NMR paper Detergent delipidation and solubilization strategies for high-resolution NMR of the m

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[NMR paper] Detergent delipidation and solubilization strategies for high-resolution NMR of the m

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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

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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

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RCI

Interactions from chemical shifts:

HADDOCK

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NOEs, other restraints:

Chemical shifts:

RDCs:

Pseudocontact shifts:

Protein geomtery:

SAVES2 or SAVES4

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FANDAS

MestReS

V-NMR

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Backbone S2

Methyl S2

B-factor

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Shiftx2

Sparta+

Camshift

CH3shift- Methyl

ArShift- Aromatic

ShiftS

Proshift

PPM

CheShift-2- Cα

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Shifty

Camcoil

Poulsen_rc_CS

Disordered proteins:

MAXOCC

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DisMeta

Protein solubility:

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08-21-2010, 11:16 PM

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Detergent delipidation and solubilization strategies for high-resolution NMR of the m

Detergent delipidation and solubilization strategies for high-resolution NMR of the membrane protein bacteriorhodopsin.

Related Articles Detergent delipidation and solubilization strategies for high-resolution NMR of the membrane protein bacteriorhodopsin.

J Biol Chem. 1991 Jun 5;266(16):10066-9

Authors: Seigneuret M, Neumann JM, Rigaud JL

High-resolution NMR studies of bacteriorhodopsin require the availability of the detergent-solubilized protein with both high concentration and small rotational correlation time. A procedure is described for the optimized preparation of such samples. Bacteriorhodopsin was first delipidated by detergent treatment of purple membrane under nonsolubilizing conditions for the protein. The delipidated aggregated protein could then be solubilized into monomers at concentration close to millimolar by selected detergents. The solubilizing detergent had an important effect on the rotational correlation time of the protein as shown by measuring in each case the temperature-dependent stability of the protein, the size of the detergent-protein complex, and the detergent viscosity. Consistently, a strong influence of the detergent was also found on spectral resolution in 13C NMR spectra of solubilized bacteriorhodopsin labeled with [1-13C]phenylalanine. Best resolution was obtained using n-dodecylmaltoside as detergent, with which relatively narrow well resolved 13C NMR resonances were observed at 50 degrees C. It is suggested that high-resolution NMR studies performed with this detergent may contribute to the structural resolution of bacteriorhodopsin.

PMID: 2037565 [PubMed - indexed for MEDLINE]

Source: PubMed

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