Annotations: 4Q5G

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Serum amyloid A (SAA)-like	8047609	4005716	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Serum amyloid A (SAA)-like	8053507	3002198	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Serum amyloid A (SAA)-like	8053507	3002198	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	Usher	e4q5gA1	A: a/b three-layered sandwiches	X: Inserted helical domain in fatty acid synthase subunit beta	H: Voltage-gated ion channels	T: Voltage-gated ion channels	F: Usher	ECOD (v294.1)
B	GP120	e4q5gB1	A: a/b three-layered sandwiches	X: Ribosomal protein L31e-like	H: Ribosomal protein L31e/gp120 outer domain	T: Ribosomal protein L31e/gp120 outer domain	F: GP120	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.132.110	Mainly Alpha	Orthogonal Bundle	Topoisomerase I	Chain A, domain 4	CATH (4.3.0)
B	1.10.132.110	Mainly Alpha	Orthogonal Bundle	Topoisomerase I	Chain A, domain 4	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00277	Serum amyloid A protein (SAA)	Serum amyloid A protein	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Serum amyloid A-3 protein	molecular function activator activity molecular function regulator activity signaling receptor regulator activity receptor ligand activity chemoattractant activity signaling receptor activator activity Toll-like receptor 4 binding protein binding binding signaling receptor binding Toll-like receptor binding G protein-coupled receptor binding	response to stimulus response to chemical response to stilbenoid cell chemotaxis cellular response to stimulus chemotaxis response to external stimulus cellular response to chemical stimulus taxis cell migration cellular process cell motility locomotion acute-phase response response to stimulus response to chemical response to stilbenoid cell chemotaxis cellular response to stimulus chemotaxis response to external stimulus cellular response to chemical stimulus taxis cell migration cellular process cell motility locomotion acute-phase response defense response response to stress inflammatory response acute inflammatory response biological process involved in interspecies interaction between organisms response to other organism response to bacterium response to external biotic stimulus response to biotic stimulus response to peptide cellular response to interleukin-1 response to cytokine cellular response to cytokine stimulus response to interleukin-1	protein-containing complex cellular anatomical structure extracellular region plasma lipoprotein particle high-density lipoprotein particle extracellular space lipoprotein particle protein-lipid complex polymeric cytoskeletal fiber intracellular anatomical structure intracellular membraneless organelle cytoplasmic microtubule intracellular organelle cytoskeleton protein-containing complex cellular anatomical structure extracellular region plasma lipoprotein particle high-density lipoprotein particle extracellular space lipoprotein particle protein-lipid complex polymeric cytoskeletal fiber intracellular anatomical structure intracellular membraneless organelle cytoplasmic microtubule intracellular organelle cytoskeleton organelle membraneless organelle cytoplasm supramolecular fiber microtubule supramolecular polymer supramolecular complex microtubule cytoskeleton

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR052464	Synovial Proliferation Regulator	Family
A, B	IPR000096	Serum amyloid A protein	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.