Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2 FamilyIF2B-like 8101522 4002100 SCOP2 (2022-06-29)
ASCOP2 SuperfamilyNagB/RpiA/CoA transferase-like 8101523 3000693 SCOP2 (2022-06-29)
H [auth B]SCOP2B SuperfamilyNagB/RpiA/CoA transferase-like 8101523 3000693 SCOP2B (2022-06-29)
KSCOP2B SuperfamilyeIF2alpha middle domain-like 8042148 3001761 SCOP2B (2022-06-29)
KSCOP2B SuperfamilyNucleic acid-binding proteins 8042149 3000135 SCOP2B (2022-06-29)
N [auth L]SCOP2B SuperfamilyeIF2alpha middle domain-like 8042148 3001761 SCOP2B (2022-06-29)
N [auth L]SCOP2B SuperfamilyNucleic acid-binding proteins 8042149 3000135 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
AIF-2B_N_1e6i3mA1 A: alpha bundlesX: 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 domainF: IF-2B_N_1ECOD (1.6)
AIF-2B_Ce6i3mA2 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NagB/RpiA/CoA transferase-likeF: IF-2B_CECOD (1.6)
H [auth B]IF-2B_N_1e6i3mB1 A: alpha bundlesX: 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 domainF: IF-2B_N_1ECOD (1.6)
H [auth B]IF-2B_Ce6i3mB2 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NagB/RpiA/CoA transferase-likeF: IF-2B_CECOD (1.6)
B [auth C]IF-2B_N_1e6i3mC1 A: alpha bundlesX: 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 domainF: IF-2B_N_1ECOD (1.6)
B [auth C]IF-2B_Ce6i3mC2 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NagB/RpiA/CoA transferase-likeF: IF-2B_CECOD (1.6)
C [auth D]IF-2B_N_1e6i3mD2 A: alpha bundlesX: 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 domainF: IF-2B_N_1ECOD (1.6)
C [auth D]IF-2B_Ce6i3mD1 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NagB/RpiA/CoA transferase-likeF: IF-2B_CECOD (1.6)
D [auth E]KOG1465e6i3mE2 A: alpha bundlesX: 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 domainF: KOG1465ECOD (1.6)
D [auth E]IF-2B_Ce6i3mE1 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NagB/RpiA/CoA transferase-likeF: IF-2B_CECOD (1.6)
J [auth F]KOG1465e6i3mF1 A: alpha bundlesX: 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 domainF: KOG1465ECOD (1.6)
J [auth F]IF-2B_Ce6i3mF2 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: NagB/RpiA/CoA transferase-likeF: IF-2B_CECOD (1.6)
E [auth G]Hexapep_2_1e6i3mG2 A: beta duplicates or obligate multimersX: Single-stranded left-handed beta-helixH: Trimeric LpxA-like enzymes (From Topology)T: Trimeric LpxA-like enzymesF: Hexapep_2_1ECOD (1.6)
E [auth G]NTP_transferasee6i3mG1 A: a/b three-layered sandwichesX: Nucleotide-diphospho-sugar transferases (From Topology)H: Nucleotide-diphospho-sugar transferases (From Topology)T: Nucleotide-diphospho-sugar transferasesF: NTP_transferaseECOD (1.6)
I [auth H]Hexapep_2_1e6i3mH2 A: beta duplicates or obligate multimersX: Single-stranded left-handed beta-helixH: Trimeric LpxA-like enzymes (From Topology)T: Trimeric LpxA-like enzymesF: Hexapep_2_1ECOD (1.6)
I [auth H]NTP_transferasee6i3mH1 A: a/b three-layered sandwichesX: Nucleotide-diphospho-sugar transferases (From Topology)H: Nucleotide-diphospho-sugar transferases (From Topology)T: Nucleotide-diphospho-sugar transferasesF: NTP_transferaseECOD (1.6)
