| IPR000649 | Initiation factor 2B-related | Family |
| IPR051501 | Eukaryotic initiation factor 2B subunits alpha/beta/delta | Family |
| IPR042529 | Initiation factor 2B-like, C-terminal | Homologous Superfamily |
| IPR037171 | NagB/RpiA transferase-like | Homologous Superfamily |
| IPR042528 | Translation initiation factor eIF-2B subunit alpha, N-terminal | Homologous Superfamily |
| IPR051855 | Eukaryotic initiation factor 2B subunit beta | Family |
| IPR000649 | Initiation factor 2B-related | Family |
| IPR042529 | Initiation factor 2B-like, C-terminal | Homologous Superfamily |
| IPR037171 | NagB/RpiA transferase-like | Homologous Superfamily |
| IPR056764 | EIF2B subunit epsilon/gamma, LbH domain | Domain |
| IPR051960 | Eukaryotic Initiation Factor 2B Subunit Gamma | Family |
| IPR005835 | Nucleotidyl transferase domain | Domain |
| IPR029044 | Nucleotide-diphospho-sugar transferases | Homologous Superfamily |
| IPR000649 | Initiation factor 2B-related | Family |
| IPR042529 | Initiation factor 2B-like, C-terminal | Homologous Superfamily |
| IPR037171 | NagB/RpiA transferase-like | Homologous Superfamily |
| IPR044123 | Translation initiation factor eIF-2B subunit epsilon, W2 domain | Domain |
| IPR016024 | Armadillo-type fold | Homologous Superfamily |
| IPR056764 | EIF2B subunit epsilon/gamma, LbH domain | Domain |
| IPR003307 | W2 domain | Domain |
| IPR035543 | Translation initiation factor eIF-2B subunit epsilon, N-terminal | Domain |
| IPR011004 | Trimeric LpxA-like superfamily | Homologous Superfamily |
| IPR029044 | Nucleotide-diphospho-sugar transferases | Homologous Superfamily |
| IPR051956 | eIF2B Complex Subunit Epsilon | Family |
| IPR044126 | IF2a, S1-like domain | Domain |
| IPR024054 | Translation initiation factor 2, alpha subunit, middle domain superfamily | Homologous Superfamily |
| IPR024055 | Translation initiation factor 2, alpha subunit, C-terminal | Homologous Superfamily |
| IPR003029 | S1 domain | Domain |
| IPR012340 | Nucleic acid-binding, OB-fold | Homologous Superfamily |
| IPR011488 | Translation initiation factor 2, alpha subunit | Family |