Pinpoint analysis of a protein in slow exchange using F 1 F 2 -selective ZZ-exchange spectroscopy: assignment and kinetic analysis

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Pinpoint analysis of a protein in slow exchange using F 1 F 2 -selective ZZ-exchange spectroscopy: assignment and kinetic analysis

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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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04-01-2020, 12:01 AM

nmrlearner

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Pinpoint analysis of a protein in slow exchange using F 1 F 2 -selective ZZ-exchange spectroscopy: assignment and kinetic analysis

Pinpoint analysis of a protein in slow exchange using F 1 F 2 -selective ZZ-exchange spectroscopy: assignment and kinetic analysis

Abstract

ZZ-exchange spectroscopy is widely used to study slow exchange processes in biomolecules, especially determination of exchange rates and assignment of minor peaks. However, if the exchange cross peaks overlap or the populations are skewed, kinetic analysis is hindered. In order to analyze slow exchange protein dynamics under such conditions, here we have developed a new method by combining ZZ-exchange and F1F2-selective NMR spectroscopy. We demonstrate the utility of this method by examining the monomerâ??dimer transition of the ubiquitin-associated domain of p62, successfully assigning the minor (monomeric) peaks and obtaining the exchange rates, which cannot be achieved by ZZ-exchange alone.

Source: Journal of Biomolecular NMR

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