BioNMR
NMR aggregator & online community since 2003
BioNMR    
Learn or help to learn NMR - get free NMR books!
 

Go Back   BioNMR > Educational resources > Journal club
Advanced Search



Jobs Groups Conferences Literature Pulse sequences Software forums Programs Sample preps Web resources BioNMR issues


Webservers
NMR processing:
MDD
NMR assignment:
Backbone:
Autoassign
MARS
UNIO Match
PINE
Side-chains:
UNIO ATNOS-Ascan
NOEs:
UNIO ATNOS-Candid
UNIO Candid
ASDP
Structure from NMR restraints:
Ab initio:
GeNMR
Cyana
XPLOR-NIH
ASDP
UNIO ATNOS-Candid
UNIO Candid
Fragment-based:
BMRB CS-Rosetta
Rosetta-NMR (Robetta)
Template-based:
GeNMR
I-TASSER
Refinement:
Amber
Structure from chemical shifts:
Fragment-based:
WeNMR CS-Rosetta
BMRB CS-Rosetta
Homology-based:
CS23D
Simshift
Torsion angles from chemical shifts:
Preditor
TALOS
Promega- Proline
Secondary structure from chemical shifts:
CSI (via RCI server)
TALOS
MICS caps, β-turns
d2D
PECAN
Flexibility from chemical shifts:
RCI
Interactions from chemical shifts:
HADDOCK
Chemical shifts re-referencing:
Shiftcor
UNIO Shiftinspector
LACS
CheckShift
RefDB
NMR model quality:
NOEs, other restraints:
PROSESS
PSVS
RPF scores
iCing
Chemical shifts:
PROSESS
CheShift2
Vasco
iCing
RDCs:
DC
Anisofit
Pseudocontact shifts:
Anisofit
Protein geomtery:
Resolution-by-Proxy
PROSESS
What-If
iCing
PSVS
MolProbity
SAVES2 or SAVES4
Vadar
Prosa
ProQ
MetaMQAPII
PSQS
Eval123D
STAN
Ramachandran Plot
Rampage
ERRAT
Verify_3D
Harmony
Quality Control Check
NMR spectrum prediction:
FANDAS
MestReS
V-NMR
Flexibility from structure:
Backbone S2
Methyl S2
B-factor
Molecular dynamics:
Gromacs
Amber
Antechamber
Chemical shifts prediction:
From structure:
Shiftx2
Sparta+
Camshift
CH3shift- Methyl
ArShift- Aromatic
ShiftS
Proshift
PPM
CheShift-2- Cα
From sequence:
Shifty
Camcoil
Poulsen_rc_CS
Disordered proteins:
MAXOCC
Format conversion & validation:
CCPN
From NMR-STAR 3.1
Validate NMR-STAR 3.1
NMR sample preparation:
Protein disorder:
DisMeta
Protein solubility:
camLILA
ccSOL
Camfold
camGroEL
Zyggregator
Isotope labeling:
UPLABEL
Solid-state NMR:
sedNMR


Reply
Thread Tools Search this Thread Rate Thread Display Modes
  #1  
Unread 08-21-2010, 11:53 PM
nmrlearner's Avatar
Senior Member
 
Join Date: Jan 2005
Posts: 23,654
Points: 193,617, Level: 100
Points: 193,617, Level: 100 Points: 193,617, Level: 100 Points: 193,617, Level: 100
Level up: 0%, 0 Points needed
Level up: 0% Level up: 0% Level up: 0%
Activity: 50.7%
Activity: 50.7% Activity: 50.7% Activity: 50.7%
Last Achievements
Award-Showcase
NMR Credits: 0
NMR Points: 193,617
Downloads: 0
Uploads: 0
Default Activation of the phosphosignaling protein CheY. II. Analysis of activated mutants by

Activation of the phosphosignaling protein CheY. II. Analysis of activated mutants by 19F NMR and protein engineering.

Related Articles Activation of the phosphosignaling protein CheY. II. Analysis of activated mutants by 19F NMR and protein engineering.

J Biol Chem. 1993 Jun 25;268(18):13089-96

Authors: Bourret RB, Drake SK, Chervitz SA, Simon MI, Falke JJ

The Escherichia coli CheY protein is activated by phosphorylation, and in turn alters flagellar rotation. To investigate the molecular mechanism of activation, an extensive collection of mutant CheY proteins was analyzed by behavioral assays, in vitro phosphorylation, and 19F NMR chemical shift measurements. Substitution of a positively charged residue (Arg or Lys) in place of Asp13 in the CheY activation site results in activation, even for mutants which cannot be phosphorylated. Thus phosphorylation plays an indirect role in the activation mechanism. Lys109, a residue proposed to act as a conformational "switch" in the activation site, is required for activation of CheY by either phosphorylation or mutation. The 19F NMR chemical shift assay described in the preceding article (Drake, S. K., Bourret, R. B., Luck, L. A., Simon, M. I., and Falke, J. J. (1993) J. Biol Chem. 268, 13081-13088) was again used to monitor six phenylalanine positions in CheY, including one position which probed the vicinity of Lys109. Mutations which activate CheY were observed to perturb the Lys109 probe, providing further evidence that Lys109 is directly involved in the activating conformational change. Two striking contrasts were observed between activation by mutation and phosphorylation. (i) Each activating mutation generates a relatively localized perturbation in the activation site region, whereas phosphorylation triggers a global structural change. (ii) The perturbation of the Lys109 region observed for activating mutations is not detected in the phosphorylated protein. These results are consistent with a two-step model of activated CheY docking to the flagellar switch.

