Annotations: 2QK1

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	CLASP_N_1	e2qk1A1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: CLASP_N_1	ECOD (1.6)

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)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Protein STU2	cytoskeletal protein binding microtubule binding protein binding binding tubulin binding microtubule plus end polymerase catalytic activity, acting on a protein transferase activity catalytic activity microtubule plus-end binding	cellular component organization organelle organization establishment or maintenance of microtubule cytoskeleton polarity establishment or maintenance of cytoskeleton polarity microtubule cytoskeleton organization cellular process microtubule-based process cellular component organization or biogenesis establishment or maintenance of cell polarity cytoskeleton organization establishment of organelle localization cellular localization mitotic metaphase chromosome alignment mitotic cell cycle cellular component organization organelle organization establishment or maintenance of microtubule cytoskeleton polarity establishment or maintenance of cytoskeleton polarity microtubule cytoskeleton organization cellular process microtubule-based process cellular component organization or biogenesis establishment or maintenance of cell polarity cytoskeleton organization establishment of organelle localization cellular localization mitotic metaphase chromosome alignment mitotic cell cycle metaphase chromosome alignment localization chromosome localization organelle localization establishment of localization in cell mitotic sister chromatid segregation cell cycle chromosome segregation cell cycle process mitotic nuclear division attachment of spindle microtubules to kinetochore sister chromatid biorientation organelle fission attachment of mitotic spindle microtubules to kinetochore chromosome organization sister chromatid segregation establishment of localization mitotic sister chromatid biorientation nuclear division mitotic cell cycle process nuclear chromosome segregation establishment of chromosome localization mitotic spindle organization microtubule cytoskeleton organization involved in mitosis spindle organization repair of kinetochore microtubule attachment defect repair of mitotic kinetochore microtubule attachment defect protein polymerization protein-containing complex organization microtubule polymerization cellular component biogenesis microtubule polymerization or depolymerization cellular component assembly protein-containing complex assembly supramolecular fiber organization microtubule nucleation	intracellular organelle intracellular anatomical structure cytoskeleton spindle organelle intracellular non-membrane-bounded organelle spindle pole cellular anatomical entity microtubule cytoskeleton non-membrane-bounded organelle chromosome chromosomal region kinetochore chromosome, centromeric region intracellular organelle intracellular anatomical structure cytoskeleton spindle organelle intracellular non-membrane-bounded organelle spindle pole cellular anatomical entity microtubule cytoskeleton non-membrane-bounded organelle chromosome chromosomal region kinetochore chromosome, centromeric region condensed chromosome, centromeric region supramolecular complex condensed chromosome cell periphery cell cortex cytoplasm microtubule organizing center spindle pole body polymeric cytoskeletal fiber spindle microtubule supramolecular fiber microtubule supramolecular polymer

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR016024	Armadillo-type fold	Homologous Superfamily
A	IPR048491	XMAP215/Dis1/CLASP, TOG domain	Domain
A	IPR048492	Stu2, C-terminal segment	Domain
A	IPR034085	TOG domain	Domain
A	IPR021133	HEAT, type 2	Repeat
A	IPR011989	Armadillo-like helical	Homologous Superfamily
A	IPR045110	XMAP215	Family

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.