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ID of heme	Distortion Sort by saddling ruffling doming breathing	Axial ligands on heme		Function & structure
4fdk-A-500	`sad. -0.85 ruf. +0.88 dom. +0.01 bre. +0.17`	HIS	chainID: A, resSeq: 102, molecule: Methyl-accepting chemotaxis protein	unclassified oligomeric count: 1 pocket vol.: 392.0 Å³ d(Fe-oop): 0.040 Å
4fdk-A-500	`sad. -0.85 ruf. +0.88 dom. +0.01 bre. +0.17`	OXY	chainID: A, resSeq: 501, molecule: OXYGEN MOLECULE
4fdk-B-500	`sad. -0.64 ruf. +0.93 dom. -0.11 bre. +0.07`	HIS	chainID: B, resSeq: 102, molecule: Methyl-accepting chemotaxis protein	unclassified oligomeric count: 1 pocket vol.: 423.0 Å³ d(Fe-oop): 0.074 Å
4fdk-B-500	`sad. -0.64 ruf. +0.93 dom. -0.11 bre. +0.07`	OXY	chainID: B, resSeq: 501, molecule: OXYGEN MOLECULE