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. Author manuscript; available in PMC: 2015 Apr 9.
Published in final edited form as: Chem Rev. 2014 Mar 3;114(7):3659–3853. doi: 10.1021/cr400327t

Table 34.

X-ray Crystallographic Structures of Bovine aa3 CcO of the O2 Reduction Site in Different States.

Distance (Å)
protein PDB
ID
Resolution/Å		 Bridging
Ligand		 Fea3-CuB Fea3-X CuB-Y Ref
Fully oxidized 2ZXW 2.5 O22− 4.87 2.24 2.17 1000
Fully reduced 1OCR 2.35 5.19 1002
Fully oxidized Azide bound 1OCO 2.9 N3− 5.3 1.97 1.9 1002
Fully reduced CO bound 3AG1 2.2 CO 5.35 1.8 2.7 999
Fully reduced CO bound 3AG2 1.8 CO 4.97 3.0 2.4 999
Fully reduced NO bound 3AG3 1.8 NO 4.91 1.8 2.5 999
Fully reduced CN-bound 3AG4 2.05 CN− 4.99 2.4 2.3 999