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 09-19-2013, 02:19 PM
nmrlearner's Avatar
Senior Member
 
Join Date: Jan 2005
Posts: 19,778
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 Probing the Residual Structure in Avian Prion Hexarepeats by CD, NMR and MD Techniques.

Probing the Residual Structure in Avian Prion Hexarepeats by CD, NMR and MD Techniques.

Probing the Residual Structure in Avian Prion Hexarepeats by CD, NMR and MD Techniques.

Molecules. 2013;18(9):11467-84

Authors: Russo L, Raiola L, Campitiello MA, Magrý A, Fattorusso R, Malgieri G, Pappalardo G, La Mendola D, Isernia C

Abstract
Many proteins perform essential biological functions by means of regions that lacking specific organized structure exist as an ensemble of interconverting transient conformers. The characterization of such regions, including the description of their structural propensities, number of conformations and relative populations can provide useful insights. Prion diseases result from the conversion of a normal glycoprotein into a misfolded pathogenic isoform. The structures of mammal and chicken prion proteins show a similar fold with a globular domain and a flexible N-terminal portion that contains different repeated regions: octarepeats (PHGGGWGQ) in mammals and hexarepeats (PHNPGY) in chickens. The higher number of prolines in the hexarepeat region suggests that this region may retain a significant amount of residual secondary structure. Here, we report the CD, NMR and MD characterization of a peptide (2-HexaPY) composed of two hexarepeats. We combine experimental NMR data and MD to investigate at atomic level its ensemble-averaged structural properties, demonstrating how each residue of both repeats has a different quantified PPII propensity that shows a periodicity along the sequence. This feature explains the absence of cooperativity to stabilize a PPII conformation. Nonetheless, such residual structure can play a role in nucleating local structural transitions as well as modulating intra-molecular or inter-molecular interactions.


PMID: 24043142 [PubMed - in process]



More...
Reply With Quote


Did you find this post helpful? Yes | No

Reply
Similar Threads
Thread Thread Starter Forum Replies Last Post
[NMR paper] Probing early misfolding events in prion protein mutants by NMR spectroscopy.
Probing early misfolding events in prion protein mutants by NMR spectroscopy. Related Articles Probing early misfolding events in prion protein mutants by NMR spectroscopy. Molecules. 2013;18(8):9451-76 Authors: Giachin G, Biljan I, Ilc G, Plavec J, Legname G Abstract The post-translational conversion of the ubiquitously expressed cellular form of the prion protein, PrPC, into its misfolded and pathogenic isoform, known as prion or PrPSc, plays a key role in prion diseases. These maladies are denoted transmissible spongiform...
nmrlearner Journal club 0 08-24-2013 04:53 PM
Toward the Molecular Basis of Inherited Prion Diseases: NMR Structure of the Human Prion Protein with V210I Mutation.
Toward the Molecular Basis of Inherited Prion Diseases: NMR Structure of the Human Prion Protein with V210I Mutation. Toward the Molecular Basis of Inherited Prion Diseases: NMR Structure of the Human Prion Protein with V210I Mutation. J Mol Biol. 2011 Aug 4; Authors: Biljan I, Ilc G, Giachin G, Raspadori A, Zhukov I, Plavec J, Legname G The development of transmissible spongiform encephalopathies (TSEs) is associated with the conversion of the cellular prion protein (PrP(C)) into a misfolded, pathogenic isoform (PrP(Sc)). Spontaneous generation...
nmrlearner Journal club 0 08-16-2011 01:19 PM
[NMR paper] Probing copper2+ binding to the prion protein using diamagnetic nickel2+ and 1H NMR:
Probing copper2+ binding to the prion protein using diamagnetic nickel2+ and 1H NMR: the unstructured N terminus facilitates the coordination of six copper2+ ions at physiological concentrations. Related Articles Probing copper2+ binding to the prion protein using diamagnetic nickel2+ and 1H NMR: the unstructured N terminus facilitates the coordination of six copper2+ ions at physiological concentrations. J Mol Biol. 2005 Mar 11;346(5):1393-407 Authors: Jones CE, Klewpatinond M, Abdelraheim SR, Brown DR, Viles JH The prion protein (PrP) is a...
nmrlearner Journal club 0 11-24-2010 11:14 PM
[NMR paper] Residual dipolar couplings in NMR structure analysis.
Residual dipolar couplings in NMR structure analysis. Related Articles Residual dipolar couplings in NMR structure analysis. Annu Rev Biophys Biomol Struct. 2004;33:387-413 Authors: Lipsitz RS, Tjandra N Residual dipolar couplings (RDCs) have recently emerged as a new tool in nuclear magnetic resonance (NMR) with which to study macromolecular structure and function in a solution environment. RDCs are complementary to the more conventional use of NOEs to provide structural information. While NOEs are local-distance restraints, RDCs provide...
nmrlearner Journal club 0 11-24-2010 09:25 PM
[NMR paper] Probing residual interactions in unfolded protein states using NMR spin relaxation te
Probing residual interactions in unfolded protein states using NMR spin relaxation techniques: an application to delta131delta. Related Articles Probing residual interactions in unfolded protein states using NMR spin relaxation techniques: an application to delta131delta. J Am Chem Soc. 2003 Oct 1;125(39):11988-92 Authors: Choy WY, Kay LE Residual interactions in delta131delta, a large disordered fragment of staphylococcal nuclease, have been probed at two different pHs using backbone (15)N and side-chain methyl (2)H NMR spin relaxation...
nmrlearner Journal club 0 11-24-2010 09:16 PM
[NMR paper] NMR structure of the bovine prion protein.
NMR structure of the bovine prion protein. NMR structure of the bovine prion protein. Proc Natl Acad Sci U S A. 2000 Jul 18;97(15):8334-9 Authors: Lˇpez Garcia F, Zahn R, Riek R, WŘthrich K The NMR structures of the recombinant 217-residue polypeptide chain of the mature bovine prion protein, bPrP(23-230), and a C-terminal fragment, bPrP(121-230), include a globular domain extending from residue 125 to residue 227, a short flexible chain end of residues 228-230, and an N-terminal flexibly disordered "tail" comprising 108 residues for the...
nmrlearner Journal club 0 11-19-2010 08:29 PM
[NMR paper] Prion protein NMR structure and species barrier for prion diseases.
Prion protein NMR structure and species barrier for prion diseases. http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--highwire.stanford.edu-icons-externalservices-pubmed-custom-pnas_full_free.gif http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--www.pubmedcentral.nih.gov-corehtml-pmc-pmcgifs-pubmed-pmc.gif Related Articles Prion protein NMR structure and species barrier for prion diseases. Proc Natl Acad Sci U S A. 1997 Jul 8;94(14):7281-5 Authors: Billeter M, Riek R, Wider G, Hornemann S, Glockshuber R, W├╝thrich K The structural...
nmrlearner Journal club 0 08-22-2010 05:08 PM
A device for the measurement of residual chemical shift anisotropy and residual dipol
Abstract Residual dipolar coupling (RDC) and residual chemical shift anisotropy (RCSA) report on orientational properties of a dipolar bond vector and a chemical shift anisotropy principal axis system, respectively. They can be highly complementary in the analysis of backbone structure and dynamics in proteins as RCSAs generally include a report on vectors out of a peptide plane while RDCs usually report on in-plane vectors. Both RDC and RCSA average to zero in isotropic solutions and require partial orientation in a magnetic field to become observable. While the alignment and measurement of...
nmrlearner Journal club 0 08-14-2010 04:19 AM


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 - 2020, 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 06:31 PM.


Map