Annotations: 1G7S

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1g7sa1	All beta proteins	Reductase/isomerase/elongation factor common domain	Translation proteins	Elongation factors	Initiation factor IF2/eIF5b, domains 2 and 4	(Methanothermobacter thermautotrophicus ) [TaxId: 145262 ],	SCOPe (2.08)
A	d1g7sa3	Alpha and beta proteins (a/b)	Initiation factor IF2/eIF5b, domain 3	Initiation factor IF2/eIF5b, domain 3	Initiation factor IF2/eIF5b, domain 3	Initiation factor IF2/eIF5b, domain 3	(Methanothermobacter thermautotrophicus ) [TaxId: 145262 ],	SCOPe (2.08)
A	d1g7sa4	Alpha and beta proteins (a/b)	P-loop containing nucleoside triphosphate hydrolases	P-loop containing nucleoside triphosphate hydrolases	G proteins	Initiation factor IF2/eIF5b, N-terminal (G) domain	(Methanothermobacter thermautotrophicus ) [TaxId: 145262 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Translation factor common region-like	8019784	4004050	SCOP2 (2022-06-29)
A	SCOP2 Family	IF2 C-terminal domain-like	8019792	4004052	SCOP2 (2022-06-29)
A	SCOP2 Family	Initiation factor IF2/eIF5b domain 3-like	8019795	4003620	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Ras-like P-loop GTPases	8019785	3002022	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	EF-Tu post-G domain-like	8019793	3002024	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Initiation factor IF2/eIF5b domain 3-like	8019796	3001128	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	EF-Tu post-G domain-like	8019788	3002024	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	GTP_EFTU_D2_2	e1g7sA1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: GTP_EFTU_D2_2	ECOD (1.6)
A	GTP_EFTU_D4	e1g7sA2	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: GTP_EFTU_D4	ECOD (1.6)
A	MnmE_helical_2nd	e1g7sA3	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: MnmE_helical_2nd	ECOD (1.6)
A	IF-2	e1g7sA4	A: a/b three-layered sandwiches	X: Initiation factor IF2/eIF5b, domain 3 (From Topology)	H: Initiation factor IF2/eIF5b, domain 3 (From Topology)	T: Initiation factor IF2/eIF5b, domain 3	F: IF-2	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)
A	2.40.30.10	Mainly Beta	Beta Barrel	Elongation Factor Tu (Ef-tu)	domain 3	CATH (4.3.0)
A	3.40.50.10050	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Translation initiation factor IF- 2, domain 3	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00009	Elongation factor Tu GTP binding domain (GTP_EFTU)	Elongation factor Tu GTP binding domain	This 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
A	PF03144	Elongation factor Tu domain 2 (GTP_EFTU_D2)	Elongation factor Tu domain 2	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 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
A	PF11987	Translation-initiation factor 2 (IF-2)	Translation-initiation factor 2	IF-2 is a translation initiator in each of the three main phylogenetic domains (Eukaryotes [1], Bacteria [2] and Archaea [3]). IF2 interacts with formylmethionine-tRNA, GTP, IF1, IF3 and both ribosomal subunits [2]. Through these interactions, IF2 pr ...	IF-2 is a translation initiator in each of the three main phylogenetic domains (Eukaryotes [1], Bacteria [2] and Archaea [3]). IF2 interacts with formylmethionine-tRNA, GTP, IF1, IF3 and both ribosomal subunits [2]. Through these interactions, IF2 promotes the binding of the initiator tRNA to the A site in the smaller ribosomal subunit and catalyses the hydrolysis of GTP following initiation-complex formation [2].	Domain
A	PF14578	Elongation factor Tu domain 4 (GTP_EFTU_D4)	Elongation factor Tu domain 4	Elongation factor Tu consists of several structural domains, and this is usually the fourth.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	TRANSLATION INITIATION FACTOR IF2/EIF5B	translation regulator activity binding organic cyclic compound binding translation regulator activity, nucleic acid binding nucleic acid binding translation initiation factor activity translation factor activity, RNA binding guanyl nucleotide binding GTP binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding translation regulator activity binding organic cyclic compound binding translation regulator activity, nucleic acid binding nucleic acid binding translation initiation factor activity translation factor activity, RNA binding guanyl nucleotide binding GTP binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding pyrophosphatase activity GTPase activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides catalytic activity	-	cellular anatomical structure intracellular anatomical structure cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR005225	Small GTP-binding domain	Domain
A	IPR000795	Translational (tr)-type GTP-binding domain	Domain
A	IPR004161	Translation elongation factor EFTu-like, domain 2	Domain
A	IPR029459	Elongation factor Tu-type domain	Domain
A	IPR009000	Translation protein, beta-barrel domain superfamily	Homologous Superfamily
A	IPR015760	Translation initiation factor IF- 2	Family
A	IPR004544	Translation initiation factor aIF-2, archaea	Family
A	IPR036925	Translation initiation factor IF-2, domain 3 superfamily	Homologous Superfamily
A	IPR023115	Translation initiation factor IF- 2, domain 3	Domain
A	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.