NMR paper Two-dimensional 1H-NMR studies of horseradish peroxidase C and its interaction with i

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[NMR paper] Two-dimensional 1H-NMR studies of horseradish peroxidase C and its interaction with i

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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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08-21-2010, 10:48 PM

nmrlearner

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Two-dimensional 1H-NMR studies of horseradish peroxidase C and its interaction with i

Two-dimensional 1H-NMR studies of horseradish peroxidase C and its interaction with indole-3-propionic acid.

Related Articles Two-dimensional 1H-NMR studies of horseradish peroxidase C and its interaction with indole-3-propionic acid.

Eur J Biochem. 1990 Apr 30;189(2):351-62

Authors: Veitch NC, Williams RJ

The binding of aromatic donor molecules to plant peroxidases has been investigated by examining the complex formed between horseradish peroxidase isoenzyme C and indole-3-propionic acid using two-dimensional 1H-NMR spectroscopy. Despite the relatively high molecular mass and paramagnetism of the protein, this technique can be successfully applied to provide new information on the structure of the complex. A number of relatively well-resolved resonances in certain regions of the one-dimensional spectrum are assigned to amino acid type on the basis of the two-dimensional experiments. Two phenylalanine side chains are found to interact at positions close to the haem group as shown by nuclear Overhauser effect spectroscopy (NOESY). Furthermore, the NOESY spectrum of the complex reveals distinct interactions between these phenylalanine residues and the indole ring of the donor molecule. The binding site is found to comprise of these phenylalanine side chains and also the methyl group of a leucine or valine residue. On the basis of the model structure of horseradish peroxidase isoenzyme C proposed by Welinder and Nørskov-Lauritsen and information from previous studies of the related turnip peroxidases, possible locations for this binding site are discussed. The NMR methods adopted here may be generally applicable to the study of peroxidase--aromatic-donor interactions.

PMID: 2338080 [PubMed - indexed for MEDLINE]

Source: PubMed

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