Simultaneous Detection of Protein Phosphorylation and Acetylation by High-Resolution

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Simultaneous Detection of Protein Phosphorylation and Acetylation by High-Resolution

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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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10-05-2010, 12:11 PM

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Simultaneous Detection of Protein Phosphorylation and Acetylation by High-Resolution

Simultaneous Detection of Protein Phosphorylation and Acetylation by High-Resolution NMR Spectroscopy.

Simultaneous Detection of Protein Phosphorylation and Acetylation by High-Resolution NMR Spectroscopy.

J Am Chem Soc. 2010 Oct 1;

Authors: Liokatis S, Dose A, Schwarzer D, Selenko P

Post-translational protein modifications (PTMs) such as phosphorylation and acetylation regulate a large number of eukaryotic signaling processes. In most instances, it is the combination of different PTMs that "encode" the biological outcome of these covalent amendments in a highly dynamic and cell-state-specific manner. Most research tools fail to detect different PTMs in a single experiment and are unable to directly observe dynamic PTM states in complex environments such as cell extracts or intact cells. Here we describe in situ observations of phosphorylation and acetylation reactions by high-resolution liquid-state NMR spectroscopy. We delineate the NMR characteristics of progressive lysine acetylation and provide in vitro examples of joint phosphorylation and acetylation events and how they can be deciphered on a residue-specific basis and in a time-resolved and quantitative manner. Finally, we extend our NMR investigations to cellular phosphorylation and acetylation events in human cell extracts and demonstrate the unique ability of NMR spectroscopy to simultaneously report the establishment of these PTMs by endogenous cellular enzymes.

PMID: 20886851 [PubMed - as supplied by publisher]

Source: PubMed

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