Studies of pH-Sensitive Optical Properties of the deGFP1 Green Fluorescent Protein Using a Unique Polarizable Force Field

2014 ◽  
Vol 10 (8) ◽  
pp. 3492-3502 ◽  
Author(s):  
I. Harczuk ◽  
N. Arul Murugan ◽  
O. Vahtras ◽  
H. Ågren
2013 ◽  
Vol 29 (12) ◽  
pp. 2543-2550
Author(s):  
YU Hai-Ling ◽  
◽  
ZHANG Meng-Ying ◽  
HONG Bo ◽  
CHENG Zhi Qiang ◽  
...  

2000 ◽  
Vol 118 (4) ◽  
pp. A712
Author(s):  
Colin Blackmore ◽  
Lisa Bishop ◽  
Andrea Varro ◽  
Rod Dimaline ◽  
David V. Gallacher ◽  
...  

PLoS ONE ◽  
2011 ◽  
Vol 6 (5) ◽  
pp. e19598 ◽  
Author(s):  
Yusuke V. Morimoto ◽  
Seiji Kojima ◽  
Keiichi Namba ◽  
Tohru Minamino

2005 ◽  
Vol 119 (4) ◽  
pp. 368-378 ◽  
Author(s):  
Jin Zou ◽  
Yiming Ye ◽  
Kristy Welshhans ◽  
Monica Lurtz ◽  
April L. Ellis ◽  
...  

PLoS ONE ◽  
2012 ◽  
Vol 7 (10) ◽  
pp. e47331 ◽  
Author(s):  
Jion M. Battad ◽  
Daouda A. K. Traore ◽  
Emma Byres ◽  
Jamie Rossjohn ◽  
Rodney J. Devenish ◽  
...  

2004 ◽  
Vol 381 (3) ◽  
pp. 581-585 ◽  
Author(s):  
Francesco M. LASORSA ◽  
Pasquale SCARCIA ◽  
Ralf ERDMANN ◽  
Ferdinando PALMIERI ◽  
Hanspeter ROTTENSTEINER ◽  
...  

The yeast peroxisomal adenine nucleotide carrier, Ant1p, was shown to catalyse unidirectional transport in addition to exchange of substrates. In both transport modes, proton movement occurs. Nucleotide hetero-exchange is H+-compensated and electroneutral. Furthermore, microscopic fluorescence imaging of a pH-sensitive green fluorescent protein targeted to peroxisomes shows that Ant1p is involved in the formation of a ΔpH across the peroxisomal membrane, acidic inside.


2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Keiichirou Akiba ◽  
Katsuyuki Tamehiro ◽  
Koki Matsui ◽  
Hayata Ikegami ◽  
Hiroki Minoda

Abstract Green fluorescent protein (GFP) and its variants are an essential tool for visualizing functional units in biomaterials. This is achieved by the fascinating optical properties of them. Here, we report novel optical properties of enhanced GFP (EGFP), which is one of widely used engineered variants of the wild-type GFP. We study the electron-beam-induced luminescence, which is known as cathodoluminescence (CL), using the hybrid light and transmission electron microscope. Surprisingly, even from the same specimen, we observe a completely different dependences of the fluorescence and CL on the electron beam irradiation. Since light emission is normally independent of whether an electron is excited to the upper level by light or by electron beam, this difference is quite peculiar. We conclude that the electron beam irradiation causes the local generation of a new redshifted form of EGFP and CL is preferentially emitted from it. In addition, we also find that the redshifted form is rather robust to electron bombardment. These remarkable properties can be utilized for three-dimensional reconstruction without electron staining in focused ion beam/scanning electron microscopy technology and provide significant potential for simultaneously observing the functional information specified by super-resolution CL imaging and the structural information at the molecular level obtained by electron microscope.


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