Annotations: 4PL3

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Ire1-RNaseL RNase domain-like	8048287	4006039	SCOP2 (2022-06-29)
A	SCOP2 Family	Protein kinases catalytic domain-like	8089773	4003661	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Ire1-RNaseL RNase domain-like	8089772	3002392	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Protein kinase-like (PK-like)	8089774	3000066	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Ire1-RNaseL RNase domain-like	8089772	3002392	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Protein kinase-like (PK-like)	8089774	3000066	SCOP2B (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	Ribonuc_2-5A	e4pl3A2	A: alpha bundles	X: Four-helical up-and-down bundle	H: HEPN	T: Nucleotidyltransferase substrate binding subunit/domain	F: Ribonuc_2-5A	ECOD (1.6)
A	Pkinase_Tyr	e4pl3A1	A: a+b complex topology	X: Protein kinase/SAICAR synthase/ATP-grasp (From Homology)	H: Protein kinase/SAICAR synthase/ATP-grasp	T: Protein kinase	F: Pkinase_Tyr	ECOD (1.6)
B	Ribonuc_2-5A	e4pl3B2	A: alpha bundles	X: Four-helical up-and-down bundle	H: HEPN	T: Nucleotidyltransferase substrate binding subunit/domain	F: Ribonuc_2-5A	ECOD (1.6)
B	Pkinase_Tyr	e4pl3B1	A: a+b complex topology	X: Protein kinase/SAICAR synthase/ATP-grasp (From Homology)	H: Protein kinase/SAICAR synthase/ATP-grasp	T: Protein kinase	F: Pkinase_Tyr	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.200.20	Alpha Beta	2-Layer Sandwich	Phosphorylase Kinase	domain 1	CATH (4.3.0)
A	1.10.510.10	Mainly Alpha	Orthogonal Bundle	Transferase(Phosphotransferase)	domain 1	CATH (4.3.0)
A	1.20.1440.180	Mainly Alpha	Up-down Bundle	de novo design (two linked rop proteins)	KEN domain	CATH (4.3.0)
B	3.30.200.20	Alpha Beta	2-Layer Sandwich	Phosphorylase Kinase	domain 1	CATH (4.3.0)
B	1.10.510.10	Mainly Alpha	Orthogonal Bundle	Transferase(Phosphotransferase)	domain 1	CATH (4.3.0)
B	1.20.1440.180	Mainly Alpha	Up-down Bundle	de novo design (two linked rop proteins)	KEN domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF06479	Ribonuclease 2-5A (Ribonuc_2-5A)	Ribonuclease 2-5A	-	Family
A, B	PF00069	Protein kinase domain (Pkinase)	Protein kinase domain	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Serine/threonine-protein kinase/endoribonuclease IRE1	Hsp90 protein binding protein binding binding heat shock protein binding signaling receptor binding platelet-derived growth factor receptor binding growth factor receptor binding Hsp70 protein binding protein-folding chaperone binding catalytic activity, acting on a protein kinase activity protein kinase activity transferase activity catalytic activity Hsp90 protein binding protein binding binding heat shock protein binding signaling receptor binding platelet-derived growth factor receptor binding growth factor receptor binding Hsp70 protein binding protein-folding chaperone binding catalytic activity, acting on a protein kinase activity protein kinase activity transferase activity catalytic activity protein serine kinase activity phosphotransferase activity, alcohol group as acceptor transferase activity, transferring phosphorus-containing groups cation binding magnesium ion binding ion binding metal ion binding small molecule binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding ADP binding unfolded protein binding identical protein binding protein homodimerization activity protein dimerization activity protein serine/threonine kinase activity endonuclease activity nuclease activity hydrolase activity, acting on ester bonds catalytic activity, acting on RNA RNA endonuclease activity catalytic activity, acting on a nucleic acid RNA nuclease activity hydrolase activity enzyme binding	cell population proliferation endothelial cell proliferation cellular process epithelial cell proliferation regulation of cellular process cellular biosynthetic process negative regulation of biological process negative regulation of cellular metabolic process regulation of primary metabolic process post-transcriptional regulation of gene expression negative regulation of translation negative regulation of cellular process protein metabolic process negative regulation of protein metabolic process cell population proliferation endothelial cell proliferation cellular process epithelial cell proliferation regulation of cellular process cellular biosynthetic process negative regulation of biological process negative regulation of cellular metabolic process regulation of primary metabolic process post-transcriptional regulation of gene expression negative regulation of translation negative regulation of cellular process protein metabolic process negative regulation of protein metabolic process negative regulation of macromolecule metabolic process regulation of biosynthetic process regulation of biological process cellular metabolic process regulation of protein metabolic process negative regulation of metabolic process biological regulation regulation of cellular metabolic process primary metabolic process regulation of macromolecule metabolic process gene expression translation macromolecule biosynthetic process negative regulation of cellular biosynthetic process regulation of cellular biosynthetic process regulation of gene expression negative regulation of gene expression biosynthetic process negative regulation of biosynthetic process regulation of translation negative regulation of macromolecule biosynthetic process regulation of macromolecule biosynthetic process metabolic process macromolecule metabolic process regulation of metabolic process insulin metabolic process cellular response to stimulus response to stimulus homeostatic process response to oxygen-containing compound cellular response to glucose stimulus intracellular glucose homeostasis cellular response to oxygen-containing compound response to hexose cellular response to carbohydrate stimulus cellular response to chemical stimulus cellular homeostasis response to monosaccharide response to carbohydrate chemical homeostasis response to glucose response to chemical glucose homeostasis carbohydrate homeostasis cellular response to hexose stimulus intracellular chemical homeostasis cellular response to monosaccharide stimulus cellular response to topologically incorrect protein signaling endoplasmic reticulum unfolded protein response cellular response to unfolded protein response to unfolded protein intracellular signal transduction cell communication cellular response to stress response to stress response