| Domain | Name | Category | Type |
| IPR000924 | Glutamyl/glutaminyl-tRNA synthetase | Family | Family |
| IPR001412 | Aminoacyl-tRNA synthetase, class I, conserved site | Site | Conserved site |
| IPR004514 | Glutamine-tRNA synthetase | Family | Family |
| IPR007638 | Glutaminyl-tRNA synthetase, class Ib, non-specific RNA-binding domain 2 | Domain | Domain |
| IPR007639 | Glutaminyl-tRNA synthetase, class Ib, non-specific RNA-binding domain, N-terminal | Domain | Domain |
| IPR011035 | Ribosomal protein L25/Gln-tRNA synthetase, anti-codon-binding domain superfamily | Family | Homologous superfamily |
| IPR014729 | Rossmann-like alpha/beta/alpha sandwich fold | Family | Homologous superfamily |
| IPR020056 | Ribosomal protein L25/Gln-tRNA synthetase, N-terminal | Family | Homologous superfamily |
| IPR020058 | Glutamyl/glutaminyl-tRNA synthetase, class Ib, catalytic domain | Domain | Domain |
| IPR020059 | Glutamyl/glutaminyl-tRNA synthetase, class Ib, anti-codon binding domain | Domain | Domain |
| IPR042558 | Glutaminyl-tRNA synthetase, class Ib, non-specific RNA-binding domain, N-terminal, subdomain 1 | Family | Homologous superfamily |
| IPR042559 | Glutaminyl-tRNA synthetase, class Ib, non-specific RNA-binding domain, N-terminal, subdomain 2 | Family | Homologous superfamily |