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ID of heme	Distortion Sort by saddling ruffling doming breathing	Axial ligands on heme		Function & structure
1xk0-A-300	`sad. +0.09 ruf. +0.23 dom. +0.03 bre. -0.15`	HIS	chainID: A, resSeq: 25, molecule: Heme oxygenase 1	oxidoreductase oligomeric count: 1 pocket vol.: 617.0 Å³ d(Fe-oop): 0.088 Å
1xk0-A-300	`sad. +0.09 ruf. +0.23 dom. +0.03 bre. -0.15`	NO	chainID: A, resSeq: 400, molecule: NITRIC OXIDE
1xk0-B-300	`sad. -0.29 ruf. +0.39 dom. -0.34 bre. -0.12`	HIS	chainID: B, resSeq: 25, molecule: Heme oxygenase 1	oxidoreductase oligomeric count: 1 pocket vol.: 613.0 Å³ d(Fe-oop): 0.024 Å
1xk0-B-300	`sad. -0.29 ruf. +0.39 dom. -0.34 bre. -0.12`	Not assigned.