To facilitate dissolution in the reaction mixture, {HEAD ~ the enzyme substrate} can be provided in an aqueous solution, partially aqueous solution, or non aqueous stock solution that is miscible with the other components of {TAIL ~ the reaction mixture} 
To facilitate dissolution in the reaction mixture , { HEAD ~ the enzyme substrate } can be provided in an aqueous solution , partially aqueous solution , or non aqueous stock solution that is miscible with the other components of { TAIL ~ the reaction mixture }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL