PMID- 19563766 OWN - NLM STAT- MEDLINE DCOM- 20091102 LR - 20211020 IS - 1096-0309 (Electronic) IS - 0003-2697 (Print) IS - 0003-2697 (Linking) VI - 394 IP - 1 DP - 2009 Nov 1 TI - Identification of heme propionate vibrational modes in the resonance Raman spectra of cytochrome c oxidase. PG - 141-3 LID - 10.1016/j.ab.2009.06.035 [doi] AB - The propionate groups of heme a and a(3) in cytochrome c oxidase (CcO) have been postulated to mediate both the electron and proton transfer within the enzyme. To establish structural markers for the propionate groups, their associated vibrational modes were identified in the resonance Raman spectra of CcO from bovine (bCcO) and Rhodobacter sphaeroides (RsCcO). The distinction between the modes from the propionates of heme a and heme a(3), as well as those from the propionates on the pyrrole rings A and D in each heme, was made on the basis of H2O-D2O isotope substitution experiments combined with wavelength-selective resonance enhancement (for bCcO) or mutagenesis studies (for RsCcO). FAU - Egawa, Tsuyoshi AU - Egawa T AD - Department of Physiology and Biophysics, Albert Einstein College of Medicine, Bronx, NY 10461, USA. FAU - Lee, Hyun Ju AU - Lee HJ FAU - Ji, Hong AU - Ji H FAU - Gennis, Robert B AU - Gennis RB FAU - Yeh, Syun-Ru AU - Yeh SR FAU - Rousseau, Denis L AU - Rousseau DL LA - eng GR - R01 GM074982/GM/NIGMS NIH HHS/United States GR - R01 HL016101/HL/NHLBI NIH HHS/United States GR - HL016101/HL/NHLBI NIH HHS/United States GR - R37 HL016101/HL/NHLBI NIH HHS/United States GR - GM074982/GM/NIGMS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20090627 PL - United States TA - Anal Biochem JT - Analytical biochemistry JID - 0370535 RN - 0 (Propionates) RN - 42VZT0U6YR (Heme) RN - EC 1.9.3.1 (Electron Transport Complex IV) SB - IM MH - Animals MH - Cattle MH - Crystallography, X-Ray MH - Electron Transport Complex IV/*chemistry MH - Heme/*chemistry MH - Models, Molecular MH - Molecular Conformation MH - Propionates/*chemistry MH - Rhodobacter sphaeroides/enzymology MH - Spectrum Analysis, Raman MH - *Vibration PMC - PMC3418657 MID - NIHMS138983 EDAT- 2009/07/01 09:00 MHDA- 2009/11/03 06:00 PMCR- 2012/08/14 CRDT- 2009/07/01 09:00 PHST- 2009/04/22 00:00 [received] PHST- 2009/06/24 00:00 [accepted] PHST- 2009/07/01 09:00 [entrez] PHST- 2009/07/01 09:00 [pubmed] PHST- 2009/11/03 06:00 [medline] PHST- 2012/08/14 00:00 [pmc-release] AID - S0003-2697(09)00456-4 [pii] AID - 10.1016/j.ab.2009.06.035 [doi] PST - ppublish SO - Anal Biochem. 2009 Nov 1;394(1):141-3. doi: 10.1016/j.ab.2009.06.035. Epub 2009 Jun 27.