scholarly journals Ion Channels in Arabidopsis Plasma Membrane : Transport Characteristics and Involvement in Light-Induced Voltage Changes

1992 ◽  
Vol 99 (1) ◽  
pp. 96-102 ◽  
Author(s):  
E. P. Spalding ◽  
C. L. Slayman ◽  
M. H. M. Goldsmith ◽  
D. Gradmann ◽  
A. Bertl
2012 ◽  
Vol 393 (10) ◽  
pp. 1141-1150 ◽  
Author(s):  
Ali Reza Nazmi ◽  
Gabriel Ozorowski ◽  
Milena Pejic ◽  
Julian P. Whitelegge ◽  
Volker Gerke ◽  
...  

Abstract Annexin A2 (AnxA2), a Ca2+-regulated phospholipid binding protein involved in membrane-cytoskeleton contacts and membrane transport, exists in two physical states, as a monomer or in a heterotetrameric complex mediated by S100A10. Formation of the AnxA2-S100A10 complex is of crucial regulatory importance because only the complex is firmly anchored in the plasma membrane, where it functions in the plasma membrane targeting/recruitment of certain ion channels and receptors. The S100A10 binding motif is located in the first 12 residues of the AnxA2 N-terminal domain, but conflicting reports exist as to the importance of N-terminal AnxA2 acetylation with regard to S100A10 binding. We show here that AnxA2 is subject to N-terminal modification when expressed heterologously in Escherichia coli. Met1 is removed and Ser2 is acetylated, yielding the same modification as the authentic mammalian protein. Bacterially expressed and N-terminally acetylated AnxA2 binds S100A10 with an affinity comparable to AnxA2 from porcine tissue and is capable of forming the AnxA2-S100A10 heterotetramer. Complex formation is competitively inhibited by acetylated but not by non-acetylated peptides covering the N-terminal AnxA2 sequence. These results demonstrate that N-terminal acetylation of AnxA2 is required for S100A10 binding and that this common eukaryotic modification is also obtained upon expression in bacteria.


Author(s):  
A. Koivisto ◽  
T. Ringer ◽  
U. Ruß ◽  
J. Nedergaard ◽  
D. Siemen

1998 ◽  
Vol 53 (3) ◽  
pp. 408-414 ◽  
Author(s):  
Jacqueline Loeper ◽  
Annie Le Berre ◽  
Denis Pompon

1992 ◽  
pp. 225-236
Author(s):  
B. R. Terry ◽  
S. D. Tyerman ◽  
G. P. Findlay

2013 ◽  
Vol 27 (3) ◽  
pp. 249-262 ◽  
Author(s):  
Kristiina Kanerva ◽  
Riikka-Liisa Uronen ◽  
Tomas Blom ◽  
Shiqian Li ◽  
Robert Bittman ◽  
...  

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