5A5U

Structure of mammalian eIF3 in the context of the 43S preinitiation complex

External Resource: Annotation

Domain Annotation: ECOD Classification
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)
C [auth I]	ANAPC4_WD40_1	e5a5uI1	A: beta duplicates or obligate multimers	X: beta-propeller-like	H: beta-propeller	T: 7-bladed	F: ANAPC4_WD40_1	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B	PF08662	Eukaryotic translation initiation factor eIF2A (eIF2A)	Eukaryotic translation initiation factor eIF2A	-	Repeat
B	PF00076	RNA recognition motif (RRM_1)	RNA recognition motif	The RRM motif (a.k.a. RRM, RBD, or RNP domain) is probably diagnostic of an RNA binding protein. RRMs are found in a variety of RNA binding proteins, including various hnRNP proteins, proteins implicated in regulation of alternative splicing, and pro ...	The RRM motif (a.k.a. RRM, RBD, or RNP domain) is probably diagnostic of an RNA binding protein. RRMs are found in a variety of RNA binding proteins, including various hnRNP proteins, proteins implicated in regulation of alternative splicing, and protein components of snRNPs. The motif also appears in a few single stranded DNA binding proteins. The RRM structure consists of four strands and two helices arranged in an alpha/beta sandwich, with a third helix present during RNA binding in some cases The C-terminal beta strand (4th strand) and final helix are hard to align and have been omitted in the SEED alignment The LA proteins (Swiss:P05455) have an N terminal rrm which is included in the seed. There is a second region towards the C terminus that has some features characteristic of a rrm but does not appear to have the important structural core of a rrm. The LA proteins (Swiss:P05455) are one of the main autoantigens in Systemic lupus erythematosus (SLE), an autoimmune disease.	Domain
C [auth I]	PF00400	WD domain, G-beta repeat (WD40)	WD domain, G-beta repeat	-	Repeat

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	EUKARYOTIC INITIATION FACTOR 3	-	-	-
B	EUKARYOTIC TRANSLATION INITIATION FACTOR 3 SUBUNIT B	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 protein binding translation initiation factor binding RNA binding	regulation of cellular process cellular biosynthetic process regulation of primary metabolic process post-transcriptional regulation of gene expression translational initiation protein metabolic process regulation of biosynthetic process regulation of biological process regulation of translational initiation cellular metabolic process regulation of protein metabolic process biological regulation regulation of cellular metabolic process primary metabolic process regulation of cellular process cellular biosynthetic process regulation of primary metabolic process post-transcriptional regulation of gene expression translational initiation protein metabolic process regulation of biosynthetic process regulation of biological process regulation of translational initiation cellular metabolic process regulation of protein metabolic process biological regulation regulation of cellular metabolic process primary metabolic process regulation of macromolecule metabolic process gene expression translation macromolecule biosynthetic process regulation of cellular biosynthetic process regulation of gene expression biosynthetic process regulation of translation regulation of macromolecule biosynthetic process metabolic process cellular process macromolecule metabolic process regulation of metabolic process viral gene expression viral process viral translation IRES-dependent viral translational initiation viral translational termination-reinitiation ribonucleoprotein complex biogenesis protein-RNA complex assembly cellular component organization cellular component biogenesis protein-RNA complex organization cellular component assembly protein-containing complex assembly cellular component organization or biogenesis protein-containing complex organization formation of cytoplasmic translation initiation complex cytoplasmic translation cytoplasmic translational initiation	intracellular anatomical structure cytoplasmic ribonucleoprotein granule cellular anatomical entity ribonucleoprotein granule intracellular organelle organelle intracellular non-membrane-bounded organelle cytoplasm supramolecular complex non-membrane-bounded organelle cytoplasmic stress granule protein-containing complex translation preinitiation complex eukaryotic 43S preinitiation complex intracellular anatomical structure cytoplasmic ribonucleoprotein granule cellular anatomical entity ribonucleoprotein granule intracellular organelle organelle intracellular non-membrane-bounded organelle cytoplasm supramolecular complex non-membrane-bounded organelle cytoplasmic stress granule protein-containing complex translation preinitiation complex eukaryotic 43S preinitiation complex ribonucleoprotein complex eukaryotic translation initiation factor 3 complex eukaryotic 48S preinitiation complex
C [auth I]	EUKARYOTIC TRANSLATION INITIATION FACTOR 3 SUBUNIT I	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 RNA binding	cellular biosynthetic process cellular metabolic process primary metabolic process translation gene expression macromolecule biosynthetic process biosynthetic process translational initiation metabolic process cellular process protein metabolic process macromolecule metabolic process translation reinitiation cytoplasmic translation cellular biosynthetic process cellular metabolic process primary metabolic process translation gene expression macromolecule biosynthetic process biosynthetic process translational initiation metabolic process cellular process protein metabolic process macromolecule metabolic process translation reinitiation cytoplasmic translation cytoplasmic translational initiation ribonucleoprotein complex biogenesis protein-RNA complex assembly cellular component organization cellular component biogenesis protein-RNA complex organization cellular component assembly protein-containing complex assembly cellular component organization or biogenesis protein-containing complex organization formation of cytoplasmic translation initiation complex	intracellular anatomical structure cytoplasmic ribonucleoprotein granule cellular anatomical entity ribonucleoprotein granule intracellular organelle organelle intracellular non-membrane-bounded organelle cytoplasm supramolecular complex non-membrane-bounded organelle cytoplasmic stress granule protein-containing complex translation preinitiation complex eukaryotic 43S preinitiation complex intracellular anatomical structure cytoplasmic ribonucleoprotein granule cellular anatomical entity ribonucleoprotein granule intracellular organelle organelle intracellular non-membrane-bounded organelle cytoplasm supramolecular complex non-membrane-bounded organelle cytoplasmic stress granule protein-containing complex translation preinitiation complex eukaryotic 43S preinitiation complex ribonucleoprotein complex multi-eIF complex eukaryotic translation initiation factor 3 complex eukaryotic 48S preinitiation complex eukaryotic translation initiation factor 3 complex, eIF3m

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B	IPR011042	Six-bladed beta-propeller, TolB-like	Homologous Superfamily
B	IPR013979	Translation initiation factor, beta propellor-like domain	Domain
B	IPR034363	eIF3B, RNA recognition motif	Domain
B	IPR000504	RNA recognition motif domain	Domain
B	IPR012677	Nucleotide-binding alpha-beta plait domain superfamily	Homologous Superfamily
B	IPR011400	Eukaryotic translation initiation factor 3 subunit B	Family
B	IPR035979	RNA-binding domain superfamily	Homologous Superfamily
B	IPR015943	WD40/YVTN repeat-like-containing domain superfamily	Homologous Superfamily
C [auth I]	IPR027525	Eukaryotic translation initiation factor 3 subunit I	Family
C [auth I]	IPR019775	WD40 repeat, conserved site	Conserved Site
C [auth I]	IPR036322	WD40-repeat-containing domain superfamily	Homologous Superfamily
C [auth I]	IPR001680	WD40 repeat	Repeat
C [auth I]	IPR015943	WD40/YVTN repeat-like-containing domain 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.