NMR paper Photo-CIDNP NMR methods for studying protein folding.

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[NMR paper] Photo-CIDNP NMR methods for studying protein folding.

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NMR processing:

MDD

NMR assignment:

Backbone:

Side-chains:

NOEs:

Structure from NMR restraints:

Ab initio:

Fragment-based:

Rosetta-NMR (Robetta)

Template-based:

GeNMR

I-TASSER

Refinement:

Amber

Structure from chemical shifts:

Fragment-based:

Homology-based:

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:

NMR model quality:

NOEs, other restraints:

Chemical shifts:

RDCs:

Pseudocontact shifts:

Protein geomtery:

SAVES2 or SAVES4

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:

Isotope labeling:

Solid-state NMR:

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11-24-2010, 10:01 PM

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Photo-CIDNP NMR methods for studying protein folding.

Photo-CIDNP NMR methods for studying protein folding.

Related Articles Photo-CIDNP NMR methods for studying protein folding.

Methods. 2004 Sep;34(1):75-87

Authors: Mok KH, Hore PJ

Chemically induced dynamic nuclear polarization (CIDNP) is a nuclear magnetic resonance phenomenon that can be used to probe the solvent-accessibility of tryptophan, tyrosine, and histidine residues in proteins by means of laser-induced photochemical reactions, resulting in significant enhancement of NMR signals. CIDNP offers good sensitivity as a surface probe of protein structure and is particularly powerful in time-resolved NMR measurements. Real-time, rapid-injection protein refolding experiments permit the observation of changes in the accessibility of specific residues during the folding process. CIDNP pulse-labeling gives information on the accessibility of residues in partially structured proteins (e.g., molten globule states) whose NMR spectra are broad and poorly resolved. Heteronuclear two-dimensional (15)N-(1)H CIDNP techniques allow identification of surface-accessible residues with improved resolution and sensitivity. These methods offer residue-specific structural and kinetic information on transient folding intermediates and other partially folded states of proteins that are not readily available from more routine NMR techniques.

PMID: 15283917 [PubMed - indexed for MEDLINE]

Source: PubMed

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