NMR paper Defining the p53 DNA-binding domain/Bcl-x(L)-binding interface using NMR.

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[NMR paper] Defining the p53 DNA-binding domain/Bcl-x(L)-binding interface using NMR.

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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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11-24-2010, 09:25 PM

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Defining the p53 DNA-binding domain/Bcl-x(L)-binding interface using NMR.

Defining the p53 DNA-binding domain/Bcl-x(L)-binding interface using NMR.

Related Articles Defining the p53 DNA-binding domain/Bcl-x(L)-binding interface using NMR.

FEBS Lett. 2004 Feb 13;559(1-3):171-4

Authors: Petros AM, Gunasekera A, Xu N, Olejniczak ET, Fesik SW

p53 exerts its tumor suppressor activity through both transcription-dependent and transcription-independent processes. Although the transcription-dependent activity of p53 has been extensively studied, the mechanism for transcription-independent p53-mediated tumor suppression is less well known. Recently, it was reported that p53 can directly induce mitochondrial permeabilization and promote apoptosis. This occurs through complexation of the DNA-binding region of p53 with the anti-apoptotic proteins Bcl-x(L) and Bcl-2 (Mihara, M. et al. (2003) Mol. Cell 11, 577-590). Using nuclear magnetic resonance (NMR) spectroscopy we show that the interaction surface on p53 involves the same region that is used by the protein to contact DNA. The p53-binding site on Bcl-x(L) consists of the carboxy-terminus of the first alpha-helix, the loop between alpha3 and alpha4, and the loop between alpha5 and alpha6 of Bcl-x(L). Furthermore, the interaction of p53 with Bcl-x(L) is blocked by the binding of a 25-residue peptide derived from the BH3 region of the pro-apoptotic protein referred to as Bad.

PMID: 14960327 [PubMed - indexed for MEDLINE]

Source: PubMed

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