Electron cryo-microscopy of the eukaryotic translation initiation factor 2B from Homo sapiens (updated model of PDB ID: 6CAJ)
Domain Annotation: SCOP2 Classification SCOP2 Database Homepage
| Chains | Type | Family Name | Domain Identifier | Family Identifier | Provenance Source (Version) |
|---|---|---|---|---|---|
| J [auth G] | SCOP2B Superfamily | NagB/RpiA/CoA transferase-like | 8101599 | 3000693 | SCOP2B (2022-06-29) |
| I [auth H] | SCOP2B Superfamily | NagB/RpiA/CoA transferase-like | 8101599 | 3000693 | SCOP2B (2022-06-29) |
Domain Annotation: ECOD Classification ECOD Database Homepage
| Chains | Family Name | Domain Identifier | Architecture | Possible Homology | Homology | Topology | Family | Provenance Source (Version) |
|---|---|---|---|---|---|---|---|---|
| J [auth G] | IF-2B_N_1 | e7l7gG1 | A: alpha bundles | X: Translation initiation factor eIF-2B delta subunit N-terminal helical domain (From Topology) | H: Translation initiation factor eIF-2B delta subunit N-terminal helical domain (From Topology) | T: Translation initiation factor eIF-2B delta subunit N-terminal helical domain | F: IF-2B_N_1 | ECOD (1.6) |
| J [auth G] | IF-2B_C | e7l7gG2 | A: a/b three-layered sandwiches | X: Rossmann-like | H: Rossmann-related | T: NagB/RpiA/CoA transferase-like | F: IF-2B_C | ECOD (1.6) |
| I [auth H] | IF-2B_N_1 | e7l7gH2 | A: alpha bundles | X: Translation initiation factor eIF-2B delta subunit N-terminal helical domain (From Topology) | H: Translation initiation factor eIF-2B delta subunit N-terminal helical domain (From Topology) | T: Translation initiation factor eIF-2B delta subunit N-terminal helical domain | F: IF-2B_N_1 | ECOD (1.6) |
| I [auth H] | IF-2B_C | e7l7gH1 | A: a/b three-layered sandwiches | X: Rossmann-like | H: Rossmann-related | T: NagB/RpiA/CoA transferase-like | F: IF-2B_C | ECOD (1.6) |
| H [auth E] | IF-2B_N_1 | e7l7gE2 | A: alpha bundles | X: Translation initiation factor eIF-2B delta subunit N-terminal helical domain (From Topology) | H: Translation initiation factor eIF-2B delta subunit N-terminal helical domain (From Topology) | T: Translation initiation factor eIF-2B delta subunit N-terminal helical domain | F: IF-2B_N_1 | ECOD (1.6) |
| H [auth E] | IF-2B_C | e7l7gE1 | A: a/b three-layered sandwiches | X: Rossmann-like | H: Rossmann-related | T: NagB/RpiA/CoA transferase-like | F: IF-2B_C | ECOD (1.6) |
| D [auth F] | IF-2B_N_1 | e7l7gF2 | A: alpha bundles | X: Translation initiation factor eIF-2B delta subunit N-terminal helical domain (From Topology) | H: Translation initiation factor eIF-2B delta subunit N-terminal helical domain (From Topology) | T: Translation initiation factor eIF-2B delta subunit N-terminal helical domain | F: IF-2B_N_1 | ECOD (1.6) |
| D [auth F] | IF-2B_C | e7l7gF1 | A: a/b three-layered sandwiches | X: Rossmann-like | H: Rossmann-related | T: NagB/RpiA/CoA transferase-like | F: IF-2B_C | ECOD (1.6) |
| G [auth D] | KOG1465 | e7l7gD1 | A: alpha bundles | X: Translation initiation factor eIF-2B delta subunit N-terminal helical domain (From Topology) | H: Translation initiation factor eIF-2B delta subunit N-terminal helical domain (From Topology) | T: Translation initiation factor eIF-2B delta subunit N-terminal helical domain | F: KOG1465 | ECOD (1.6) |