F [auth I]NTP_transferasee6i3mI1 A: a/b three-layered sandwichesX: Nucleotide-diphospho-sugar transferases (From Topology)H: Nucleotide-diphospho-sugar transferases (From Topology)T: Nucleotide-diphospho-sugar transferasesF: NTP_transferaseECOD (1.6)
G [auth J]NTP_transferasee6i3mJ1 A: a/b three-layered sandwichesX: Nucleotide-diphospho-sugar transferases (From Topology)H: Nucleotide-diphospho-sugar transferases (From Topology)T: Nucleotide-diphospho-sugar transferasesF: NTP_transferaseECOD (1.6)
KS1_1e6i3mK2 A: beta barrelsX: OB-foldH: Nucleic acid-binding proteins (From Topology)T: Nucleic acid-binding proteinsF: S1_1ECOD (1.6)
KEIF_2_alpha_Ne6i3mK1 A: alpha arraysX: HhH/H2THH: eIF2alpha middle domain (From Topology)T: eIF2alpha middle domainF: EIF_2_alpha_NECOD (1.6)
KEIF_2_alpha_Ce6i3mK3 A: a+b two layersX: Alpha-beta plaitsH: eIF-2-alpha, C-terminal domain (From Topology)T: eIF-2-alpha, C-terminal domainF: EIF_2_alpha_CECOD (1.6)
N [auth L]S1_1e6i3mL2 A: beta barrelsX: OB-foldH: Nucleic acid-binding proteins (From Topology)T: Nucleic acid-binding proteinsF: S1_1ECOD (1.6)
N [auth L]EIF_2_alpha_Ne6i3mL3 A: alpha arraysX: HhH/H2THH: eIF2alpha middle domain (From Topology)T: eIF2alpha middle domainF: EIF_2_alpha_NECOD (1.6)
N [auth L]EIF_2_alpha_Ce6i3mL1 A: a+b two layersX: Alpha-beta plaitsH: eIF-2-alpha, C-terminal domain (From Topology)T: eIF-2-alpha, C-terminal domainF: EIF_2_alpha_CECOD (1.6)
M [auth O]GTP_EFTU_D2_2e6i3mO4 A: beta barrelsX: cradle loop barrelH: RIFT-relatedT: Alanine racemase-CF: GTP_EFTU_D2_2ECOD (1.6)
M [auth O]eIF2_Ce6i3mO2 A: beta barrelsX: cradle loop barrelH: RIFT-relatedT: Aminomethyltransferase beta-barrel domainF: eIF2_CECOD (1.6)
M [auth O]MnmE_helical_2nde6i3mO3 A: a/b three-layered sandwichesX: P-loop domains-likeH: P-loop domains-relatedT: P-loop containing nucleoside triphosphate hydrolasesF: MnmE_helical_2ndECOD (1.6)
M [auth O]KOG0466e6i3mO1 A: few secondary structure elementsX: Rubredoxin-likeH: Rubredoxin-relatedT: Rubredoxin-relatedF: KOG0466ECOD (1.6)
PGTP_EFTU_D2_2e6i3mP4 A: beta barrelsX: cradle loop barrelH: RIFT-relatedT: Alanine racemase-CF: GTP_EFTU_D2_2ECOD (1.6)
PeIF2_Ce6i3mP3 A: beta barrelsX: cradle loop barrelH: RIFT-relatedT: Aminomethyltransferase beta-barrel domainF: eIF2_CECOD (1.6)
PMnmE_helical_2nde6i3mP2 A: a/b three-layered sandwichesX: P-loop domains-likeH: P-loop domains-relatedT: P-loop containing nucleoside triphosphate hydrolasesF: MnmE_helical_2ndECOD (1.6)
PKOG0466e6i3mP1 A: few secondary structure elementsX: Rubredoxin-likeH: Rubredoxin-relatedT: Rubredoxin-relatedF: KOG0466ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A,
H [auth B]
PF01008Initiation factor 2 subunit family (IF-2B)Initiation factor 2 subunit family- Family
B [auth C],
C [auth D]
PF01008Initiation factor 2 subunit family (IF-2B)Initiation factor 2 subunit family- Family
D [auth E],
J [auth F]
PF01008Initiation factor 2 subunit family (IF-2B)Initiation factor 2 subunit family- Family
E [auth G],
I [auth H]
PF00483Nucleotidyl transferase (NTP_transferase)Nucleotidyl transferase- Family
K,
N [auth L]
