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J Phys Chem B. 2009 Oct 8;113(40):13131-3. doi: 10.1021/jp906983v.

Protein tertiary structural changes visualized by time-resolved X-ray solution scattering.

Abstract

We obtained a solution structural model of myoglobin (Mb) formed upon the CO photolysis of MbCO by analyzing time-resolved X-ray solution scattering data. An experiment-restrained rigid-body molecular dynamics simulation was used to find the best model whose theoretical difference scattering curve gives a satisfactory agreement with the experimental data at the time delay of 10 ns. The obtained solution model shows structural changes similar to crystallographic models for MbCO --> Mb but also displays a noticeable difference in that the N-terminus and F helix show larger structural changes.

PMID:
19757799
DOI:
10.1021/jp906983v
[PubMed - indexed for MEDLINE]
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