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ID of heme	Distortion Sort by saddling ruffling doming breathing	Axial ligands on heme		Function & structure
6hd1-C-502	`sad. -0.04 ruf. +0.30 dom. +0.09 bre. +0.22`	HIS	chainID: C, resSeq: 304, molecule: Metalloreductase STEAP4	oxidoreductase oligomeric count: 3 pocket vol.: 530.0 Å³ d(Fe-oop): 0.011 Å
6hd1-C-502	`sad. -0.04 ruf. +0.30 dom. +0.09 bre. +0.22`	HIS	chainID: C, resSeq: 397, molecule: Metalloreductase STEAP4
6hd1-A-502	`sad. -0.04 ruf. +0.30 dom. +0.09 bre. +0.22`	HIS	chainID: A, resSeq: 304, molecule: Metalloreductase STEAP4	oxidoreductase oligomeric count: 3 pocket vol.: 529.0 Å³ d(Fe-oop): 0.011 Å
6hd1-A-502	`sad. -0.04 ruf. +0.30 dom. +0.09 bre. +0.22`	HIS	chainID: A, resSeq: 397, molecule: Metalloreductase STEAP4
6hd1-B-502	`sad. -0.04 ruf. +0.30 dom. +0.09 bre. +0.22`	HIS	chainID: B, resSeq: 304, molecule: Metalloreductase STEAP4	oxidoreductase oligomeric count: 3 pocket vol.: 532.0 Å³ d(Fe-oop): 0.011 Å
6hd1-B-502	`sad. -0.04 ruf. +0.30 dom. +0.09 bre. +0.22`	HIS	chainID: B, resSeq: 397, molecule: Metalloreductase STEAP4