NMR paper Demonstration of positionally disordered water within a protein hydrophobic cavity by

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[NMR paper] Demonstration of positionally disordered water within a protein hydrophobic cavity by

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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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08-22-2010, 03:41 AM

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Demonstration of positionally disordered water within a protein hydrophobic cavity by

Demonstration of positionally disordered water within a protein hydrophobic cavity by NMR.

Related Articles Demonstration of positionally disordered water within a protein hydrophobic cavity by NMR.

Science. 1995 Mar 24;267(5205):1813-7

Authors: Ernst JA, Clubb RT, Zhou HX, Gronenborn AM, Clore GM

The presence and location of water of hydration (that is, bound water) in the solution structure of human interleukin-1 beta (hIL-1 beta) was investigated with water-selective two-dimensional heteronuclear magnetic resonance spectroscopy. It is shown here that in addition to water at the surface of the protein and ordered internal water molecules involved in bridging hydrogen bonds, positionally disordered water is present within a large, naturally occurring hydrophobic cavity located at the center of the molecule. These water molecules of hydration have residency times in the range of 1 to 2 nanoseconds to 100 to 200 microseconds and can be readily detected by nuclear magnetic resonance (NMR). Thus, large hydrophobic cavities in proteins may not be truly empty, as analysis of crystal structures appears to show, but may contain mobile water molecules that are crystallographically invisible but detectable by NMR.

PMID: 7892604 [PubMed - indexed for MEDLINE]

Source: PubMed

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