Algorithms|Amino Acid Motifs|Amino Acid Sequence|Animals|COP9 Signalosome Complex|Computational Biology|Cysteine Endopeptidases|Databases, Protein|Eukaryotic Initiation Factor-3|Genome|Humans|Molecular Sequence Data|Multienzyme Complexes|Multiprotein Complexes|Peptide Hydrolases|Peptides|Proteasome Endopeptidase Complex|Protein Structure, Tertiary|Sequence Homology, Amino Acid|Signal Transduction|Transcription Factors|Ubiquitin