PF07541Eukaryotic translation initiation factor 2 alpha subunit (EIF_2_alpha)Eukaryotic translation initiation factor 2 alpha subunit- Family
K,
N [auth L]
PF00575S1 RNA binding domain (S1)S1 RNA binding domainThe S1 domain occurs in a wide range of RNA associated proteins. It is structurally similar to cold shock protein which binds nucleic acids. The S1 domain has an OB-fold structure.Domain
M [auth O],
P
PF00009Elongation factor Tu GTP binding domain (GTP_EFTU)Elongation factor Tu GTP binding domainThis domain contains a P-loop motif, also found in several other families such as Pfam:PF00071, Pfam:PF00025 and Pfam:PF00063. Elongation factor Tu consists of three structural domains, this plus two C-terminal beta barrel domains.Domain
M [auth O],
P
PF09173Initiation factor eIF2 gamma, C terminal (eIF2_C)Initiation factor eIF2 gamma, C terminalMembers of this family, which are found in the initiation factors eIF2 and EF-Tu, adopt a structure consisting of a beta barrel with Greek key topology. They are required for formation of the ternary complex with GTP and initiator tRNA [1].Domain
M [auth O],
P
PF03144Elongation factor Tu domain 2 (GTP_EFTU_D2)Elongation factor Tu domain 2Elongation factor Tu consists of three structural domains, this is the second domain. This domain adopts a beta barrel structure. This the second domain is involved in binding to charged tRNA [1]. This domain is also found in other proteins such as e ...Elongation factor Tu consists of three structural domains, this is the second domain. This domain adopts a beta barrel structure. This the second domain is involved in binding to charged tRNA [1]. This domain is also found in other proteins such as elongation factor G and translation initiation factor IF-2. This domain is structurally related to Pfam:PF03143, and in fact has weak sequence matches to this domain.
Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A,
H [auth B]
Translation initiation factor eIF-2B subunit alpha
B [auth C],
C [auth D]
Translation initiation factor eIF-2B subunit delta
D [auth E],
J [auth F]
Translation initiation factor eIF-2B subunit beta
E [auth G],
I [auth H]
Translation initiation factor eIF-2B subunit epsilon
F [auth I],
G [auth J]
Translation initiation factor eIF-2B subunit gamma
K,
N [auth L]
Eukaryotic translation initiation factor 2 subunit alpha
L [auth M],
O [auth N]
Eukaryotic translation initiation factor 2 subunit beta
M [auth O],
P
Eukaryotic translation initiation factor 2 subunit gamma

InterPro: Protein Family Classification InterPro Database Homepage

ChainsAccessionNameType
A,
H [auth B]
IPR000649Initiation factor 2B-relatedFamily
A,
H [auth B]
IPR051501Eukaryotic initiation factor 2B subunits alpha/beta/deltaFamily
A,
H [auth B]
IPR042529Initiation factor 2B-like, C-terminalHomologous Superfamily
A,
H [auth B]
IPR037171NagB/RpiA transferase-likeHomologous Superfamily
A,
H [auth B]
IPR042528Translation initiation factor eIF-2B subunit alpha, N-terminalHomologous Superfamily
B [auth C],
C [auth D]
IPR042529Initiation factor 2B-like, C-terminalHomologous Superfamily
B [auth C],
C [auth D]
IPR037171NagB/RpiA transferase-likeHomologous Superfamily
B [auth C],
C [auth D]
