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ID of heme	Distortion Sort by saddling ruffling doming breathing	Axial ligands on heme		Function & structure
1ft9-A-300	`sad. -0.11 ruf. +0.09 dom. -0.00 bre. -0.13`	HIS	chainID: A, resSeq: 77, molecule: CARBON MONOXIDE OXIDATION SYSTEM TRANSCRIPTION REGULATOR	unclassified oligomeric count: 2 pocket vol.: 556.0 Å³ d(Fe-oop): 0.053 Å
1ft9-A-300	`sad. -0.11 ruf. +0.09 dom. -0.00 bre. -0.13`	PRO	chainID: B, resSeq: 2, molecule: CARBON MONOXIDE OXIDATION SYSTEM TRANSCRIPTION REGULATOR
1ft9-B-300	`sad. -0.35 ruf. -0.09 dom. +0.16 bre. -0.04`	PRO	chainID: A, resSeq: 2, molecule: CARBON MONOXIDE OXIDATION SYSTEM TRANSCRIPTION REGULATOR	unclassified oligomeric count: 2 pocket vol.: 543.0 Å³ d(Fe-oop): 0.005 Å
1ft9-B-300	`sad. -0.35 ruf. -0.09 dom. +0.16 bre. -0.04`	HIS	chainID: B, resSeq: 77, molecule: CARBON MONOXIDE OXIDATION SYSTEM TRANSCRIPTION REGULATOR