Annotations: 5YWZ

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Sad1_UNC	e5ywzA2	A: beta sandwiches	X: jelly-roll	H: Concanavalin A-like	T: Galactose-binding domain-like	F: Sad1_UNC	ECOD (1.6)
A	EUF07923	e5ywzA1	A: alpha arrays	X: HTH	H: CC2 domain in SUN proteins (From Topology)	T: CC2 domain in SUN proteins	F: EUF07923	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF18580	SUN2 helix-turn-helix domain (HTH_SUN2)	SUN2 helix-turn-helix domain	LINC complexes are formed by coupling of KASH (Klarsicht, ANC-1, and Syne/Nesprin Homology) and SUN (Sad1 and UNC-84) proteins from the inner and outer nuclear membranes (INM and ONM, respectively). the formation of LINC complexes by KASH and SUN pro ...	LINC complexes are formed by coupling of KASH (Klarsicht, ANC-1, and Syne/Nesprin Homology) and SUN (Sad1 and UNC-84) proteins from the inner and outer nuclear membranes (INM and ONM, respectively). the formation of LINC complexes by KASH and SUN proteins at the nuclear envelope (NE) establishes the physical linkage between the cytoskeleton and nuclear lamina, which is instrumental for the mechanical force transmission from the cytoplasm to the nuclear interior, and is essential for cellular processes such as nuclear positioning and migration, centrosome-nucleus anchorage, and chromosome dynamics. This entry represents an HTH domain found in SUN2 that forms a three-helix bundle to lock the SUN domain in an inactive conformation acting as an inhibitory component.	Domain
A	PF07738	Sad1 / UNC-like C-terminal (Sad1_UNC)	Sad1 / UNC-like C-terminal	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	SUN domain-containing protein 1	cytoskeleton-nuclear membrane anchor activity protein-membrane adaptor activity protein-macromolecule adaptor activity molecular adaptor activity lamin binding protein binding binding identical protein binding	maintenance of protein location protein localization cellular localization nuclear matrix anchoring at nuclear membrane maintenance of protein location in nucleus protein localization to nucleus maintenance of location maintenance of location in cell cellular component organization localization nucleus organization organelle organization nuclear matrix organization maintenance of protein location in cell cellular macromolecule localization maintenance of protein location protein localization cellular localization nuclear matrix anchoring at nuclear membrane maintenance of protein location in nucleus protein localization to nucleus maintenance of location maintenance of location in cell cellular component organization localization nucleus organization organelle organization nuclear matrix organization maintenance of protein location in cell cellular macromolecule localization macromolecule localization protein localization to organelle cellular process cellular component organization or biogenesis maintenance of protein localization in organelle developmental process spermatogenesis sexual reproduction reproductive process multicellular organismal reproductive process developmental process involved in reproduction male gamete generation gamete generation membrane organization nuclear envelope organization endomembrane system organization centrosome localization microtubule organizing center localization meiotic chromosome segregation meiotic cell cycle organelle fission chromosome organization meiotic cell cycle process chromosome organization involved in meiotic cell cycle nuclear division meiosis I meiosis I cell cycle process homologous chromosome pairing at meiosis nuclear chromosome segregation meiotic nuclear division homologous chromosome segregation cell cycle chromosome segregation cell cycle process response to stimulus response to mechanical stimulus response to abiotic stimulus response to external stimulus establishment of organelle localization multicellular organismal process organelle transport along microtubule microtubule cytoskeleton organization telencephalon glial cell migration multicellular organism development telencephalon cell migration gliogenesis cell differentiation establishment of localization in cell anatomical structure development cell migration transport along microtubule system development head development brain development nucleus localization nucleokinesis involved in cell motility in cerebral cortex radial glia guided migration intracellular transport nervous system development cerebral cortex radially oriented cell migration establishment of localization central nervous system development microtubule-based process cytoskeleton-dependent intracellular transport microtubule-based movement cerebral cortex radial glia-guided migration cellular developmental process transport forebrain development glial cell migration cerebral cortex development neurogenesis forebrain cell migration organelle localization nuclear migration cell motility cell motility involved in cerebral cortex radial glia guided migration cerebral cortex cell migration animal organ development modulation of microtubule cytoskeleton involved in cerebral cortex radial glia guided migration pallium development nuclear migration along microtubule microtubule-based transport telencephalon development cytoskeleton organization ossification meiotic attachment of telomere to nuclear envelope telomere localization chromosome localization meiotic telomere clustering meiotic telomere tethering at nuclear periphery chromosome localization to nuclear envelope involved in homologous chromosome segregation telomere tethering at nuclear periphery chromosome attachment to the nuclear envelope establishment of chromosome localization	membrane cellular anatomical entity membrane-bounded organelle intracellular organelle organelle envelope intracellular anatomical structure organelle nuclear envelope nucleus intracellular membrane-bounded organelle endomembrane system nuclear membrane organelle membrane cytoplasm membrane cellular anatomical entity membrane-bounded organelle intracellular organelle organelle envelope intracellular anatomical structure organelle nuclear envelope nucleus intracellular membrane-bounded organelle endomembrane system nuclear membrane organelle membrane cytoplasm protein-containing complex membrane protein complex nuclear protein-containing complex nuclear membrane protein complex microtubule organizing center attachment site nuclear membrane microtubule tethering complex meiotic nuclear membrane microtubule tethering complex acrosomal vesicle intracellular vesicle acrosomal membrane outer acrosomal membrane cytoplasmic vesicle membrane bounding membrane of organelle vesicle membrane cytoplasmic vesicle secretory granule secretory vesicle vesicle secretory granule membrane organelle inner membrane nuclear inner membrane intracellular non-membrane-bounded organelle chromosome chromosome, telomeric region chromosomal region non-membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR012919	SUN domain	Domain
A	IPR045119	SUN domain-containing protein 1-5	Family
A	IPR040994	SUN coiled coil domain 2	Domain
A	IPR032680	SUN domain-containing protein 1, N-terminal	Domain

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.