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ID of heme	Distortion Sort by saddling ruffling doming breathing	Axial ligands on heme		Function & structure
4d3u-A-901	`sad. -0.37 ruf. -0.37 dom. +0.69 bre. +0.01`	CYS	chainID: A, resSeq: 66, molecule: NITRIC OXIDE SYNTHASE OXYGENASE	oxidoreductase oligomeric count: 2 pocket vol.: 532.0 Å³ d(Fe-oop): 0.225 Å
4d3u-A-901	`sad. -0.37 ruf. -0.37 dom. +0.69 bre. +0.01`	Not assigned.