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ID of heme	Distortion Sort by saddling ruffling doming breathing	Axial ligands on heme		Function & structure
1u9u-A-90	`sad. +0.40 ruf. +0.22 dom. -0.15 bre. -0.05`	HIS	chainID: A, resSeq: 39, molecule: Cytochrome b5	electron transporter oligomeric count: 1 pocket vol.: 522.0 Å³ d(Fe-oop): 0.015 Å
1u9u-A-90	`sad. +0.40 ruf. +0.22 dom. -0.15 bre. -0.05`	HIS	chainID: A, resSeq: 63, molecule: Cytochrome b5