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ABSTRACT:
SUBMITTER: Sugishima M
PROVIDER: S-EPMC2335079 | biostudies-literature | 2007 Jun
REPOSITORIES: biostudies-literature
Sugishima Masakazu M Oda Kenji K Ogura Takashi T Sakamoto Hiroshi H Noguchi Masato M Fukuyama Keiichi K
Acta crystallographica. Section F, Structural biology and crystallization communications 20070531 Pt 6
Cyanide is a well known potent inhibitor of haem proteins, including haem oxygenase (HO). Generally, cyanide coordinates to the ferric haem iron with a linear binding geometry; the Fe-C-N angle ranges from 160 to 180 degrees . The Fe-C-N angle observed in the crystal structure of haem-HO bound to cyanide prepared at alkaline pH was 166 degrees . Here, it is reported that cyanide can bind to the haem iron in HO in a bent mode when the ternary complex is prepared at neutral pH; a crystal structure ...[more]