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NMR processing:
MDD
NMR assignment:
Backbone:
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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


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Default NMR studies on the structure/function correlations of T-cell-epitope analogs from per

NMR studies on the structure/function correlations of T-cell-epitope analogs from pertussis toxin.

Related Articles NMR studies on the structure/function correlations of T-cell-epitope analogs from pertussis toxin.

Eur J Biochem. 1998 Jun 1;254(2):313-7

Authors: Scarselli M, Esposito G, De Magistris MT, Domenighini M, Rappuoli R, Burroni G, Bernini A, Niccolai N

A synthetic tridecapeptide, corresponding to the 30-42 fragment of the S1 subunit of pertussis toxin, has been structurally characterised by using NMR spectroscopy. The molecule corresponds to a T-cell epitope of the bacterial toxin which has been extensively analysed with the alanine scanning approach to check the relevance of each residue for the biological activity of the peptide. Five of these Ala-substituted analogs have also been spectroscopically studied. In the experimental conditions used, different extents of helicity were found for the six peptides in a way which cannot be related to their capabilities of of binding to major histocompatibility complex (MHC) class II and inducing T-cell proliferation. Backbone flexibility around helical transient conformations seems to constitute the structural intermediate step between the structure of the corresponding sequence within the parental protein and in the MHC class II complex. A model of the latter complex, which accounts for the different biological activities of the analogs, is proposed.

PMID: 9660185 [PubMed - indexed for MEDLINE]



Source: PubMed
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