Fig. 2.
Domain architecture of GlnRS. Domains for GlnRS are shown for fungi, eukaryotes (other than fungi), bacteria, the bacterium D. radiodurans, and archaeal GluRS. Major domains are labeled NTD, catalytic domain, anticodon binding domain, and the unique CTD appended to the D. radiodurans GlnRS. Insertion 1, Insertion 2, Insertion 3, and Loop 1 are labeled along with the zinc coordinating residues of the zinc binding motif, which is present only in fungal GlnRS and archaeal GluRS.