#Save this script as a text file (as2) in the same folder
#as your RasMol application.
#then type 'script as2' on the RasMol command line and press enter.
#define the Active Site. Include Zn, AS residues,
#all members of substrate chain (S).
define AS zn,69,72,196,144,145,248,270,127,*S
#define substrate as all members of substrate chain (S).
define substrate *S