Annotations: 6XWS

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2B Superfamily	Core histone-like	8034825	3001387	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	Ribosomal_L4	e6xwsB1	A: alpha bundles	X: Immunoglobulin-like beta-sandwich	H: Anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases	T: Anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases	F: Ribosomal_L4	ECOD (develop294)
A	Ribosomal_L4	e6xwsA1	A: alpha bundles	X: Immunoglobulin-like beta-sandwich	H: Anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases	T: Anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases	F: Ribosomal_L4	ECOD (develop294)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C	Chromosome alignment defect 1,Chromosome alignment defect 1	chromatin-protein adaptor activity protein-macromolecule adaptor activity molecular adaptor activity protein carrier chaperone histone chaperone activity molecular carrier activity	organelle assembly protein-containing complex organization chromosome organization membraneless organelle assembly CENP-A containing chromatin assembly cellular component organization cellular component biogenesis organelle organization cellular component assembly chromatin organization kinetochore assembly protein-containing complex assembly kinetochore organization cellular process organelle assembly protein-containing complex organization chromosome organization membraneless organelle assembly CENP-A containing chromatin assembly cellular component organization cellular component biogenesis organelle organization cellular component assembly chromatin organization kinetochore assembly protein-containing complex assembly kinetochore organization cellular process cellular component organization or biogenesis meiotic chromosome segregation sexual reproduction reproductive process organelle fission meiotic cell cycle multicellular organismal reproductive process female gamete generation meiotic cell cycle process gamete generation nuclear division female meiotic nuclear division nuclear chromosome segregation meiotic nuclear division cell cycle female meiosis chromosome segregation chromosome segregation cell cycle process	membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle nucleolus intracellular organelle lumen intracellular organelle cellular anatomical structure organelle lumen organelle membraneless organelle nuclear lumen membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle nucleolus intracellular organelle lumen intracellular organelle cellular anatomical structure organelle lumen organelle membraneless organelle nuclear lumen chromosome, centromeric region chromosome chromosomal region kinetochore condensed chromosome, centromeric region supramolecular complex condensed chromosome
B	Histone H4	DNA binding binding nucleic acid binding protein heterodimerization activity protein binding protein dimerization activity structural molecule activity structural constituent of chromatin	protein-containing complex organization protein-DNA complex assembly cellular component organization protein-DNA complex organization cellular component biogenesis cellular component assembly chromatin organization protein-containing complex assembly chromatin remodeling cellular process cellular component organization or biogenesis nucleosome assembly nucleosome organization	membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen nuclear chromosome intracellular membraneless organelle chromosome intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle cellular anatomical structure organelle lumen organelle membraneless organelle membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen nuclear chromosome intracellular membraneless organelle chromosome intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle cellular anatomical structure organelle lumen organelle membraneless organelle nuclear lumen protein-containing complex nuclear protein-containing complex RCAF complex protein-DNA complex nucleosome chromatin
A	Histone H3-like centromeric protein cid	DNA binding binding nucleic acid binding protein heterodimerization activity protein binding protein dimerization activity structural molecule activity structural constituent of chromatin	cellular process cell cycle mitotic cell cycle organelle assembly protein-containing complex organization chromosome organization membraneless organelle assembly cellular component organization cellular component biogenesis organelle organization cellular component assembly kinetochore assembly protein-containing complex assembly kinetochore organization cellular process cell cycle mitotic cell cycle organelle assembly protein-containing complex organization chromosome organization membraneless organelle assembly cellular component organization cellular component biogenesis organelle organization cellular component assembly kinetochore assembly protein-containing complex assembly kinetochore organization cellular component organization or biogenesis regulation of cellular process negative regulation of biological process chromatin organization negative regulation of cellular process chromatin remodeling negative regulation of macromolecule metabolic process regulation of biosynthetic process regulation of biological process heterochromatin formation epigenetic regulation of gene expression negative regulation of metabolic process biological regulation heterochromatin organization regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process regulation of gene expression negative regulation of gene expression biosynthetic process negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process negative regulation of gene expression, epigenetic regulation of macromolecule biosynthetic process metabolic process macromolecule metabolic process regulation of metabolic process chromosome segregation cell cycle process mitotic nuclear division mitotic metaphase chromosome alignment organelle fission sister chromatid segregation metaphase chromosome alignment localization nuclear division mitotic cell cycle process chromosome localization organelle localization nuclear chromosome segregation mitotic sister chromatid segregation microtubule cytoskeleton organization spindle assembly microtubule-based process cytoskeleton organization spindle organization	intracellular anatomical structure intracellular membraneless organelle chromosome chromosomal region kinetochore intracellular organelle cellular anatomical structure organelle membraneless organelle chromosome, centromeric region condensed chromosome, centromeric region supramolecular complex condensed chromosome protein-containing complex intracellular anatomical structure intracellular membraneless organelle chromosome chromosomal region kinetochore intracellular organelle cellular anatomical structure organelle membraneless organelle chromosome, centromeric region condensed chromosome, centromeric region supramolecular complex condensed chromosome protein-containing complex inner kinetochore CENP-A containing chromatin protein-DNA complex nucleosome chromatin chromosome, centromeric core domain CENP-A containing nucleosome membrane-bounded organelle nucleus intracellular membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B	IPR009072	Histone-fold	Homologous Superfamily
B	IPR035425	CENP-T/Histone H4, histone fold	Domain
B	IPR001951	Histone H4	Family
B	IPR019809	Histone H4, conserved site	Conserved Site
B	IPR004823	TATA box binding protein associated factor (TAF), histone-like fold domain	Domain
A	IPR009072	Histone-fold	Homologous Superfamily
A	IPR007125	Core Histone H2A/H2B/H3 domain	Domain
A	IPR000164	Histone H3/CENP-A	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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.