Table 4.

Summary of the residues involved in the cysteine triad are known to determine in vivo dimer activation status, as well as responses to metabolites. Cys I and CysII are important for disulfide bond formation and dimer inactivation. The wheat residues are from Brew-Appiah et al. [12], and the barley and rice residues are from Wanniarachchi et al. [14]. dG1 and dG2 refer to AOX1d Group 1 and AOX1d Group 2 respectively. * Indicates diploid wheat isoforms.

	AOX Isoforms	Critical Cysteines			Putative Dimer Status In Vivo
		CysI	CysII	CysIII
	HvAOX1a	C	C	L	Inactive
	TaAOX1a-2AL	C	C	L	Inactive
	TaAOX1a-2BL	C	C	L	Inactive
	TaAOX1a-2DL	C	C	L	Inactive
	TaAOX1a-like-2DL	-	-	L	Active
	TuAOX1a *	-	C	L	Active
	AetAOX1a *	-	C	L	Active
	OsAOX1a	C	C	L	Inactive
	HvAOX1c	C	C	L	Inactive
	TaAOX1c-6AL	C	C	L	Inactive
	TaAOX1c-6BL	C	C	L	Inactive
	TaAOX1c-6DL	C	C	L	Inactive
	TuAOX1c *	E	C	L	Active
	OsAOX1c	C	C	L	Inactive
	put.TaAOX1e-3DS	C	C	L	Inactive
	AetAOX1e *	C	C	L	Inactive
	OsAOX1e	C	C	L	Inactive
	OsAOX1d	S	S	L	Active
dG1	HvAOX1d1	C	S	L	Active
	TaAOX1d-2AL.1	S	S	L	Active
	put.TaAOX1d-like-4AS	S	S	L	Active
	TuAOX1d.2 *	S	S	L	Active
	AetAOX1d-like *	S	S	L	Active
dG2	HvAOX1d2	C	S	L	Active
	TaAOX1d-2AL.2	C	S	L	Active
	TaAOX1d-2DL	C	S	L	Active
	TuAOX1d.1 *	C	S	L	Active
	AetAOX1d *	C	S	L	Active