NMR paper Structure and dynamics of ferrocytochrome c553 from Desulfovibrio vulgaris studied by

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[NMR paper] Structure and dynamics of ferrocytochrome c553 from Desulfovibrio vulgaris studied by

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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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08-22-2010, 03:41 AM

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Structure and dynamics of ferrocytochrome c553 from Desulfovibrio vulgaris studied by

Structure and dynamics of ferrocytochrome c553 from Desulfovibrio vulgaris studied by NMR spectroscopy and restrained molecular dynamics.

Related Articles Structure and dynamics of ferrocytochrome c553 from Desulfovibrio vulgaris studied by NMR spectroscopy and restrained molecular dynamics.

J Mol Biol. 1995 Feb 3;245(5):661-81

Authors: Blackledge MJ, Medvedeva S, Poncin M, Guerlesquin F, Bruschi M, Marion D

The solution structure of Desulfovibrio vulgaris Hildenborough (DvH) ferrocytochrome c553 has been determined by nuclear magnetic resonance spectroscopy and combined simulated annealing/high temperature restrained molecular dynamics calculations. This three-stage protocol consists of an initial determination of overall fold from randomised co-ordinates, followed by a 20 picosecond exploratory stage, during which the non-bonded terms are simplified to facilitate as broad a sampling of conformational space as possible, and a 26 picosecond refinement stage, using the full AMBER force field. This latter stage systematically improved the energetic and convergence characteristics of the ensemble, while still satisfying the experimental restraints. Forty structures have been obtained from a total of 875 distance constraints for this protein of 79 amino acid residues. The root-mean-square deviation over all residues with respect to the mean is 0.70(+/- 0.12)A for the backbone (N, C alpha and C') atoms. Two conformations of the turn motif at the solvent/heme cleft interface have been identified, both fulfilling the experimental data and having equally viable energetic characteristics. The stability of the ensemble and the dynamic characteristics have been further investigated by subjecting ten of the structures to constraint-free molecular dynamics calculations (130 picoseconds) in vacuo. The structures were found to be stable to within 1.5 A of the initial backbone conformation. Comparison with the dynamic behaviour of the restrained molecular dynamics calculations has been used to identify regions of inherent flexibility in the molecule.

PMID: 7844834 [PubMed - indexed for MEDLINE]

Source: PubMed

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