Extensive de novo solid-state NMR assignments of the 33*kDa C-terminal domain of the Ure2 prion.

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*Extensive de novo solid-state NMR assignments of the 33kDa C-terminal domain of the Ure2 prion.**

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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:

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RDCs:

Pseudocontact shifts:

Protein geomtery:

SAVES2 or SAVES4

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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

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Protein disorder:

DisMeta

Protein solubility:

Isotope labeling:

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08-02-2011, 11:40 AM

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Extensive de novo solid-state NMR assignments of the 33*kDa C-terminal domain of the Ure2 prion.

Extensive de novo solid-state NMR assignments of the 33*kDa C-terminal domain of the Ure2 prion.

Extensive de novo solid-state NMR assignments of the 33*kDa C-terminal domain of the Ure2 prion.

J Biomol NMR. 2011 Jul 31;

Authors: Habenstein B, Wasmer C, Bousset L, Sourigues Y, Schütz A, Loquet A, Meier BH, Melki R, Böckmann A

We present the de novo resonance assignments for the crystalline 33*kDa C-terminal domain of the Ure2 prion using an optimized set of five 3D solid-state NMR spectra. We obtained, using a single uniformly (13)C, (15)N labeled protein sample, sequential chemical-shift information for 74% of the N, C?, C? triples, and for 80% of further side-chain resonances for these spin systems. We describe the procedures and protocols devised, and discuss possibilities and limitations of the assignment of this largest protein assigned today by solid-state NMR, and for which no solution-state NMR shifts were available. A comparison of the NMR chemical shifts with crystallographic data reveals that regions with high crystallographic B-factors are particularly difficult to assign. While the secondary structure elements derived from the chemical shift data correspond mainly to those present in the X-ray crystal structure, we detect an additional helical element and structural variability in the protein crystal, most probably originating from the different molecules in the asymmetric unit, with the observation of doubled resonances in several parts, including entire stretches, of the protein. Our results provide the point of departure towards an atomic-resolution structural analysis of the C-terminal Ure2p domain in the context of the full-length prion fibrils.

PMID: 21805376 [PubMed - as supplied by publisher]

Source: PubMed

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