scholarly journals Absolute requirement of cyclic nucleotide in the activation of the G141Q mutant cAMP receptor protein from Escherichia coli.

1994 ◽  
Vol 269 (49) ◽  
pp. 30781-30784 ◽  
Author(s):  
X Cheng ◽  
J C Lee
Keyword(s):  
Escherichia Coli ◽  
Cyclic Nucleotide ◽  
Receptor Protein ◽  
Camp Receptor Protein ◽  
Absolute Requirement ◽  
Camp Receptor

scholarly journals Interactions between the Escherichia coli cAMP receptor protein and the C-terminal domain of the α subunit of RNA polymerase at Class I promoters

1999 ◽  
Vol 337 (3) ◽  
pp. 415-423 ◽  
Author(s):  
Emma C. LAW ◽  
Nigel J. SAVERY ◽  
Stephen J. W. BUSBY
Keyword(s):  
Escherichia Coli ◽  
Rna Polymerase ◽  
Transcription Initiation ◽  
Class I ◽  
Receptor Protein ◽  
Camp Receptor Protein ◽  
Α Subunit ◽  
Terminal Domain ◽  
Up Elements ◽  
Camp Receptor

The Escherichia coli cAMP receptor protein (CRP) is a factor that activates transcription at over 100 target promoters. At Class I CRP-dependent promoters, CRP binds immediately upstream of RNA polymerase and activates transcription by making direct contacts with the C-terminal domain of the RNA polymerase α subunit (αCTD). Since αCTD is also known to interact with DNA sequence elements (known as UP elements), we have constructed a series of semi-synthetic Class I CRP-dependent promoters, carrying both a consensus DNA-binding site for CRP and a UP element at different positions. We previously showed that, at these promoters, the CRP–αCTD interaction and the CRP–UP element interaction contribute independently and additively to transcription initiation. In this study, we show that the two halves of the UP element can function independently, and that, in the presence of the UP element, the best location for the DNA site for CRP is position -69.5. This suggests that, at Class I CRP-dependent promoters where the DNA site for CRP is located at position -61.5, the two αCTDs of RNA polymerase are not optimally positioned. Two experiments to test this hypothesis are presented.

scholarly journals Thermodynamics of Cyclic Nucleotide Binding to the cAMP Receptor Protein and Its T127L Mutant

1995 ◽  
Vol 270 (37) ◽  
pp. 21679-21683 ◽  
Author(s):  
Inna Gorshkova ◽  
Julie L. Moore ◽  
Keith H. McKenney ◽  
Frederick P. Schwarz
Keyword(s):  
Cyclic Nucleotide ◽  
Nucleotide Binding ◽  
Receptor Protein ◽  
Camp Receptor Protein ◽  
Cyclic Nucleotide Binding ◽  
Camp Receptor

scholarly journals The cyclic AMP (cAMP)-cAMP receptor protein complex functions both as an activator and as a corepressor at the tsx-p2 promoter of Escherichia coli K-12.

1991 ◽  
Vol 173 (17) ◽  
pp. 5419-5430 ◽  
Author(s):  
P Gerlach ◽  
L Søgaard-Andersen ◽  
H Pedersen ◽  
J Martinussen ◽  
P Valentin-Hansen ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Cyclic Amp ◽  
Protein Complex ◽  
Receptor Protein ◽  
Camp Receptor Protein ◽  
Complex Functions ◽  
P2 Promoter ◽  
Camp Receptor ◽  
K 12

scholarly journals Structural Energy Landscapes and Plasticity of the Microstates of Apo Escherichia coli cAMP Receptor Protein

Biochemistry ◽  
2019 ◽  
Vol 59 (4) ◽  
pp. 460-470 ◽  
Author(s):  
Rati Chkheidze ◽  
Wilfredo Evangelista ◽  
Mark A. White ◽  
Y. Whitney Yin ◽  
J. Ching Lee
Keyword(s):  
Escherichia Coli ◽  
Receptor Protein ◽  
Energy Landscapes ◽  
Camp Receptor Protein ◽  
Camp Receptor

Determination of the rates of synthesis and degradation of adenosine 3′,5′-cyclic monophosphate in Escherichia coli CRP− and CRP+ strains

1978 ◽  
Vol 56 (9) ◽  
pp. 849-852 ◽  
Author(s):  
Ann D. E. Fraser ◽  
Hiroshi Yamazaki
Keyword(s):  
Escherichia Coli ◽  
Receptor Protein ◽  
Camp Receptor Protein ◽  
Balanced Growth ◽  
E Coli ◽  
Cyclic Monophosphate ◽  
Camp Receptor ◽  
Extracellular Camp ◽  
Synthesis And Degradation

We have developed a method for estimating the rates of synthesis and degradation of adenosine 3′,5′-cyclic monophosphate (cAMP) in Escherichia coli during balanced growth. Applying this method, we have found that an E. coli CRP− mutant 5333 (deficient for cAMP receptor protein) synthesizes cAMP about 25 times faster than does its CRP+ parent 1100. This accounts for the abnormally high intracellular and extracellular cAMP accumulation in 5333.

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