Skip to main content
. Author manuscript; available in PMC: 2011 Aug 25.
Published in final edited form as: J Am Chem Soc. 2010 Aug 25;132(33):11671–11677. doi: 10.1021/ja104134e

Table 2.

14N hyperfine tensors and p/s ratio.

System Nitrogen a, MHz Anisotropic tensor, MHz p/s Reference
Cu(II)-doped L-histidine hydrochloride remote NdH 1.35 -0.28, -0.09, 0.37 4.47 28
Cu(II)-doped zinc bis(1,2-dimethyl imidazole) dichloride remote N-CH3 1.42a
1.35a 		-0.20, -0.14, 0.33a
-0.19, -0.13, 0.33a 		3.79
3.98		 29
SQ in QA-site PSII imidazole N-H 1.77b
1.37c
1.87d
1.67e 		-0.27, -0.27, 0.53b
-0.27, -0.27, 0.53c
-0.37, -0.37, 0.73d
-0.27, -0.27, 0.53e 		4.88
6.30
6.36
5.17		 30
SQ in QA-site PSII peptide N-H 2.10f
2.10g
2.10h 		-0.10, -0.40, 0.50f
-0.80, -0.80, 1.60g
-0.40, -0.40, 0.80h 		3.87
12.42
6.20		 30
SQ in Qi-site bc1 complex imidazole N-H 0.74 ±(-0.12, -0.12, 0.24) 5.28 31
SQ in QD-site nitrate reductase A imidazole N-H 0.80 (-0.11,-0.11, 0.22) 4.48 32
SQ in QA-site RCi imidazole N-H 2.66
2.44		 -0.31, -0.26, 0.58
-0.25, -0.21, 0.47		 3.55
3.13		 33
SQ in QA-site RCi peptide N-H 1.38
1.09		 -0.29, -0.27; 0.56
-0.27, -0.26; 0.53		 6.61
7.92		 33
a

two conformations are reported;

b

CN-Treated PSII, pH 5.5;

c

same asb but pH 8.2;

d

pH 11-Treated PSII, pH 5.0,

e

same asd but pH 8.2;

f

CN-Treated PSII, pH 7.2, no pH dependence;

g

pH 11-Treated PSII, pH 5.0, gsame as

h

but pH 7.2;

i

calculated tensors; idifferent computation models, see ref. 33 for details.