4U1D

Structure of the PCI domain of translation initiation factor eIF3a

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)
A [auth C]	PCI_3	e4u1dC2	A: alpha arrays	X: HTH	H: HTH	T: winged	F: PCI_3	ECOD (1.6)
A [auth C]	KOG2072	e4u1dC1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: KOG2072	ECOD (1.6)
B	PCI_3	e4u1dB2	A: alpha arrays	X: HTH	H: HTH	T: winged	F: PCI_3	ECOD (1.6)
B	KOG2072	e4u1dB1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: KOG2072	ECOD (1.6)
C [auth A]	PCI_3	e4u1dA2	A: alpha arrays	X: HTH	H: HTH	T: winged	F: PCI_3	ECOD (1.6)
C [auth A]	KOG2072	e4u1dA1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: KOG2072	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth C], B, C [auth A]	PF22591	eIF3a, PCI domain, TPR-like region (eIF3a_PCI_TPR-like)	eIF3a, PCI domain, TPR-like region	This entry represents the TPR-like region of the PCI domain of the Eukaryotic translation initiation factor 3 subunit A from Saccharomyces cerevisiae (eIF3a), the RNA-binding component of the eukaryotic translation initiation factor 3 (eIF-3) complex ...	This entry represents the TPR-like region of the PCI domain of the Eukaryotic translation initiation factor 3 subunit A from Saccharomyces cerevisiae (eIF3a), the RNA-binding component of the eukaryotic translation initiation factor 3 (eIF-3) complex, which specifically targets and initiates translation of a subset of mRNAs involved in cell proliferation. This region folds into flatly arranged helical repeats [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth C], B, C [auth A]	Eukaryotic translation initiation factor 3 subunit A	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 mRNA binding	organonitrogen compound metabolic process cellular biosynthetic process cellular metabolic process organonitrogen compound biosynthetic process primary metabolic process translation gene expression macromolecule biosynthetic process biosynthetic process translational initiation metabolic process cellular process protein metabolic process macromolecule metabolic process organonitrogen compound metabolic process cellular biosynthetic process cellular metabolic process organonitrogen compound biosynthetic 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 incipient cellular bud site site of polarized growth multi-eIF complex eukaryotic translation initiation factor 3 complex eukaryotic 48S preinitiation complex eukaryotic translation initiation factor 3 complex, eIF3e eukaryotic translation initiation factor 3 complex, eIF3m

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth C], B, C [auth A]	IPR027512	Eukaryotic translation initiation factor 3 subunit A	Family
A [auth C], B, C [auth A]	IPR000717	Proteasome component (PCI) domain	Domain

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.