scholarly journals Phosphoprotein PII from Cyanobacteria. Analysis of Functional Conservation with the PII Signal-Transduction Protein from Escherichia Coli

1997 ◽  
Vol 244 (3) ◽  
pp. 869-875 ◽  
Author(s):  
Karl Forchhammer ◽  
Andrea Hedler
Keyword(s):  
Escherichia Coli ◽  
Signal Transduction ◽  
Functional Conservation ◽  
Signal Transduction Protein

X-ray structure of the signal transduction protein from Escherichia coli at 1.9 Å

1996 ◽  
Vol 52 (1) ◽  
pp. 93-104 ◽  
Author(s):  
P. D. Carr ◽  
E. Cheah ◽  
P. M. Suffolk ◽  
S. G. Vasudevan ◽  
N. E. Dixon ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Signal Transduction ◽  
X Ray ◽  
Signal Transduction Protein

Complex formation between AmtB and GlnK: an ancestral role in prokaryotic nitrogen control

2005 ◽  
Vol 33 (1) ◽  
pp. 170-172 ◽  
Author(s):  
A. Javelle ◽  
M. Merrick
Keyword(s):  
Escherichia Coli ◽  
Signal Transduction ◽  
Sensory System ◽  
Transport Proteins ◽  
Ammonium Transport ◽  
Nitrogen Control ◽  
Regulatory Processes ◽  
Signal Transduction Protein ◽  
Pii Proteins ◽  
Invariant Coupling

Ammonium transport proteins belonging to the Amt family are ubiquitous in prokaryotes. In Escherichia coli, the AmtB protein and the associated PII signal transduction protein (GlnK) have recently been recognized as an ammonium sensory system that effectively couples the intracellular nitrogen regulation (Ntr) system to external changes in ammonium availability. Given the almost invariant coupling of AmtB and GlnK in bacteria and archaea it seems probable that these two proteins may constitute an ancestral nitrogen-responsive system that has been coupled with a variety of unrelated nitrogen regulatory processes, which are now found in prokaryotes. The multiplicity of PII proteins could therefore be considered to have evolved from an ancestral GlnK-like protein and to have subsequently been adapted to control many other aspects of nitrogen metabolism.

scholarly journals Signal Transduction and Osmoregulation in Escherichia coli

1989 ◽  
Vol 264 (36) ◽  
pp. 21633-21637 ◽  
Author(s):  
K Kanamaru ◽  
H Aiba ◽  
S Mizushima ◽  
T Mizuno
Keyword(s):  
Escherichia Coli ◽  
Signal Transduction
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