PMID- 35142420 OWN - NLM STAT- MEDLINE DCOM- 20220407 LR - 20220731 IS - 1439-7641 (Electronic) IS - 1439-4235 (Print) IS - 1439-4235 (Linking) VI - 23 IP - 7 DP - 2022 Apr 5 TI - DFT Calculations for Mossbauer Properties on Dinuclear Center Models of the Resting Oxidized Cytochrome c Oxidase. PG - e202100831 LID - 10.1002/cphc.202100831 [doi] LID - e202100831 AB - Mossbauer isomer shift and quadrupole splitting properties have been calculated using the OLYP-D3(BJ) density functional method on previously obtained (W.-G. Han Du, et al., Inorg Chem. 2020, 59, 8906-8915) geometry optimized Fe(a3)(3+) -H(2) O-Cu(B)(2+) dinuclear center (DNC) clusters of the resting oxidized (O state) "as-isolated" cytochrome c oxidase (CcO). The calculated results are highly consistent with the available experimental observations. The calculations have also shown that the structural heterogeneities of the O state DNCs implicated by the Mossbauer experiments are likely consequences of various factors, particularly the variable positions of the central H(2) O molecule between the Fe(a3)(3+) and Cu(B)(2+) sites in different DNCs, whether or not this central H(2) O molecule has H-bonding interaction with another H(2) O molecule, the different spin states having similar energies for the Fe(a3)(3+) sites, and whether the Fe(a3)(3+) and Cu(B)(2+) sites are ferromagnetically or antiferromagnetically spin-coupled. CI - (c) 2022 The Authors. ChemPhysChem published by Wiley-VCH GmbH. FAU - Han Du, Wen-Ge AU - Han Du WG AUID- ORCID: 0000-0001-5876-1943 AD - Department of Integrative Structural and Computational Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA. FAU - Gotz, Andreas W AU - Gotz AW AUID- ORCID: 0000-0002-8048-6906 AD - San Diego Supercomputer Center, University of California San Diego, 9500 Gilman Drive MC0505, La Jolla, CA 92093, USA. FAU - Noodleman, Louis AU - Noodleman L AUID- ORCID: 0000-0001-8176-4448 AD - Department of Integrative Structural and Computational Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA. LA - eng GR - The Scripps Research Institute/ GR - R01 GM100934/GM/NIGMS NIH HHS/United States GR - TG-CHE130010/San Diego Supercomputer Center/ GR - R01GM100934/GF/NIH HHS/United States GR - SSRL/ GR - ACI-1053575/National Science Foundation/ GR - Scripps Research group/ PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20220301 PL - Germany TA - Chemphyschem JT - Chemphyschem : a European journal of chemical physics and physical chemistry JID - 100954211 RN - EC 1.9.3.1 (Electron Transport Complex IV) SB - IM MH - Density Functional Theory MH - *Electron Transport Complex IV/chemistry/metabolism MH - Oxidation-Reduction PMC - PMC9054037 MID - NIHMS1799927 OTO - NOTNLM OT - Mossbauer OT - cytochrome c oxidase OT - isomer shift OT - quadrupole splitting OT - resting state COIS- The authors declare no conflict of interest. EDAT- 2022/02/11 06:00 MHDA- 2022/04/08 06:00 PMCR- 2022/07/25 CRDT- 2022/02/10 08:39 PHST- 2022/02/03 00:00 [revised] PHST- 2021/11/19 00:00 [received] PHST- 2022/02/11 06:00 [pubmed] PHST- 2022/04/08 06:00 [medline] PHST- 2022/02/10 08:39 [entrez] PHST- 2022/07/25 00:00 [pmc-release] AID - CPHC202100831 [pii] AID - 10.1002/cphc.202100831 [doi] PST - ppublish SO - Chemphyschem. 2022 Apr 5;23(7):e202100831. doi: 10.1002/cphc.202100831. Epub 2022 Mar 1.