Amino Acid Sequence|Animals|DEAD-box RNA Helicases|Endoribonucleases|Gene Silencing|Humans|Markov Chains|Mice|Models, Molecular|Molecular Sequence Data|Protein Folding|Protein Structure, Tertiary|RNA Interference|RNA, Double-Stranded|RNA-Binding Proteins|Ribonuclease III|Sequence Homology, Amino Acid