Annotations: 1IBR

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B	d1ibrb_	All alpha proteins	alpha-alpha superhelix	ARM repeat	Armadillo repeat	Importin beta	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
D	d1ibrd_	All alpha proteins	alpha-alpha superhelix	ARM repeat	Armadillo repeat	Importin beta	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d1ibra_	Alpha and beta proteins (a/b)	P-loop containing nucleoside triphosphate hydrolases	P-loop containing nucleoside triphosphate hydrolases	G proteins	Ran	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
C	d1ibrc_	Alpha and beta proteins (a/b)	P-loop containing nucleoside triphosphate hydrolases	P-loop containing nucleoside triphosphate hydrolases	G proteins	Ran	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Ras-like monodomain GTPases	8057411	4004043	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Ras-like P-loop GTPases	8057412	3002022	SCOP2 (2022-06-29)
C	SCOP2B Superfamily	Ras-like P-loop GTPases	8057412	3002022	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)
B	IBN_N	e1ibrB1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: IBN_N	ECOD (1.6)
D	IBN_N	e1ibrD1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: IBN_N	ECOD (1.6)
A	Ras	e1ibrA1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: Ras	ECOD (1.6)
C	Ras	e1ibrC1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: Ras	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	1.25.10.10	Mainly Alpha	Alpha Horseshoe	Leucine-rich Repeat Variant	Leucine-rich Repeat Variant	CATH (4.3.0)
D	1.25.10.10	Mainly Alpha	Alpha Horseshoe	Leucine-rich Repeat Variant	Leucine-rich Repeat Variant	CATH (4.3.0)
A	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)
C	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B, D	PF00514	Armadillo/beta-catenin-like repeat (Arm)	Armadillo/beta-catenin-like repeat	-	Repeat
B, D	PF03810	Importin-beta N-terminal domain (IBN_N)	Importin-beta N-terminal domain	-	Repeat
A, C	PF00071	Ras family (Ras)	Ras family	Includes sub-families Ras, Rab, Rac, Ral, Ran, Rap Ypt1 and more. Shares P-loop motif with GTP_EFTU, arf and myosin_head. See Pfam:PF00009 Pfam:PF00025, Pfam:PF00063. As regards Rab GTPases, these are important regulators of vesicle formation, motil ...	Includes sub-families Ras, Rab, Rac, Ral, Ran, Rap Ypt1 and more. Shares P-loop motif with GTP_EFTU, arf and myosin_head. See Pfam:PF00009 Pfam:PF00025, Pfam:PF00063. As regards Rab GTPases, these are important regulators of vesicle formation, motility and fusion. They share a fold in common with all Ras GTPases: this is a six-stranded beta-sheet surrounded by five alpha-helices [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B, D	Importin beta-1 subunit	small GTPase binding protein binding binding enzyme binding GTPase binding protein domain specific binding Hsp90 protein binding heat shock protein binding RNA binding organic cyclic compound binding nucleic acid binding nuclear localization sequence binding signal sequence binding peptide binding small GTPase binding protein binding binding enzyme binding GTPase binding protein domain specific binding Hsp90 protein binding heat shock protein binding RNA binding organic cyclic compound binding nucleic acid binding nuclear localization sequence binding signal sequence binding peptide binding nuclear import signal receptor activity nucleocytoplasmic carrier activity molecular carrier activity importin-alpha family protein binding cation binding transition metal ion binding zinc ion binding ion binding metal ion binding small molecule binding	cellular localization RNA import into nucleus RNA transport nitrogen compound transport nucleocytoplasmic transport transport nuclear transport organic substance transport nucleic acid transport intracellular transport establishment of localization localization import into nucleus establishment of RNA localization establishment of localization in cell cellular localization RNA import into nucleus RNA transport nitrogen compound transport nucleocytoplasmic transport transport nuclear transport organic substance transport nucleic acid transport intracellular transport establishment of localization localization import into nucleus establishment of RNA localization establishment of localization in cell macromolecule localization cellular process RNA localization nucleobase-containing compound transport mitotic cell cycle cellular component organization mitotic chromosome movement towards spindle pole chromosome localization organelle localization mitotic sister chromatid segregation cell cycle cellular component organization or biogenesis chromosome segregation chromosome movement towards spindle pole cell cycle process mitotic nuclear division organelle fission chromosome organization sister chromatid segregation organelle organization nuclear division mitotic cell cycle process nuclear chromosome segregation microtubule-based movement microtubule-based process establishment of organelle localization mitotic metaphase chromosome alignment metaphase chromosome alignment establishment of chromosome localization microtubule cytoskeleton organization spindle localization establishment of mitotic spindle localization establishment of spindle localization microtubule cytoskeleton organization involved in mitosis cytoskeleton organization protein localization establishment of protein localization protein localization to nucleus establishment of protein localization to organelle protein transport cellular macromolecule localization protein localization to organelle protein import into nucleus intracellular protein transport astral microtubule organization cytoplasmic microtubule organization supramolecular fiber organization spindle organization NLS-bearing protein import into nucleus non-membrane-bounded organelle assembly cellular component biogenesis cellular component assembly organelle assembly spindle assembly mitotic spindle organization mitotic spindle assembly ribosomal protein import into nucleus	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 nucleocytoplasmic transport complex NLS-dependent protein nuclear import 