1Z9B

Solution structure of the C1-subdomain of Bacillus stearothermophilus translation initiation factor IF2

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF11987	e1z9bA1	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: PF11987	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
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	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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Translation initiation factor IF-2	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	-	intracellular anatomical structure cytoplasm cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR000178	Translation initiation factor IF-2, bacterial-like	Family
A	IPR000795	Translational (tr)-type GTP-binding domain	Domain
A	IPR004161	Translation elongation factor EFTu-like, domain 2	Domain
A	IPR006847	Translation initiation factor IF-2, N-terminal	Domain
A	IPR044145	Translation initiation factor IF-2, domain II	Domain
A	IPR009000	Translation protein, beta-barrel domain superfamily	Homologous Superfamily
A	IPR005225	Small GTP-binding protein domain	Domain
A	IPR015760	Translation initiation factor IF- 2	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 R01GM133198.