Quantitative analysis of autophagy-related protein stoichiometry by fluorescence microscopy.
Quantitative analysis of autophagy-related protein stoichiometry by fluorescence microscopy.
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DOI:
10.1083/jcb.200711112
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发表时间:
2008-07-14
期刊:
影响因子:
--
通讯作者:
Klionsky DJ
中科院分区:
文献类型:
--
作者:
Geng J;Baba M;Nair U;Klionsky DJ
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.
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影响因子:
7.8
作者:
Baba, M;Osumi, M;Scott, SV;Klionsky, DJ;Ohsumi, Y
通讯作者:
Ohsumi, Y
影响因子:
7.8
作者:
HARDING, TM;MORANO, KA;SCOTT, SV;KLIONSKY, DJ
通讯作者:
KLIONSKY, DJ
影响因子:
64.8
作者:
Ichimura, Y;Kirisako, T;Ohsumi, Y
通讯作者:
Ohsumi, Y
影响因子:
64.5
作者:
Nakatogawa, Hitoshi;Ichimura, Yoshinobu;Ohsumi, Yoshinori
通讯作者:
Ohsumi, Yoshinori
影响因子:
3.3
作者:
Cheong, H;Yorimitsu, T;Klionsky, DJ
通讯作者:
Klionsky, DJ