NMR paper 1H NMR study of the interaction of ATP with Escherichia coli RNA polymerase containin

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[NMR paper] 1H NMR study of the interaction of ATP with Escherichia coli RNA polymerase containin

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NMR assignment:

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Side-chains:

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Structure from NMR restraints:

Ab initio:

Fragment-based:

Rosetta-NMR (Robetta)

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GeNMR

I-TASSER

Refinement:

Amber

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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

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FANDAS

MestReS

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Methyl S2

B-factor

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Sparta+

Camshift

CH3shift- Methyl

ArShift- Aromatic

ShiftS

Proshift

PPM

CheShift-2- Cα

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Shifty

Camcoil

Poulsen_rc_CS

Disordered proteins:

MAXOCC

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08-21-2010, 11:12 PM

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1H NMR study of the interaction of ATP with Escherichia coli RNA polymerase containin

1H NMR study of the interaction of ATP with Escherichia coli RNA polymerase containing in vivo-incorporated Co(II).

Related Articles 1H NMR study of the interaction of ATP with Escherichia coli RNA polymerase containing in vivo-incorporated Co(II).

Arch Biochem Biophys. 1991 Dec;291(2):307-10

Authors: Panth H, Brenner MC, Wu FY

The DNA-dependent RNA polymerase containing two intrinsic cobalt ions (Co2-RPase) instead of the naturally occurring zinc was purified from Escherichia coli cells grown in zinc-depleted, cobalt-enriched media. Longitudinal NMR relaxation rates of the H2 and H8 protons of ATP were measured in the absence and presence of up to 92 microM Co2-RPase. No enhancement of the proton relaxation rates was observed in the presence of cobalt-containing enzyme, suggesting that the ATP substrate does not undergo rapid exchange at a site close to either of the intrinsic cobalt ions. This result is in contrast to that previously observed when Co2+ was incorporated into RPase by an in vitro procedure involving partial urea denaturation of the protein.

PMID: 1952944 [PubMed - indexed for MEDLINE]

Source: PubMed

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