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ID of heme	Distortion Sort by saddling ruffling doming breathing	Axial ligands on heme		Function & structure
1u18-A-201	`sad. +0.57 ruf. +0.34 dom. +0.07 bre. -0.07`	HSM	chainID: A, resSeq: 401, molecule: HISTAMINE	unclassified oligomeric count: 1 pocket vol.: 613.0 Å³ d(Fe-oop): 0.024 Å
1u18-A-201	`sad. +0.57 ruf. +0.34 dom. +0.07 bre. -0.07`	HOH	chainID: A, resSeq: 410, molecule: water
1u18-B-201	`sad. +0.38 ruf. +0.32 dom. -0.09 bre. -0.19`	HSM	chainID: B, resSeq: 402, molecule: HISTAMINE	unclassified oligomeric count: 1 pocket vol.: 650.0 Å³ d(Fe-oop): 0.044 Å
1u18-B-201	`sad. +0.38 ruf. +0.32 dom. -0.09 bre. -0.19`	HOH	chainID: B, resSeq: 417, molecule: water