1GEB:
reference: X-ray crystal structure and catalytic properties of Thr252Ile mutant of cytochrome P450cam: roles of Thr252 and water in the active center., Hishiki T, Shimada H, Nagano S, Egawa T, Kanamori Y, Makino R, Park SY, Adachi S, Shiro Y, Ishimura Y, J Biochem (Tokyo) 2000 Dec;128(6):965-74. PMID: 11098139

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