Amino Acid Motifs|Amino Acid Sequence|Animals|Binding Sites|Computational Biology|Conserved Sequence|Databases, Protein|Evolution, Molecular|Giardia lamblia|Guanine|Humans|Methyltransferases|Models, Molecular|Molecular Sequence Data|Multigene Family|Mutagenesis, Site-Directed|Phylogeny|Protein Structure, Quaternary|Protozoan Proteins|RNA Caps|Saccharomyces cerevisiae Proteins|Structure-Activity Relationship