NMR paper NMR observation of selected segments in a larger protein: central-segment isotope lab

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[NMR paper] NMR observation of selected segments in a larger protein: central-segment isotope lab

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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:

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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

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NMR sample preparation:

Protein disorder:

DisMeta

Protein solubility:

Isotope labeling:

Solid-state NMR:

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11-18-2010, 08:31 PM

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NMR observation of selected segments in a larger protein: central-segment isotope lab

NMR observation of selected segments in a larger protein: central-segment isotope labeling through intein-mediated ligation.

Related Articles NMR observation of selected segments in a larger protein: central-segment isotope labeling through intein-mediated ligation.

Biochemistry. 1999 Dec 7;38(49):16040-4

Authors: Otomo T, Ito N, Kyogoku Y, Yamazaki T

Peptide segments in a protein, which can include an active site of interest or be a series of parts constituting the entire structure, are now selectively observed by nuclear magnetic resonance (NMR) spectroscopy using samples prepared by the intein-mediated ligation method. Two separate inteins were used to ligate NMR-transparent segments to both the ends of an NMR-visible segment, producing a partly visible intact protein molecule. The (15)N-(1)H correlation spectrum of a 370-residue maltose binding protein labeled with (15)N at a continuous segment comprising residues Gly(101)-Ser(238) showed the essential elimination of signal overlapping, the signals being at the same positions as for the uniformly labeled sample. This method will allow structural analysis by NMR of over 50-kDa proteins in combination with contemporary NMR techniques suppressing the signal decays of larger proteins.

PMID: 10587426 [PubMed - indexed for MEDLINE]

Source: PubMed

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