to topologically incorrect protein IRE1-mediated unfolded protein response signal transduction response to endoplasmic reticulum stress regulation of vascular associated smooth muscle cell proliferation positive regulation of vascular associated smooth muscle cell proliferation regulation of smooth muscle cell proliferation positive regulation of cell population proliferation positive regulation of biological process smooth muscle cell proliferation positive regulation of smooth muscle cell proliferation regulation of cell population proliferation muscle cell proliferation vascular associated smooth muscle cell proliferation positive regulation of cellular process protein phosphorylation protein autophosphorylation phosphorylation macromolecule modification phosphate-containing compound metabolic process protein modification process phosphorus metabolic process cellular response to oxidative stress cellular response to chemical stress cellular response to hydrogen peroxide response to reactive oxygen species response to hydrogen peroxide response to oxidative stress cellular response to reactive oxygen species RNA metabolic process positive regulation of cellular metabolic process positive regulation of macromolecule biosynthetic process RNA biosynthetic process nucleobase-containing compound metabolic process nucleic acid biosynthetic process positive regulation of metabolic process positive regulation of biosynthetic process positive regulation of macromolecule metabolic process RNA processing RNA splicing nucleobase-containing compound biosynthetic process regulation of RNA splicing nucleic acid metabolic process positive regulation of gene expression positive regulation of RNA splicing positive regulation of cellular biosynthetic process intrinsic apoptotic signaling pathway in response to endoplasmic reticulum stress cell death apoptotic signaling pathway apoptotic process intrinsic apoptotic signaling pathway programmed cell death mRNA processing mRNA metabolic process mRNA splicing, via endonucleolytic cleavage and ligation RNA splicing, via endonucleolytic cleavage and ligation positive regulation of cell communication positive regulation of signal transduction positive regulation of phosphorylation regulation of catalytic activity regulation of signal transduction regulation of transferase activity positive regulation of phosphate metabolic process regulation of MAP kinase activity positive regulation of protein serine/threonine kinase activity regulation of phosphate metabolic process intracellular signaling cassette positive regulation of protein phosphorylation positive regulation of MAP kinase activity positive regulation of phosphorus metabolic process positive regulation of MAPK cascade positive regulation of intracellular signal transduction positive regulation of JUN kinase activity regulation of MAPK cascade regulation of molecular function positive regulation of kinase activity regulation of kinase activity regulation of response to stimulus regulation of protein serine/threonine kinase activity regulation of phosphorus metabolic process regulation of protein modification process regulation of protein phosphorylation positive regulation of protein metabolic process positive regulation of response to stimulus positive regulation of molecular function positive regulation of protein modification process regulation of intracellular signal transduction positive regulation of protein kinase activity regulation of signaling positive regulation of transferase activity positive regulation of catalytic activity regulation of protein kinase activity regulation of JUN kinase activity MAPK cascade regulation of cell communication regulation of phosphorylation positive regulation of signaling cellular response to endogenous stimulus cellular response to growth factor stimulus response to endogenous stimulus cellular response to vascular endothelial growth factor stimulus response to growth factor regulation of cellular response to stress regulation of response to endoplasmic reticulum stress regulation of endoplasmic reticulum unfolded protein response positive regulation of response to endoplasmic reticulum stress regulation of response to stress positive regulation of endoplasmic reticulum unfolded protein response positive regulation of proteasomal protein catabolic process ERAD pathway regulation of proteolysis proteolysis regulation of ERAD pathway response to nitrogen compound positive regulation of protein catabolic process positive regulation of proteolysis regulation of proteasomal protein catabolic process positive regulation of ERAD pathway catabolic process proteolysis involved in protein catabolic process macromolecule catabolic process regulation of proteolysis involved in protein catabolic process proteasomal protein catabolic process protein catabolic process regulation of catabolic process positive regulation of proteolysis involved in protein catabolic process positive regulation of catabolic process regulation of protein catabolic process	membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle protein-containing complex organelle subcompartment membrane membrane protein complex endomembrane system endoplasmic reticulum subcompartment membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle protein-containing complex organelle subcompartment membrane membrane protein complex endomembrane system endoplasmic reticulum subcompartment IRE1-TRAF2-ASK1 complex nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum organelle membrane endoplasmic reticulum protein-containing complex endoplasmic reticulum membrane AIP1-IRE1 complex IRE1-RACK1-PP2A complex organelle inner membrane nuclear membrane nucleus organelle envelope nuclear inner membrane nuclear envelope

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR018391	Pyrrolo-quinoline quinone beta-propeller repeat	Repeat
A, B	IPR038357	KEN domain superfamily	Homologous Superfamily
A, B	IPR045133	Serine/threonine-protein kinase/endoribonuclease IRE1/2-like	Family
A, B	IPR011047	Quinoprotein alcohol dehydrogenase-like superfamily	Homologous Superfamily
A, B	IPR000719	Protein kinase domain	Domain
A, B	IPR015943	WD40/YVTN repeat-like-containing domain superfamily	Homologous Superfamily
A, B	IPR010513	KEN domain	Domain
A, B	IPR011009	Protein kinase-like domain superfamily	Homologous Superfamily
A, B	IPR008271	Serine/threonine-protein kinase, active site	Active Site

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.