Annotations: 3QJO

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF14830	e3qjoA2	A: beta sandwiches	X: jelly-roll	H: C-terminal domain of mullusc hemocyanin (From Topology)	T: C-terminal domain of mullusc hemocyanin	F: PF14830	ECOD (1.6)
A	F_UNCLASSIFIED	e3qjoA3	A: beta sandwiches	X: Cupredoxin-like	H: Cupredoxin-related (From Topology)	T: Cupredoxin-related	F: F_UNCLASSIFIED	ECOD (1.6)
A	PF00264	e3qjoA1	A: alpha arrays	X: Di-copper centre-containing domain (From Topology)	H: Di-copper centre-containing domain (From Topology)	T: Di-copper centre-containing domain	F: PF00264	ECOD (1.6)
B	PF14830	e3qjoB2	A: beta sandwiches	X: jelly-roll	H: C-terminal domain of mullusc hemocyanin (From Topology)	T: C-terminal domain of mullusc hemocyanin	F: PF14830	ECOD (1.6)
B	F_UNCLASSIFIED	e3qjoB3	A: beta sandwiches	X: Cupredoxin-like	H: Cupredoxin-related (From Topology)	T: Cupredoxin-related	F: F_UNCLASSIFIED	ECOD (1.6)
B	PF00264	e3qjoB1	A: alpha arrays	X: Di-copper centre-containing domain (From Topology)	H: Di-copper centre-containing domain (From Topology)	T: Di-copper centre-containing domain	F: PF00264	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.1280.10	Mainly Alpha	Orthogonal Bundle	di-copper center containing domain from catechol oxidase	Di-copper center containing domain from catechol oxidase	CATH (4.3.0)
A	2.60.310.10	Mainly Beta	Sandwich	Hemocyanin	Chain: A, domain 2	CATH (4.3.0)
A	2.60.40.2570	Mainly Beta	Sandwich	Immunoglobulin-like		CATH (4.3.0)
B	1.10.1280.10	Mainly Alpha	Orthogonal Bundle	di-copper center containing domain from catechol oxidase	Di-copper center containing domain from catechol oxidase	CATH (4.3.0)
B	2.60.310.10	Mainly Beta	Sandwich	Hemocyanin	Chain: A, domain 2	CATH (4.3.0)
B	2.60.40.2570	Mainly Beta	Sandwich	Immunoglobulin-like		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00264	Common central domain of tyrosinase (Tyrosinase)	Common central domain of tyrosinase	This family also contains polyphenol oxidases and some hemocyanins. Binds two copper ions via two sets of three histidines. This family is related to Pfam:PF00372.	Domain
A, B	PF14830	Haemocyanin beta-sandwich (Haemocyan_bet_s)	Haemocyanin beta-sandwich	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Hemocyanin 1	oxidoreductase activity catalytic activity oxygen carrier activity molecular carrier activity cation binding ion binding binding metal ion binding small molecule binding	-	extracellular region cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR008922	Di-copper centre-containing domain superfamily	Homologous Superfamily
A, B	IPR036848	Haemocyanin C-terminal domain superfamily	Homologous Superfamily
A, B	IPR028999	Haemocyanin beta-sandwich domain	Domain
A, B	IPR002227	Tyrosinase copper-binding domain	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.