PMID: 8514750 [PubMed - indexed for MEDLINE]



Source: PubMed
Reply With Quote


Did you find this post helpful? Yes | No

Reply
Similar Threads
Thread Thread Starter Forum Replies Last Post
Metabolic relationship between polyhydroxyalkanoic acid and rhamnolipid synthesis in Pseudomonas aeruginosa: comparative 像C NMR analysis of the products in wild-type and mutants.
Metabolic relationship between polyhydroxyalkanoic acid and rhamnolipid synthesis in Pseudomonas aeruginosa: comparative 像C NMR analysis of the products in wild-type and mutants. Metabolic relationship between polyhydroxyalkanoic acid and rhamnolipid synthesis in Pseudomonas aeruginosa: comparative 像C NMR analysis of the products in wild-type and mutants. J Biotechnol. 2011 Jan 10;151(1):30-42 Authors: Choi MH, Xu J, Gutierrez M, Yoo T, Cho YH, Yoon SC Polyhydroxyalkanoic acids (PHAs) and rhamnolipids considered as biotechnologically important...
nmrlearner Journal club 0 04-28-2011 03:12 PM
[NMR paper] NMR backbone assignment of the mitogen-activated protein (MAP) kinase p38.
NMR backbone assignment of the mitogen-activated protein (MAP) kinase p38. Related Articles NMR backbone assignment of the mitogen-activated protein (MAP) kinase p38. J Biomol NMR. 2005 Jun;32(2):175 Authors: Vogtherr M, Saxena K, Grimme S, Betz M, Schieborr U, Pescatore B, Langer T, Schwalbe H
nmrlearner Journal club 0 11-25-2010 08:21 PM
[NMR paper] NMR and SAXS characterization of the denatured state of the chemotactic protein CheY:
NMR and SAXS characterization of the denatured state of the chemotactic protein CheY: implications for protein folding initiation. Related Articles NMR and SAXS characterization of the denatured state of the chemotactic protein CheY: implications for protein folding initiation. Protein Sci. 2001 Jun;10(6):1100-12 Authors: Garcia P, Serrano L, Durand D, Rico M, Bruix M The denatured state of a double mutant of the chemotactic protein CheY (F14N/V83T) has been analyzed in the presence of 5 M urea, using small angle X-ray scattering (SAXS) and...
nmrlearner Journal club 0 11-19-2010 08:32 PM
[NMR paper] NMR structure of activated CheY.
NMR structure of activated CheY. Related Articles NMR structure of activated CheY. J Mol Biol. 2000 Mar 31;297(3):543-51 Authors: Cho HS, Lee SY, Yan D, Pan X, Parkinson JS, Kustu S, Wemmer DE, Pelton JG The CheY protein is the response regulator in bacterial chemotaxis. Phosphorylation of a conserved aspartyl residue induces structural changes that convert the protein from an inactive to an active state. The short half-life of the aspartyl-phosphate has precluded detailed structural analysis of the active protein. Persistent activation of...
nmrlearner Journal club 0 11-18-2010 09:15 PM
[NMR paper] NMR analysis of CYP1(HAP1) DNA binding domain-CYC1 upstream activation sequence inter
NMR analysis of CYP1(HAP1) DNA binding domain-CYC1 upstream activation sequence interactions: recognition of a CGG trinucleotide and of an additional thymine 5 bp downstream by the zinc cluster and the N-terminal extremity of the protein. http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--highwire.stanford.edu-icons-externalservices-pubmed-custom-oxfordjournals_final_free.gif http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--www.pubmedcentral.nih.gov-corehtml-pmc-pmcgifs-pubmed-pmc.gif Related Articles NMR analysis of CYP1(HAP1) DNA binding domain-CYC1 upstream...
nmrlearner Journal club 0 08-22-2010 05:08 PM
[NMR paper] NMR analysis of the trans-activation response (TAR) RNA element of equine infectious
NMR analysis of the trans-activation response (TAR) RNA element of equine infectious anemia virus. http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--www.pubmedcentral.nih.gov-corehtml-pmc-pmcgifs-pubmed-pmc.gif Related Articles NMR analysis of the trans-activation response (TAR) RNA element of equine infectious anemia virus. Nucleic Acids Res. 1995 Oct 25;23(20):4058-65 Authors: Hoffman DW, White SW Transcription of lentiviral DNA in the host cell is regulated by an interaction between the viral TAR RNA stem-loop and the viral Tat...
nmrlearner Journal club 0 08-22-2010 03:50 AM
[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...
nmrlearner Journal club 0 08-21-2010 11:53 PM
[NMR paper] Analysis of conventional and in vitro generated mutants of nmr, the negatively acting
Analysis of conventional and in vitro generated mutants of nmr, the negatively acting nitrogen regulatory gene of Neurospora crassa. Related Articles Analysis of conventional and in vitro generated mutants of nmr, the negatively acting nitrogen regulatory gene of Neurospora crassa. Mol Gen Genet. 1990 Jul;222(2-3):233-40 Authors: Jarai G, Marzluf GA The nmr gene is the major negative regulatory gene in the nitrogen control circuit of Neurospora crassa, which, together with positive regulatory genes, governs the expression of multiple unlinked...
nmrlearner Journal club 0 08-21-2010 10:48 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



BioNMR advertisements to pay for website hosting and domain registration. Nobody does it for us.



Powered by vBulletin® Version 3.7.3
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright, BioNMR.com, 2003-2013
Search Engine Friendly URLs by vBSEO 3.6.0

All times are GMT. The time now is 07:38 PM.


Map