Figure 2.

Domain architecture of (a) Class I and (b) Class II LmaaRSs, aaRS associated proteins, and trans editing domains. The box line type for domain boundaries correspond to the domain prediction procedure (solid line for PFAM HMM predictions; dotted line for SUPERFAMILY based HMM predictions). The beginning of ELR motif is denoted by the residue number in red color font. The beginning of heptapeptide motif is denoted by an underlined residue number. The grey boxes corresponds to lower prediction accuracy (E:value: greater than 1E-05).