Quantitative analysis of autophagy-related protein stoichiometry by fluorescence microscopy.

Quantitative analysis of autophagy-related protein stoichiometry by fluorescence microscopy.
复制标题

DOI:
10.1083/jcb.200711112
复制
发表时间:
2008-07-14
期刊:
The Journal of cell biology
影响因子:
--
通讯作者:
Klionsky DJ
Klionsky DJ
中科院分区:
其他
文献类型:
--
作者:
Geng J;Baba M;Nair U;Klionsky DJ

文献摘要

参考文献

被引文献

相似文献

在酵母中,已鉴定出约31种自噬相关(Atg)蛋白。它们大多位于噬菌体组装位点(PAS),尽管PAS的功能大多尚不清楚。后者的一个原因是缺乏关于该位点Atg蛋白的化学计量学信息。我们报道了荧光显微镜在PAS上研究Atg蛋白数量的应用。我们发现,PAS上Atg11数量的增加增强了Atg8和Atg9在该位点的招募,并促进了更多细胞质-液泡靶向囊泡的形成。在自噬诱导下,大多数Atg蛋白在PAS位点的数量保持不变,而我们看到at8和9在该位点的募集增强。在自噬过程中,PAS上at8的量呈周期性变化,表明自噬体的形成。该方法的应用和进一步的分析将为Atg蛋白的功能提供更多的见解。
In yeast, ∼31 autophagy-related (Atg) proteins have been identified. Most of them reside at the phagophore assembly site (PAS), although the function of the PAS mostly remains unclear. One reason for the latter is the lack of stoichiometric information regarding the Atg proteins at this site. We report the application of fluorescence microscopy to study the amount of Atg proteins at the PAS. We find that an increase in the amount of Atg11 at the PAS enhances the recruitment of Atg8 and Atg9 to this site and facilitates the formation of more cytoplasm-to-vacuole targeting vesicles. In response to autophagy induction, the amount of most Atg proteins remains unchanged at the PAS, whereas we see an enhanced recruitment of Atg8 and 9 at this site. During autophagy, the amount of Atg8 at the PAS showed a periodic change, indicating the formation of autophagosomes. Application of this method and further analysis will provide more insight into the functions of Atg proteins.
DOI: 10.1083/jcb.139.7.1687
发表时间: 1997-12-29
影响因子: 7.8
作者:
Baba, M;Osumi, M;Scott, SV;Klionsky, DJ;Ohsumi, Y
通讯作者: Ohsumi, Y
酵母突变体在细胞质中的分离和表征与液泡蛋白靶向途径的分离。
DOI: 10.1083/jcb.131.3.591
发表时间: 1995-11
影响因子: 7.8
作者:
HARDING, TM;MORANO, KA;SCOTT, SV;KLIONSKY, DJ
通讯作者: KLIONSKY, DJ
DOI: 10.1038/35044114
发表时间: 2000-11-23
期刊: NATURE
影响因子: 64.8
作者:
Ichimura, Y;Kirisako, T;Ohsumi, Y
通讯作者: Ohsumi, Y
DOI: 10.1016/j.cell.2007.05.021
发表时间: 2007-07-13
期刊: CELL
影响因子: 64.5
作者:
Nakatogawa, Hitoshi;Ichimura, Yoshinobu;Ohsumi, Yoshinori
通讯作者: Ohsumi, Yoshinori
DOI: 10.1091/mbc.e04-10-0894
发表时间: 2005-07-01
影响因子: 3.3
作者:
Cheong, H;Yorimitsu, T;Klionsky, DJ
通讯作者: Klionsky, DJ