Related ArticlesMotion of carboxyl terminus of Galpha is restricted upon G protein activation. A solution NMR study using semisynthetic Galpha subunits.
J Biol Chem. 2005 Sep 2;280(35):31019-26
Authors: Anderson LL, Marshall GR, Crocker E, Smith SO, Baranski TJ
The carboxyl terminus of the G protein alpha subunit plays a key role in interactions with G protein-coupled receptors. Previous studies that have incorporated covalently attached probes have demonstrated that the carboxyl terminus undergoes conformational changes upon G protein activation. To examine the conformational changes that occur at the carboxyl terminus of Galpha subunits upon G protein activation in a more native system, we generated a semisynthetic Galpha subunit, site-specifically labeled in its carboxyl terminus with 13C amino acids. Using expressed protein ligation, 9-mer peptides were ligated to recombinant Galpha(i1) subunits lacking the corresponding carboxyl-terminal residues. In a receptor-G protein reconstitution assay, the truncated Galpha(i1) subunit could not be activated by receptor; whereas the semisynthetic protein demonstrated functionality that was comparable with recombinant Galpha(i1). To study the conformation of the carboxyl terminus of the semisynthetic G protein, we applied high resolution solution NMR to Galpha subunits containing 13C labels at the corresponding sites in Galpha(i1): Leu-348 (uniform), Gly-352 (alpha carbon), and Phe-354 (ring). In the GDP-bound state, the spectra of the ligated carboxyl terminus appeared similar to the spectra obtained for 13C-labeled free peptide. Upon titration with increasing concentrations of AlF4-, the 13C resonances demonstrated a marked loss of signal intensity in the semisynthetic Galpha subunit but not in free peptide subjected to the same conditions. Because AlF4- complexes with GDP to stabilize an activated state of the Galpha subunit, these results suggest that the Galpha carboxyl terminus is highly mobile in its GDP-bound state but adopts an ordered conformation upon activation by AlF4-.
[NMR paper] Water molecules in DNA recognition I: hydration lifetimes of trp operator DNA in solu
Water molecules in DNA recognition I: hydration lifetimes of trp operator DNA in solution measured by NMR spectroscopy.
Related Articles Water molecules in DNA recognition I: hydration lifetimes of trp operator DNA in solution measured by NMR spectroscopy.
J Mol Biol. 1998 Oct 2;282(4):847-58
Authors: Sunnerhagen M, Denisov VP, Venu K, Bonvin AM, Carey J, Halle B, Otting G
The present NMR study investigates the residence times of the hydration water molecules associated with uncomplexed trp operator DNA in solution by measuring intermolecular...
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NMR and Small Angle Scattering-based structural analysis of protein complexes in solu
NMR and Small Angle Scattering-based structural analysis of protein complexes in solution.
Related Articles NMR and Small Angle Scattering-based structural analysis of protein complexes in solution.
J Struct Biol. 2010 Nov 10;
Authors: Madl T, Gabel F, Sattler M
Structural analysis of multi-domain protein complexes is a key challenge in current biology and a prerequisite for understanding the molecular basis of essential cellular processes. The use of solution techniques is important for characterizing the quaternary arrangements and dynamics of...
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[NMR paper] 1H NMR studies of mouse ribonucleotide reductase: the R2 protein carboxyl-terminal ta
1H NMR studies of mouse ribonucleotide reductase: the R2 protein carboxyl-terminal tail, essential for subunit interaction, is highly flexible but becomes rigid in the presence of protein R1.
Related Articles 1H NMR studies of mouse ribonucleotide reductase: the R2 protein carboxyl-terminal tail, essential for subunit interaction, is highly flexible but becomes rigid in the presence of protein R1.
Biochemistry. 1994 Mar 15;33(10):2838-42
Authors: Lycksell PO, Ingemarson R, Davis R, Gräslund A, Thelander L
Mouse ribonucleotide reductase...
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[NMR paper] 1H NMR studies of mouse ribonucleotide reductase: the R2 protein carboxyl-terminal ta
1H NMR studies of mouse ribonucleotide reductase: the R2 protein carboxyl-terminal tail, essential for subunit interaction, is highly flexible but becomes rigid in the presence of protein R1.
Related Articles 1H NMR studies of mouse ribonucleotide reductase: the R2 protein carboxyl-terminal tail, essential for subunit interaction, is highly flexible but becomes rigid in the presence of protein R1.
Biochemistry. 1994 Mar 15;33(10):2838-42
Authors: Lycksell PO, Ingemarson R, Davis R, Gräslund A, Thelander L
Mouse ribonucleotide reductase...
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[NMR paper] Activation of the phosphosignaling protein CheY. I. Analysis of the phosphorylated co
Activation of the phosphosignaling protein CheY. I. Analysis of the phosphorylated conformation by 19F NMR and protein engineering.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--www.pubmedcentral.nih.gov-corehtml-pmc-pmcgifs-pubmed-pmc-MS.gif Related Articles Activation of the phosphosignaling protein CheY. I. Analysis of the phosphorylated conformation by 19F NMR and protein engineering.
J Biol Chem. 1993 Jun 25;268(18):13081-8
Authors: Drake SK, Bourret RB, Luck LA, Simon MI, Falke JJ
CheY, the 14-kDa response regulator protein of...
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[NMR paper] Deletion of approximately 10 kDa from the carboxyl terminus of a soluble approximatel
Deletion of approximately 10 kDa from the carboxyl terminus of a soluble approximately 48-kDa insulin receptor protein-tyrosine kinase results in slower rates of diphosphorylation of a series of dodecapeptide substrates. An assessment by 1H NMR.
Related Articles Deletion of approximately 10 kDa from the carboxyl terminus of a soluble approximately 48-kDa insulin receptor protein-tyrosine kinase results in slower rates of diphosphorylation of a series of dodecapeptide substrates. An assessment by 1H NMR.
J Biol Chem. 1991 Jul 5;266(19):12369-71
Authors: ...
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[NMR paper] Deletion of approximately 10 kDa from the carboxyl terminus of a soluble approximatel
Deletion of approximately 10 kDa from the carboxyl terminus of a soluble approximately 48-kDa insulin receptor protein-tyrosine kinase results in slower rates of diphosphorylation of a series of dodecapeptide substrates. An assessment by 1H NMR.
Related Articles Deletion of approximately 10 kDa from the carboxyl terminus of a soluble approximately 48-kDa insulin receptor protein-tyrosine kinase results in slower rates of diphosphorylation of a series of dodecapeptide substrates. An assessment by 1H NMR.
J Biol Chem. 1991 Jul 5;266(19):12369-71
Authors: ...
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[NMR paper] Solution structure of the carboxyl terminus of a human class Mu glutathione S-transfe
Solution structure of the carboxyl terminus of a human class Mu glutathione S-transferase: NMR assignment strategies in large proteins.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--linkinghub.elsevier.com-ihub-images-PubMedLink.gif Related Articles Solution structure of the carboxyl terminus of a human class Mu glutathione S-transferase: NMR assignment strategies in large proteins.
J Mol Biol. 1999 Feb 5;285(5):2119-32
Authors: McCallum SA, Hitchens TK, Rule GS
Strategies to obtain the NMR assignments for the HN, N, CO, Calpha and...
Motion of carboxyl terminus of Galpha is restricted upon G protein activation. A solu
Linear Mode
