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ID of heme	Distortion Sort by saddling ruffling doming breathing	Axial ligands on heme		Function & structure
4upn-A-750	`sad. -0.45 ruf. -0.42 dom. +0.62 bre. -0.05`	CYS	chainID: A, resSeq: 415, molecule: NEURONAL NITRIC OXIDE SYNTHASE	oxidoreductase oligomeric count: 2 pocket vol.: 539.0 Å³ d(Fe-oop): 0.042 Å
4upn-A-750	`sad. -0.45 ruf. -0.42 dom. +0.62 bre. -0.05`	Not assigned.
4upn-B-750	`sad. -0.61 ruf. -0.34 dom. +0.90 bre. +0.26`	CYS	chainID: B, resSeq: 415, molecule: NEURONAL NITRIC OXIDE SYNTHASE	oxidoreductase oligomeric count: 2 pocket vol.: 561.0 Å³ d(Fe-oop): 0.049 Å
4upn-B-750	`sad. -0.61 ruf. -0.34 dom. +0.90 bre. +0.26`	Not assigned.