ns-µs time-resolved step-scan FTIR of ba3 oxidoreductase from Thermus thermophilus: Protonic connectivity of w941-w946-w927
Journal
International Journal of Molecular Sciences
Date Issued
October 1, 2016
DOI
10.3390/ijms17101657
Abstract
Time-resolved step-scan FTIR spectroscopy has been employed to probe the dynamics of the ba3 oxidoreductase from Thermus thermophilus in the ns-µs time range and in the pH/pD 6-9 range. The data revealed a pH/pD sensitivity of the D372 residue and of the ring-A propionate of heme a3. Based on the observed transient changes a model in which the protonic connectivity of w941-w946-927 to the D372 and the ring-A propionate of heme a3 is described.
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