4.6.1.25	a [pre-mRNA fragment]- adenosine-2',3'-cyclophosphate + H2O = a [pre-mRNAfragment]-3'-adenosine-3'-phosphate	
4.6.1.25	a [pre-mRNA]-containing guanosine-adenosine + H2O = a 5' hydroxy-guanosine-[pre-mRNA fragment] + a [pre-mRNA fragment]-3'-adenosine-3'-phosphate	
4.6.1.25	a [pre-mRNA]-containing guanosine-adenosine + H2O = a 5' hydroxy-guanosine-[pre-mRNA fragment] + a [pre-mRNA fragment]-adenosine-2',3'-cyclophosphate