Annotations: 2QNA

Crystal structure of human Importin-beta (127-876) in complex with the IBB-domain of Snurportin1 (1-65)

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	ARM repeat-like	8038528	3000116	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	YadA_stalk	e2qnaB01	A: alpha arrays	X: Colicin-A N-terminal domain	H: Colicin-A N-terminal domain	T: Colicin-A N-terminal domain	F: YadA_stalk	ECOD (v295)
A	Suf	e2qnaA2	A: alpha arrays	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F: Suf	ECOD (v295)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.25.10.10	Mainly Alpha	Alpha Horseshoe	Leucine-rich Repeat Variant	Leucine-rich Repeat Variant	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00514	Armadillo/beta-catenin-like repeat (Arm)	Armadillo/beta-catenin-like repeat	-	Repeat
A	PF25574	Importin subunit beta-1-like, TPR repeats (TPR_IMB1)	Importin subunit beta-1-like, TPR repeats	-	Repeat

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	Snurportin-1	nuclear import signal receptor activity nucleocytoplasmic carrier activity molecular carrier activity RNA binding binding nucleic acid binding RNA cap binding	cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein complex oligomerization protein-containing complex assembly cellular process cellular component organization or biogenesis cellular localization RNA import into nucleus RNA transport nitrogen compound transport nucleocytoplasmic transport transport cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein complex oligomerization protein-containing complex assembly cellular process cellular component organization or biogenesis cellular localization RNA import into nucleus RNA transport nitrogen compound transport nucleocytoplasmic transport transport nuclear transport nucleic acid transport intracellular transport establishment of localization localization intercellular transport import into nucleus establishment of RNA localization macromolecule localization establishment of localization in cell RNA localization nucleobase-containing compound transport organelle organization cytoskeleton organization protein tetramerization snRNA import into nucleus snRNA transport establishment of protein localization protein localization to nucleus establishment of protein localization to organelle protein transport protein localization to organelle protein import into nucleus intracellular protein localization intracellular protein transport	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol membrane-bounded organelle protein-containing complex nucleus nuclear protein-containing complex intracellular membrane-bounded organelle endomembrane system intracellular organelle organelle envelope organelle nuclear envelope cellular anatomical structure intracellular anatomical structure cytoplasm cytosol membrane-bounded organelle protein-containing complex nucleus nuclear protein-containing complex intracellular membrane-bounded organelle endomembrane system intracellular organelle organelle envelope organelle nuclear envelope nuclear pore membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen
A	Importin subunit beta-1	small GTPase binding protein binding binding enzyme binding GTPase binding protein domain specific binding Hsp90 protein binding heat shock protein binding RNA binding nucleic acid binding nuclear localization sequence binding signal sequence receptor activity nuclear import signal receptor activity nucleocytoplasmic carrier activity small GTPase binding protein binding binding enzyme binding GTPase binding protein domain specific binding Hsp90 protein binding heat shock protein binding RNA binding nucleic acid binding nuclear localization sequence binding signal sequence receptor activity 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 nucleic acid transport intracellular transport establishment of localization localization intercellular transport import into nucleus establishment of RNA localization macromolecule localization cellular localization RNA import into nucleus RNA transport nitrogen compound transport nucleocytoplasmic transport transport nuclear transport nucleic acid transport intracellular transport establishment of localization localization intercellular transport import into nucleus establishment of RNA localization macromolecule localization establishment of localization in cell 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 mitotic metaphase chromosome alignment metaphase chromosome alignment regulation of steroid biosynthetic process regulation of cholesterol biosynthetic process regulation of cellular process regulation of cholesterol metabolic process steroid metabolic process regulation of lipid metabolic process sterol metabolic process positive regulation of biological process cholesterol metabolic process lipid biosynthetic process alcohol metabolic process regulation of primary metabolic process positive regulation of metabolic process regulation of small molecule metabolic process positive regulation of biosynthetic process positive regulation of lipid metabolic process small molecule metabolic process steroid biosynthetic process positive regulation of cellular process regulation of biosynthetic process secondary alcohol biosynthetic process regulation of biological process regulation of alcohol biosynthetic process small molecule biosynthetic process regulation of steroid metabolic process cholesterol biosynthetic process positive regulation of cholesterol biosynthetic process biological regulation primary metabolic process secondary alcohol metabolic process positive regulation of steroid biosynthetic process biosynthetic process sterol biosynthetic process positive regulation of lipid biosynthetic process regulation of sterol biosynthetic process alcohol biosynthetic process positive regulation of cholesterol metabolic process positive regulation of steroid metabolic process metabolic process regulation of lipid biosynthetic process positive regulation of small molecule metabolic process regulation of metabolic process positive regulation of alcohol biosynthetic process positive regulation of sterol biosynthetic process lipid metabolic process establishment of organelle localization microtubule cytoskeleton organization spindle localization establishment of mitotic spindle localization establishment of spindle localization microtubule cytoskeleton organization involved in mitosis cytoskeleton organization establishment of protein localization protein localization to nucleus establishment of protein localization to organelle protein transport protein localization to organelle protein import into nucleus intracellular protein localization intracellular protein transport astral microtubule organization cytoplasmic microtubule organization supramolecular fiber organization spindle organization NLS-bearing protein import into nucleus membraneless 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 intracellular membraneless organelle ribonucleoprotein granule intracellular organelle cellular anatomical structure organelle membraneless organelle cytoplasm supramolecular complex cytoplasmic stress granule membrane membrane-bounded organelle organelle envelope intracellular anatomical structure cytoplasmic ribonucleoprotein granule intracellular membraneless organelle ribonucleoprotein granule intracellular organelle cellular anatomical structure organelle membraneless organelle cytoplasm supramolecular complex cytoplasmic stress granule 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 vesicle extracellular membrane-bounded organelle cytosol protein-containing complex 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

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B	IPR002652	Importin-alpha, importin-beta-binding domain	Domain
B	IPR017336	Snurportin-1	Family
B	IPR047857	Snurportin-1, m3G cap-binding domain	Domain
B	IPR024721	Snurportin-1, N-terminal	Domain
A	IPR016024	Armadillo-type fold	Homologous Superfamily
A	IPR058584	Importin subunit beta-1/Transportin-1-like, TPR repeats	Domain
A	IPR021133	HEAT, type 2	Repeat
A	IPR000225	Armadillo	Repeat
A	IPR001494	Importin-beta, N-terminal domain	Domain
A	IPR011989	Armadillo-like helical	Homologous Superfamily
A	IPR040122	Importin beta family	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	: 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

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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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.