Nanodiscs vs. Macrodiscs for NMR of Membrane Proteins.

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Nanodiscs vs. Macrodiscs for NMR of Membrane Proteins.

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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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09-23-2011, 05:30 PM

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Nanodiscs vs. Macrodiscs for NMR of Membrane Proteins.

Nanodiscs vs. Macrodiscs for NMR of Membrane Proteins.

Nanodiscs vs. Macrodiscs for NMR of Membrane Proteins.

Biochemistry. 2011 Sep 21;

Authors: Park SH, Berkamp S, Cook GA, Chan MK, Viadiu H, Opella SJ

Abstract
It is challenging to find membrane mimics that stabilize the native structure, dynamics, and functions of membrane proteins. In a recent advance, nanodiscs have been shown to provide a bilayer environment compatible with solution NMR. Increasing the lipid to "belt" peptide ratio expands their diameter, slows their reorientation rate, and enables the protein-containing discs to be aligned in a magnetic field for Oriented Sample solid-state NMR. Here, we compare the spectroscopic properties of membrane proteins with between one and seven trans-membrane helices in q=0.1 isotropic bicelles, ~10 nm diameter isotropic nanodiscs, ~30 nm diameter magnetically aligned macrodiscs, and q=5 bicelles.

PMID: 21936505 [PubMed - as supplied by publisher]

Source: PubMed

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