4.3.1.14	crotonoyl-CoA + NH3	NH3 in form of NH4Cl	Clostridium sp.	L-3-aminobutyryl-CoA	-	?	453533	
4.3.1.14	Crotonyl pantetheine + NH3	aminated 100% as fast as crotonyl-CoA	Clostridium sp.	Aminobutanoylpantetheine	-	?	2234	
4.3.1.14	Crotonyl pantetheine + NH3	aminated 100% as fast as crotonyl-CoA	Clostridium sp. SB4	Aminobutanoylpantetheine	-	?	2234	
4.3.1.14	Crotonyl-CoA + hydroxylamine	-	Clostridium sp.	CoA + 3-methyl-5-isoxazolidinone	-	?	2235	
4.3.1.14	Crotonyl-CoA + hydroxylamine	-	Clostridium sp. SB4	CoA + 3-methyl-5-isoxazolidinone	-	?	2235	
4.3.1.14	L-3-Aminobutanoyl-CoA	-	Fusobacterium nucleatum	Crotonyl-CoA + NH3	-	?	2233	
4.3.1.14	L-3-Aminobutanoyl-CoA	-	Brevibacterium sp.	Crotonyl-CoA + NH3	-	?	2233	
4.3.1.14	L-3-Aminobutanoyl-CoA	-	Anaerobic bacteria	Crotonyl-CoA + NH3	-	r	2233	
4.3.1.14	L-3-Aminobutanoyl-CoA	r	Clostridium sp.	Crotonyl-CoA + NH3	-	?	2233	
4.3.1.14	L-3-Aminobutanoyl-CoA	only active with the L-isomer	Clostridium sp.	Crotonyl-CoA + NH3	-	?	2233