Annotations: 4GFC

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	XRCC4 N-terminal domain-like	8051830	3001319	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)
A	F_UNCLASSIFIED	e4gfcA4	A: beta barrels	X: XRCC4, N-terminal domain-like	H: XRCC4, N-terminal domain (From Topology)	T: XRCC4, N-terminal domain	F: F_UNCLASSIFIED	ECOD (1.6)
A	F_UNCLASSIFIED	e4gfcA2	A: alpha arrays	X: HTH	H: HTH	T: HTH motif inserted in other structures	F: F_UNCLASSIFIED	ECOD (1.6)
A	PF21503	e4gfcA3	A: alpha duplicates or obligate multimers	X: XRCC4 C-terminal oligomerization domain (From Topology)	H: XRCC4 C-terminal oligomerization domain (From Topology)	T: XRCC4 C-terminal oligomerization domain	F: PF21503	ECOD (1.6)
B	F_UNCLASSIFIED	e4gfcB1	A: beta barrels	X: XRCC4, N-terminal domain-like	H: XRCC4, N-terminal domain (From Topology)	T: XRCC4, N-terminal domain	F: F_UNCLASSIFIED	ECOD (1.6)
B	F_UNCLASSIFIED	e4gfcB2	A: alpha arrays	X: HTH	H: HTH	T: HTH motif inserted in other structures	F: F_UNCLASSIFIED	ECOD (1.6)
B	PF21503	e4gfcB3	A: alpha duplicates or obligate multimers	X: XRCC4 C-terminal oligomerization domain (From Topology)	H: XRCC4 C-terminal oligomerization domain (From Topology)	T: XRCC4 C-terminal oligomerization domain	F: PF21503	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.170.210.20	Mainly Beta	Beta Complex	Dna Repair Protein Xrcc4	Chain: A, domain 1	CATH (4.3.0)
B	2.170.210.20	Mainly Beta	Beta Complex	Dna Repair Protein Xrcc4	Chain: A, domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF16531	Centriolar protein SAS N-terminal (SAS-6_N)	Centriolar protein SAS N-terminal	SAS-6_N is the N-terminal domain of the SAS-6 centriolar protein, both in C.elegans and in humans. The N-terminal domain is the region through which the 9 rod-shaped homodimers that SAS-6 forms on oligomerisation interact with each other. Proper func ...	SAS-6_N is the N-terminal domain of the SAS-6 centriolar protein, both in C.elegans and in humans. The N-terminal domain is the region through which the 9 rod-shaped homodimers that SAS-6 forms on oligomerisation interact with each other. Proper functioning of the centriole requires this correct oligomerisation [1].	Domain
A, B	PF21503	Centriolar protein SAS, helical domain (Sas-6_helical)	Centriolar protein SAS, helical domain	This domain is found in Spindle assembly abnormal protein 6 from Caenorhabditis elegans (Sas-6), which is essential for centriole formation. This domain is C-terminal to Pfam:PF16531. It shows an alpha-helical conformation [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Spindle assembly abnormal protein 6	protein binding binding protein domain specific binding identical protein binding	centriole assembly microtubule organizing center organization organelle assembly non-membrane-bounded organelle assembly microtubule cytoskeleton organization cellular component organization cellular component biogenesis organelle organization cellular component assembly cellular process microtubule-based process cellular component organization or biogenesis cytoskeleton organization protein localization centriole assembly microtubule organizing center organization organelle assembly non-membrane-bounded organelle assembly microtubule cytoskeleton organization cellular component organization cellular component biogenesis organelle organization cellular component assembly cellular process microtubule-based process cellular component organization or biogenesis cytoskeleton organization protein localization localization cellular localization cellular macromolecule localization macromolecule localization centrosome duplication centrosome cycle cell cycle cell cycle process regulation of biological process regulation of cellular process biological regulation regulation of cell cycle centriole replication	intracellular organelle centrosome microtubule organizing center intracellular anatomical structure cytoskeleton organelle intracellular non-membrane-bounded organelle cellular anatomical entity microtubule cytoskeleton non-membrane-bounded organelle centriole cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR048600	Spindle assembly abnormal protein 6, helical domain	Domain
A, B	IPR038558	SAS-6, N-terminal domain superfamily	Homologous Superfamily
A, B	IPR032396	Spindle assembly abnormal protein 6, N-terminal	Domain

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 R01GM133198.