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ID of heme	Distortion Sort by saddling ruffling doming breathing	Axial ligands on heme		Function & structure
4d31-A-750	`sad. -0.55 ruf. -0.71 dom. +0.21 bre. -0.31`	CYS	chainID: A, resSeq: 415, molecule: NITRIC OXIDE SYNTHASE, BRAIN	oxidoreductase oligomeric count: 2 pocket vol.: 511.0 Å³ d(Fe-oop): 0.123 Å
4d31-A-750	`sad. -0.55 ruf. -0.71 dom. +0.21 bre. -0.31`	OLW	chainID: A, resSeq: 800, molecule: 3-[({2-[2-(1H-imidazol-1-yl)pyrimidin-4-yl]ethyl}amino)methyl]benzonitrile
4d31-B-750	`sad. -0.56 ruf. -0.73 dom. +0.44 bre. -0.26`	CYS	chainID: B, resSeq: 415, molecule: NITRIC OXIDE SYNTHASE, BRAIN	oxidoreductase oligomeric count: 2 pocket vol.: 532.0 Å³ d(Fe-oop): 0.007 Å
4d31-B-750	`sad. -0.56 ruf. -0.73 dom. +0.44 bre. -0.26`	OLW	chainID: B, resSeq: 800, molecule: 3-[({2-[2-(1H-imidazol-1-yl)pyrimidin-4-yl]ethyl}amino)methyl]benzonitrile