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. 2011 Sep 27;6(9):e25022. doi: 10.1371/journal.pone.0025022

Table 1. The g–tensor, hf–tensors (A, mT), line–width tensor (LW, mT), and the rotational θ angle of the α-carbon (°, deg) for the tyrosyl radical in Class Ia, Class Ib RNRs and the YD radical in photosystem II.

EPR-tensors EBV R2 HSV1 R2 E. coli R2 Mouse R2 S. typhimurium R2 PS II YD
g 1 2.0080 2.0076 2.0090 2.0076 2.0089 2.0076
g 2 2.0043 2.0043 2.0046 2.0043 2.0043 2.0043
g 3 2.0021 2.0022 2.0022 2.0022 2.0021 2.0022
H3,5 Axx −0.80/−0.70* −0.28/−0.43* −0.96 −0.91/−0.73* −1.15 −0.91
H3,5 Ayy −0.50/−0.40* −0.28/−0.18* −0.28 −0.44/−0.48* −0.25 −0.26
H3,5 Azz −0.30/−0.20* −0.47−/0.64* −0.70 −0.66/−0.58* −0.71 −0.70
Hβ1 Axx 2.60 2.28 1.96 2.14 1.05 0.72
Hβ1 Ayy 1.80 2.07 2.12 1.90 0.74 1.05
Hβ1 Azz 1.40 1.78 1.96 2.15 0.95 0.72
Hβ2 Axx 0.40 0.39 0.18 0.95 <0.3 0.19
Hβ2 Ayy 0.30 0.25 −0.07 0.25 <0.3 0.19
Hβ2 Azz 0.30 0.28 −0.07 0.57 <0.3 0.51
LWx 0.38 0.33 - 0.45 0.58 -
LWy 1.0 0.33 - 0.35 0.53 -
LWz 1.1 0.33 - 0.44 0.37 -
θ 30 35 30 35 75 82
Ref. This work# [27], [33] [31], [40], [65] [33] [34] [22], [34]

*Non-equivalent H3 and H5 protons.

#

The proton (H) hfc signs were derived from the DFT analyses. The definition of the torsional angle θ was given in Scheme 1.