manipulatable model system that mimics the function of LD for binding and enzymatic activity studies of LD proteins in vitro. An artificial organelle was validated for the targeting and regulation of LD proteins Binding affinity analysis of PLIN2 targeting on artificial LD was performed PtdIns and the 73rd glutamic acid in PLIN2 affect the targeting of PLIN2 to LD In situ enzymatic activity of ATGL was demonstrated and measured via artificial LD Cell biology; Functional aspects of cell biology; Biophysics
DOI: 10.1074/jbc.m115.682203
发表时间: 2015-10-30
期刊: The Journal of biological chemistry
影响因子: --
作者:
Boeszoermenyi A;Nagy HM;Arthanari H;Pillip CJ;Lindermuth H;Luna RE;Wagner G;Zechner R;Zangger K;Oberer M
通讯作者: Oberer M
DOI: 10.1093/bioinformatics/btv362
发表时间: 2015-10-15
期刊: Bioinformatics (Oxford, England)
影响因子: --
作者:
Liu W;Xie Y;Ma J;Luo X;Nie P;Zuo Z;Lahrmann U;Zhao Q;Zheng Y;Zhao Y;Xue Y;Ren J
通讯作者: Ren J
DOI: 10.1093/bioinformatics/btn392
发表时间: 2008-09-15
期刊: BIOINFORMATICS
影响因子: 5.8
作者:
Gautier, Romain;Douguet, Dominique;Drin, Guillaume
通讯作者: Drin, Guillaume
DOI: 10.1194/jlr.m500290-jlr200
发表时间: 2005-11-01
影响因子: 6.5
作者:
Lake, AC;Sun, Y;Gimeno, RE
通讯作者: Gimeno, RE
DOI: 10.7554/elife.07485
发表时间: 2015-11-26
期刊: eLife
影响因子: 7.7
作者:
Barneda D;Planas-Iglesias J;Gaspar ML;Mohammadyani D;Prasannan S;Dormann D;Han GS;Jesch SA;Carman GM;Kagan V;Parker MG;Ktistakis NT;Klein-Seetharaman J;Dixon AM;Henry SA;Christian M
通讯作者: Christian M