Bending the spec a bit at 123 (regarding treatment of leftover base pairs): 
sub f {
$_=pop;y/ACUG/0123/;s|(.)(.)(.)|(map{ord>91?uc:(),uc}
'KnKttiIMRsRQhQppllrr.y.ssLfL.cWEdEaavvgg'=~/./g)[$1*16+$2*4+$3]|eg;$_
}

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   MeowChow                                   
               s aamecha.s a..a\u$&owag.print

In reply to Re: Re: (Golf) RNA Genetic Code Translator by MeowChow
in thread (Golf) RNA Genetic Code Translator by tadman

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