in reply to (Golf) RNA Genetic Code Translator

My first real attempt came in at 137 characters, not including cosmetic linebreaks:
sub f{ $_=pop;y/UCAG/0123/;s/(.)(.)(.)/substr "FFLLSSSSYY..CC.WLLLLPPPPHHQQRRRRIIIMTTTTNNKKSSRRVVVVAAAADDEEGGGG" ,$1<<4|$2<<2|$3,1/ge;y/0123//d;$_ }
Which I thought was pretty decent, but it's a little behind the times. Strangely when I use the simple, but elegant compression technique introduced by no_slogan, this code expands. I'll have to look into that more.