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 nucleocytoplasmic transport complex NLS-dependent protein nuclear import complex membrane membrane-bounded organelle organelle envelope nuclear envelope nucleus intracellular membrane-bounded organelle endomembrane system nuclear membrane organelle membrane extracellular exosome extracellular vesicle extracellular organelle extracellular region extracellular space vesicle extracellular membrane-bounded organelle cytosol nuclear protein-containing complex nuclear pore membrane-enclosed lumen intracellular vesicle ficolin-1-rich granule intracellular organelle lumen organelle lumen cytoplasmic vesicle ficolin-1-rich granule lumen secretory granule secretory vesicle nucleoplasm nuclear lumen organelle subcompartment endoplasmic reticulum subcompartment endoplasmic reticulum endoplasmic reticulum tubular network vesicle lumen cytoplasmic vesicle lumen secretory granule lumen specific granule lumen specific granule
A, C	GTP-binding nuclear protein RAN	cell adhesion molecule binding cadherin binding protein binding binding dynein intermediate chain 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 protein domain specific binding protein-containing complex binding cell adhesion molecule binding cadherin binding protein binding binding dynein intermediate chain 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 protein domain specific binding protein-containing complex binding chromatin binding protein heterodimerization activity protein dimerization activity RNA binding organic cyclic compound binding nucleic acid 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 cation binding magnesium ion binding metal ion binding GDP binding G protein activity molecular function regulator activity importin-alpha family protein binding	protein localization cellular localization establishment of protein localization nitrogen compound transport nucleocytoplasmic transport transport nuclear transport organic substance transport intracellular transport protein export from nucleus establishment of localization localization protein transport establishment of localization in cell cellular macromolecule localization protein localization cellular localization establishment of protein localization nitrogen compound transport nucleocytoplasmic transport transport nuclear transport organic substance transport intracellular transport protein export from nucleus establishment of localization localization protein transport establishment of localization in cell cellular macromolecule localization macromolecule localization cellular process nuclear export intracellular protein transport viral process cell division protein localization to nucleus import into nucleus establishment of protein localization to organelle protein localization to organelle protein import into nucleus cellular component organization organelle organization actin cytoskeleton organization actin filament-based process cellular component organization or biogenesis cytoskeleton organization regulation of localization regulation of cellular process positive regulation of establishment of protein localization regulation of intracellular transport regulation of biological process positive regulation of protein localization to nucleus positive regulation of protein import into nucleus regulation of nucleocytoplasmic transport positive regulation of protein localization regulation of intracellular protein transport positive regulation of intracellular protein transport regulation of protein localization positive regulation of nucleocytoplasmic transport positive regulation of biological process regulation of protein localization to nucleus positive regulation of protein transport regulation of protein import into nucleus positive regulation of intracellular transport positive regulation of cellular process regulation of transport biological regulation regulation of establishment of protein localization regulation of protein transport positive regulation of transport regulation of cellular localization developmental process spermatid development spermatid differentiation sexual reproduction cellular developmental process spermatogenesis reproductive process multicellular organismal reproductive process cell development cellular process involved in reproduction in multicellular organism developmental process involved in reproduction gamete generation male gamete generation cell differentiation anatomical structure development germ cell development nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process metabolic process primary metabolic process DNA metabolic process macromolecule metabolic process nucleic acid metabolic process ribose phosphate metabolic process GTP metabolic process carbohydrate derivative metabolic process purine nucleotide metabolic process ribonucleotide metabolic process nucleobase-containing small molecule metabolic process purine ribonucleoside triphosphate metabolic process phosphate-containing compound metabolic process small molecule metabolic process phosphorus metabolic process ribonucleoside triphosphate metabolic process nucleoside phosphate metabolic process purine nucleoside triphosphate metabolic process organonitrogen compound metabolic process cellular metabolic process nucleotide metabolic process purine-containing compound metabolic process organophosphate metabolic process nucleoside triphosphate metabolic process purine ribonucleotide metabolic process regulation of protein binding positive regulation of molecular function regulation of molecular function positive regulation of protein binding regulation of binding positive regulation of binding cellular response to stimulus response to organic substance cellular response to mineralocorticoid stimulus response to stimulus response to lipid response to endogenous stimulus cellular response to organic cyclic compound response to mineralocorticoid cellular response to corticosteroid stimulus cellular response to endogenous stimulus response to corticosteroid cellular response to chemical stimulus response to hormone response to chemical response to