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Yamashita E, Aoyama H, Yao M, Muramoto K, Shinzawa-Itoh K, Yoshikawa S, Tsukihara T.; AOYAMA; YAO. Absolute configuration of the hydroxyfarnesylethyl group of heme A, determined by X-ray structural analysis of bovine heart cytochrome c oxidase using methods applicable at 2.8 Angstrom resolution. Acta Crystallographica D, 2005, s. 1373–1377. DOI: 10.1107/S0907444905023358. PMID 16204889.
Tsukihara T, Shimokata K, Katayama Y, Shimada H, Muramoto K, Aoyama H, Mochizuki M, Shinzawa-Itoh K, Yamashita E, Yao M, Ishimura Y, Yoshikawa S.; SHIMOKATA; KATAYAMA. The low-spin heme of cytochrome c oxidase as the driving element of the proton-pumping process. PNAS, 2003, s. 15304–15309. DOI: 10.1073/pnas.2635097100. PMID 14673090.