| Domain | Name | Category | Type | 
	
		| IPR000489  | Pterin-binding domain | Domain | Domain | 
	
		| IPR003726  | Homocysteine-binding domain | Domain | Domain | 
	
		| IPR003759  | Cobalamin (vitamin B12)-binding module, cap domain | Domain | Domain | 
	
		| IPR004223  | Vitamin B12-dependent methionine synthase, activation domain | Domain | Domain | 
	
		| IPR006158  | Cobalamin (vitamin B12)-binding domain | Domain | Domain | 
	
		| IPR011005  | Dihydropteroate synthase-like | Family | Homologous superfamily | 
	
		| IPR011822  | Cobalamin-dependent methionine synthase | Family | Family | 
	
		| IPR033706  | Methionine synthase, B12-binding domain | Domain | Domain | 
	
		| IPR036589  | Homocysteine-binding domain superfamily | Family | Homologous superfamily | 
	
		| IPR036594  | Methionine synthase domain | Family | Homologous superfamily | 
	
		| IPR036724  | Cobalamin-binding domain superfamily | Family | Homologous superfamily | 
	
		| IPR037010  | Vitamin B12-dependent methionine synthase, activation domain superfamily | Family | Homologous superfamily |