4N3S

Crystal structure of eukaryotic translation initiation factor eIF5B (399-852) from Saccharomyces cerevisiae, apo form

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	GTP_EFTU_D2_2	e4n3sA2	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: GTP_EFTU_D2_2	ECOD (1.6)
A	MnmE_helical_2nd	e4n3sA1	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	e4n3sA3	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)
B	GTP_EFTU_D2_2	e4n3sB2	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: GTP_EFTU_D2_2	ECOD (1.6)
B	MnmE_helical_2nd	e4n3sB1	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)
B	IF-2	e4n3sB3	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)
B	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)
B	2.40.30.10	Mainly Beta	Beta Barrel	Elongation Factor Tu (Ef-tu)	domain 3	CATH (4.3.0)
B	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, B	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, B	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, B	Eukaryotic translation initiation factor 5B	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 protein binding translation initiation factor binding ribonucleoprotein complex binding protein-containing complex binding ribosome binding RNA binding small ribosomal subunit rRNA binding rRNA binding cation binding metal ion 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	biosynthetic process translational initiation metabolic process cellular process primary metabolic process protein metabolic process macromolecule metabolic process translation gene expression macromolecule biosynthetic process ribonucleoprotein complex biogenesis RNA metabolic process rRNA processing maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) biosynthetic process translational initiation metabolic process cellular process primary metabolic process protein metabolic process macromolecule metabolic process translation gene expression macromolecule biosynthetic process ribonucleoprotein complex biogenesis RNA metabolic process rRNA processing maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) cellular component biogenesis nucleobase-containing compound metabolic process RNA biosynthetic process ribosome biogenesis nucleic acid biosynthetic process maturation of SSU-rRNA cellular component organization or biogenesis RNA processing rRNA metabolic process nucleobase-containing compound biosynthetic process ribosomal small subunit biogenesis nucleic acid metabolic process organelle assembly membraneless organelle assembly cellular component organization organelle organization cellular component assembly cytosolic ribosome assembly ribosome assembly regulation of cellular process regulation of primary metabolic process post-transcriptional regulation of gene expression regulation of biosynthetic process regulation of biological process regulation of translational initiation regulation of protein metabolic process biological regulation regulation of macromolecule metabolic process regulation of gene expression regulation of translation regulation of macromolecule biosynthetic process regulation of metabolic process protein-containing complex organization formation of cytoplasmic translation initiation complex protein-RNA complex assembly protein-RNA complex organization protein-containing complex assembly cytoplasmic translation cytoplasmic translational initiation	membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle cytoplasmic ribonucleoprotein granule intracellular membraneless organelle ribonucleoprotein granule membraneless organelle supramolecular complex cytoplasmic stress granule membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle cytoplasmic ribonucleoprotein granule intracellular membraneless organelle ribonucleoprotein granule membraneless organelle supramolecular complex cytoplasmic stress granule cytosol cytosolic small ribosomal subunit protein-containing complex small ribosomal subunit ribosomal subunit cytosolic ribosome ribonucleoprotein complex ribosome translation preinitiation complex eukaryotic 48S preinitiation complex

InterPro: Protein Family Classification InterPro Database Homepage

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