steroid hormone cellular response to lipid cellular response to organic substance cellular response to steroid hormone stimulus response to organic cyclic compound cellular response to hormone stimulus cell cycle mitotic cell cycle multicellular organismal process head development forebrain development animal organ development brain development nervous system development pallium development multicellular organism development central nervous system development telencephalon development hippocampus development limbic system development system development negative regulation of biological process negative regulation of cellular metabolic process post-transcriptional regulation of gene expression organic substance biosynthetic process RNA localization RNA transport negative regulation of metabolic process pre-miRNA export from nucleus regulation of cellular metabolic process negative regulation of cellular biosynthetic process RNA export from nucleus miRNA-mediated post-transcriptional gene silencing regulation of gene expression negative regulation of gene expression biosynthetic process negative regulation of macromolecule biosynthetic process post-transcriptional gene silencing regulation of macromolecule biosynthetic process regulation of metabolic process cellular biosynthetic process negative regulation of cellular process nucleobase-containing compound transport negative regulation of macromolecule metabolic process regulation of biosynthetic process nucleic acid transport regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process regulatory ncRNA-mediated post-transcriptional gene silencing regulatory ncRNA-mediated gene silencing regulation of cellular biosynthetic process establishment of RNA localization negative regulation of biosynthetic process establishment of organelle localization ribonucleoprotein complex biogenesis ribosomal subunit export from nucleus protein-containing complex localization cellular component biogenesis ribosome biogenesis ribosomal small subunit export from nucleus organelle localization ribosome localization ribosomal large subunit export from nucleus mitotic nuclear division organelle fission chromosome organization sister chromatid segregation nuclear division mitotic cell cycle process mitotic sister chromatid segregation nuclear chromosome segregation chromosome segregation cell cycle process protein localization to nucleolus microtubule cytoskeleton organization mitotic spindle organization microtubule-based process microtubule cytoskeleton organization involved in mitosis spindle organization RNA import into nucleus snRNA import into nucleus snRNA transport	membrane cellular anatomical entity protein-containing complex nucleocytoplasmic transport complex RNA nuclear export complex membrane-bounded organelle intracellular organelle organelle envelope intracellular anatomical structure organelle nuclear envelope nucleus intracellular membrane-bounded organelle endomembrane system membrane cellular anatomical entity protein-containing complex nucleocytoplasmic transport complex RNA nuclear export complex membrane-bounded organelle intracellular organelle organelle envelope intracellular anatomical structure organelle nuclear envelope nucleus intracellular membrane-bounded organelle endomembrane system extracellular exosome extracellular vesicle extracellular organelle extracellular region extracellular space vesicle extracellular membrane-bounded organelle cytoplasm cytosol cell projection cilium 9+2 motile cilium sperm flagellum motile cilium plasma membrane bounded cell projection nuclear protein-containing complex nuclear pore protein-DNA complex intracellular non-membrane-bounded organelle chromatin chromosome non-membrane-bounded organelle endosome intracellular vesicle recycling endosome cytoplasmic vesicle male germ cell nucleus germ cell nucleus midbody membrane-enclosed lumen nucleolus intracellular organelle lumen organelle lumen nuclear lumen pigment granule melanosome microtubule organizing center cytoskeleton centriole microtubule cytoskeleton nucleoplasm manchette

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B, D	IPR016024	Armadillo-type fold	Homologous Superfamily
B, D	IPR021133	HEAT, type 2	Repeat
B, D	IPR000225	Armadillo	Repeat
B, D	IPR001494	Importin-beta, N-terminal domain	Domain
B, D	IPR011989	Armadillo-like helical	Homologous Superfamily
B, D	IPR040122	Importin beta family	Family
A, C	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
A, C	IPR002041	Ran GTPase	Family
A, C	IPR001806	Small GTPase	Family
A, C	IPR005225	Small GTP-binding protein domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
B, D	Pharos: Q14974	HIV infectious disease subependymal giant cell astrocytoma astrocytic tumor dental caries Hashimoto thyroiditis large cell medulloblastoma lymphoplasmacytic lymphoma osteosarcoma Pick disease atypical teratoid rhabdoid tumor dermatomyositis HIV Coinfection lung adenocarcinoma malignant glioma ovarian cancer HIV infectious disease subependymal giant cell astrocytoma astrocytic tumor dental caries Hashimoto thyroiditis large cell medulloblastoma lymphoplasmacytic lymphoma osteosarcoma Pick disease atypical teratoid rhabdoid tumor dermatomyositis HIV Coinfection lung adenocarcinoma malignant glioma ovarian cancer psoriasis glioblastoma lung cancer medulloblastoma pancreatic ductal adenocarcinoma
A, C	Pharos: P62826	keloid carcinoma HIV infectious disease Mammary Neoplasms, Experimental sarcomatoid carcinoma pemphigus undifferentiated carcinoma acute myeloid leukemia mammary neoplasms, animal nasopharyngeal carcinoma plasma cell myeloma amyotrophic lateral sclerosis lymphoplasmacytic lymphoma osteoarthritis ovarian cancer keloid carcinoma HIV infectious disease Mammary Neoplasms, Experimental sarcomatoid carcinoma pemphigus undifferentiated carcinoma acute myeloid leukemia mammary neoplasms, animal nasopharyngeal carcinoma plasma cell myeloma amyotrophic lateral sclerosis lymphoplasmacytic lymphoma osteoarthritis ovarian cancer invasive ductal breast carcinoma myopathy osteoarthritis susceptibility 1

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.