Subcellular Localization of Transiently Expressed Fluorescent Fusion Proteins

Author(s):  
David A. Collings
2018 ◽  
Vol 79 (3) ◽  
pp. 546-556 ◽  
Author(s):  
Dana S. Neel ◽  
David V. Allegakoen ◽  
Victor Olivas ◽  
Manasi K. Mayekar ◽  
Golzar Hemmati ◽  
...  

Biologia ◽  
2007 ◽  
Vol 62 (5) ◽  
Author(s):  
Wei Sun ◽  
Ziyi Cao ◽  
Yan Li ◽  
Yanxiu Zhao ◽  
Hui Zhang

AbstractA modified Agrobacterium-mediated transformation protocol has been successfully used for transient expression of the intrinsically fluorescent proteins and their fusion proteins in onion epidermis. The mean of the transformed cells rate per peel is about 10.5±0.9%, while that of the particle bombardment method is at the range 2.0±0.4%. To compare with the prevailing method of micro-projectile bombardment, the modified Agrobacterium-mediated transformation may provide with higher efficiency and even more simplified manipulability on a lower budget.


2007 ◽  
Vol 401 (3) ◽  
pp. 701-709 ◽  
Author(s):  
Matthew P. A. Henderson ◽  
Yeen Ting Hwang ◽  
John M. Dyer ◽  
Robert T. Mullen ◽  
David W. Andrews

The molecular mechanisms that determine the correct subcellular localization of proteins targeted to membranes by tail-anchor sequences are poorly defined. Previously, we showed that two isoforms of the tung oil tree [Vernicia (Aleurites) fordii] tail-anchored Cb5 (cytochrome b5) target specifically to ER (endoplasmic reticulum) membranes both in vivo and in vitro [Hwang, Pelitire, Henderson, Andrews, Dyer and Mullen (2004) Plant Cell 16, 3002–3019]. In the present study, we examine the targeting of various tung Cb5 fusion proteins and truncation mutants to purified intracellular membranes in vitro in order to assess the importance of the charged CTS (C-terminal sequence) in targeting to specific membranes. Removal of the CTS from tung Cb5 proteins resulted in efficient binding to both ER and mitochondria. Results from organelle competition, liposome-binding and membrane proteolysis experiments demonstrated that removal of the CTS results in spontaneous insertion of tung Cb5 proteins into lipid bilayers. Our results indicate that the CTSs from plant Cb5 proteins provide ER specificity by preventing spontaneous insertion into incorrect subcellular membranes.


2021 ◽  
Vol 2021 (2) ◽  
pp. pdb.prot102145
Author(s):  
Clara L. Kielkopf ◽  
William Bauer ◽  
Ina L. Urbatsch

Lipids ◽  
2015 ◽  
Vol 50 (4) ◽  
pp. 427-436 ◽  
Author(s):  
Yong-Woo Jun ◽  
Sangyeol Kim ◽  
Kun-Hyung Kim ◽  
Jin-A Lee ◽  
Chae-Seok Lim ◽  
...  

1997 ◽  
Vol 28 ◽  
pp. S100
Author(s):  
Kensuke Hayashi ◽  
Tomoaki Shirao

2004 ◽  
Vol 5 (4) ◽  
pp. 342-353 ◽  
Author(s):  
Ella Palmer ◽  
Tom Freeman

Reverse transfection microarrays were described recently as a high throughput method for studying gene function. We have investigated the use of this technology for determining the subcellular localization of proteins. Genes encoding 16 proteins with a variety of functions were placed in Gateway expression constructs with 3′ or 5′ green fluorescent protein (GFP) tags. These were then packaged in transfection reagent and spotted robotically onto a glass slide to form a reverse transfection array. HEK293T cells were grown over the surface of the array until confluent and GFP fluorescence visualized by confocal microscopy. All C-terminal fusion proteins localized to cellular compartments in accordance with previous studies and/or bioinformatic predictions. However, less than half of the N-terminal fusion proteins localized correctly. Of those that were not in concordance with the C-terminal tagged proteins, half did not exhibit expression and the remainder had differing subcellular localizations to the C-terminal fusion protein. This data indicates that N-terminal tagging with GFP adversely affects the protein localization in reverse transfection assays, whereas tagging with GFP at the C-terminal is generally better in preserving the localization of the native protein. We discuss these results in the context of developing high-throughput subcellular localization assays based on the reverse transfection array technology.


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