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Publikováno v:
Journal of the American Chemical Society. 134:2520-2523
The reaction of a class I ribonucleotide reductase (RNR) begins when a cofactor in the β subunit oxidizes a cysteine residue ~35 Å away in the α subunit, generating a thiyl radical. In the class Ic enzyme from Chlamydia trachomatis (Ct), the cyste
Publikováno v:
Journal of the American Chemical Society. 131(9)
We previously used a combination of CW and pulsed-ENDOR protocols to identify the types of protonated oxygen (OHx) species and their disposition within the FeIII/FeIV cluster of Intermediate X, the direct precursor of the essential diferric-tyrosyl r
Publikováno v:
Journal of the American Chemical Society. 124(11)
Despite the current availability of several crystal structures of purple acid phosphatases, to date there is no direct evidence for solvent-derived ligands occupying terminal positions in the active enzyme. This is of central importance, because cata