| G [auth D] | IF-2B_C | e7l7gD2 | A: a/b three-layered sandwiches | X: Rossmann-like | H: Rossmann-related | T: NagB/RpiA/CoA transferase-like | F: IF-2B_C | ECOD (1.6) |
| C | KOG1465 | e7l7gC2 | A: alpha bundles | X: Translation initiation factor eIF-2B delta subunit N-terminal helical domain (From Topology) | H: Translation initiation factor eIF-2B delta subunit N-terminal helical domain (From Topology) | T: Translation initiation factor eIF-2B delta subunit N-terminal helical domain | F: KOG1465 | ECOD (1.6) |
| C | IF-2B_C | e7l7gC1 | A: a/b three-layered sandwiches | X: Rossmann-like | H: Rossmann-related | T: NagB/RpiA/CoA transferase-like | F: IF-2B_C | ECOD (1.6) |
| F [auth I] | NTP_transferase | e7l7gI1 | A: a/b three-layered sandwiches | X: Nucleotide-diphospho-sugar transferases (From Topology) | H: Nucleotide-diphospho-sugar transferases (From Topology) | T: Nucleotide-diphospho-sugar transferases | F: NTP_transferase | ECOD (1.6) |
| B [auth J] | NTP_transferase | e7l7gJ1 | A: a/b three-layered sandwiches | X: Nucleotide-diphospho-sugar transferases (From Topology) | H: Nucleotide-diphospho-sugar transferases (From Topology) | T: Nucleotide-diphospho-sugar transferases | F: NTP_transferase | ECOD (1.6) |
| E [auth A] | Hexapep_2_1 | e7l7gA1 | A: beta duplicates or obligate multimers | X: Single-stranded left-handed beta-helix | H: Trimeric LpxA-like enzymes (From Topology) | T: Trimeric LpxA-like enzymes | F: Hexapep_2_1 | ECOD (1.6) |
| E [auth A] | NTP_transferase | e7l7gA2 | A: a/b three-layered sandwiches | X: Nucleotide-diphospho-sugar transferases (From Topology) | H: Nucleotide-diphospho-sugar transferases (From Topology) | T: Nucleotide-diphospho-sugar transferases | F: NTP_transferase | ECOD (1.6) |
| A [auth B] | Hexapep_2_1 | e7l7gB1 | A: beta duplicates or obligate multimers | X: Single-stranded left-handed beta-helix | H: Trimeric LpxA-like enzymes (From Topology) | T: Trimeric LpxA-like enzymes | F: Hexapep_2_1 | ECOD (1.6) |
| A [auth B] | NTP_transferase | e7l7gB2 | A: a/b three-layered sandwiches | X: Nucleotide-diphospho-sugar transferases (From Topology) | H: Nucleotide-diphospho-sugar transferases (From Topology) | T: Nucleotide-diphospho-sugar transferases | F: NTP_transferase | ECOD (1.6) |
Domain Annotation: CATH CATH Database Homepage
Protein Family Annotation Pfam Database Homepage
| Chains | Accession | Name | Description | Comments | Source |
|---|---|---|---|---|---|
| I [auth H], J [auth G] | PF01008 | Initiation factor 2 subunit family (IF-2B) | Initiation factor 2 subunit family | - | Family |
| D [auth F], H [auth E] | PF01008 | Initiation factor 2 subunit family (IF-2B) | Initiation factor 2 subunit family | - | Family |
| C, G [auth D] | PF01008 | Initiation factor 2 subunit family (IF-2B) | Initiation factor 2 subunit family | - | Family |
| B [auth J], F [auth I] | PF00483 | Nucleotidyl transferase (NTP_transferase) | Nucleotidyl transferase | - | Family |
Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage
InterPro: Protein Family Classification InterPro Database Homepage
Pharos: Disease Associations Pharos Homepage Annotation
| Chains | Drug Target   | Associated Disease |
|---|---|---|
| I [auth H], J [auth G] | :  Q14232 | |
| D [auth F], H [auth E] | :  Q9UI10 | |
| C, G [auth D] | :  P49770 | |
| B [auth J], F [auth I] | :  Q9NR50 | |
| A [auth B], E [auth A] | :  Q13144 |














