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ID of heme	Distortion Sort by saddling ruffling doming breathing default	Axial ligands on heme		Function & structure
4l21-A-301	`sad. -0.13 ruf. +0.15 dom. -0.19 bre. +0.02`	NO	chainID: A, resSeq: 302, molecule: NITRIC OXIDE	unclassified oligomeric count: 1 pocket vol.: 511.0 Å³ d(Fe-oop): 0.044 Å
4l21-A-301	`sad. -0.13 ruf. +0.15 dom. -0.19 bre. +0.02`	Not assigned.