IPR000649Initiation factor 2B-relatedFamily
D [auth E],
J [auth F]
IPR051855Eukaryotic initiation factor 2B subunit betaFamily
D [auth E],
J [auth F]
IPR000649Initiation factor 2B-relatedFamily
D [auth E],
J [auth F]
IPR027363Methylthioribose-1-phosphate isomerase, N-terminalHomologous Superfamily
D [auth E],
J [auth F]
IPR042529Initiation factor 2B-like, C-terminalHomologous Superfamily
D [auth E],
J [auth F]
IPR037171NagB/RpiA transferase-likeHomologous Superfamily
E [auth G],
I [auth H]
IPR044123Translation initiation factor eIF-2B subunit epsilon, W2 domainDomain
E [auth G],
I [auth H]
IPR016024Armadillo-type foldHomologous Superfamily
E [auth G],
I [auth H]
IPR003307W2 domainDomain
E [auth G],
I [auth H]
IPR035543Translation initiation factor eIF-2B subunit epsilon, N-terminalDomain
E [auth G],
I [auth H]
IPR011004Trimeric LpxA-like superfamilyHomologous Superfamily
E [auth G],
I [auth H]
IPR005835Nucleotidyl transferase domainDomain
E [auth G],
I [auth H]
IPR029044Nucleotide-diphospho-sugar transferasesHomologous Superfamily
E [auth G],
I [auth H]
IPR051956eIF2B Complex Subunit EpsilonFamily
F [auth I],
G [auth J]
IPR051960Eukaryotic Initiation Factor 2B Subunit GammaFamily
F [auth I],
G [auth J]
IPR011004Trimeric LpxA-like superfamilyHomologous Superfamily
F [auth I],
G [auth J]
IPR029044Nucleotide-diphospho-sugar transferasesHomologous Superfamily
K,
N [auth L]
IPR003029S1 domainDomain
K,
N [auth L]
IPR044126IF2a, S1-like domainDomain
K,
N [auth L]
IPR024054Translation initiation factor 2, alpha subunit, middle domain superfamilyHomologous Superfamily
K,
N [auth L]
IPR012340Nucleic acid-binding, OB-foldHomologous Superfamily
K,
N [auth L]
IPR024055Translation initiation factor 2, alpha subunit, C-terminalHomologous Superfamily
K,
N [auth L]
IPR011488Translation initiation factor 2, alpha subunitFamily
L [auth M],
O [auth N]
IPR016190Translation initiation factor IF2/IF5, zinc-bindingHomologous Superfamily
L [auth M],
O [auth N]
IPR016189Translation initiation factor IF2/IF5, N-terminalHomologous Superfamily
L [auth M],
O [auth N]
IPR002735Translation initiation factor IF2/IF5 domainDomain
L [auth M],
O [auth N]
IPR045196Translation initiation factor IF2/IF5Family
M [auth O],
P
IPR000795Translational (tr)-type GTP-binding domainDomain
M [auth O],
P
IPR009001Translation elongation factor EF1A/initiation factor IF2gamma, C-terminalHomologous Superfamily
M [auth O],
P
IPR004161Translation elongation factor EFTu-like, domain 2Domain
M [auth O],
P
IPR050543Eukaryotic Initiation Factor 2 Gamma SubunitFamily
M [auth O],
P
IPR044128Initiation factor eIF2 gamma, GTP-binding domainDomain
M [auth O],
P
IPR015256Initiation factor eIF2 gamma, C-terminalDomain
M [auth O],
P
IPR009000Translation protein, beta-barrel domain superfamilyHomologous Superfamily
M [auth O],
P
IPR044127Initiation factor eIF2 gamma, domain 2Domain
M [auth O],
P
IPR027417P-loop containing nucleoside triphosphate hydrolaseHomologous Superfamily

Protein Modification Annotation

Modified Residue(s)
ChainResidue(s)Description
K,
N [auth L]
SEP Parent Component: SER

RESIDAA0037

PSI-MOD :  O-phospho-L-serine MOD:00046