Annotations: 2QSS

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2qssa_	All alpha proteins	Globin-like	Globin-like	Globins	Hemoglobin, alpha-chain	(Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)
C	d2qssc_	All alpha proteins	Globin-like	Globin-like	Globins	Hemoglobin, alpha-chain	(Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)
B	d2qssb_	All alpha proteins	Globin-like	Globin-like	Globins	Hemoglobin, beta-chain	(Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)
D	d2qssd_	All alpha proteins	Globin-like	Globin-like	Globins	Hemoglobin, beta-chain	(Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Globins	8023995	4000551	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Globin-like	8036374	3000554	SCOP2 (2022-06-29)
C	SCOP2B Superfamily	Globin-like	8036374	3000554	SCOP2B (2022-06-29)
B	SCOP2 Family	Globins	8023996	4000551	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	Globin-like	8036375	3000554	SCOP2 (2022-06-29)
D	SCOP2B Superfamily	Globin-like	8036375	3000554	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	Globin	e2qssA1	A: alpha arrays	X: Globin-like (From Topology)	H: Globin-like (From Topology)	T: Globin-like	F: Globin	ECOD (1.6)
C	Globin	e2qssC1	A: alpha arrays	X: Globin-like (From Topology)	H: Globin-like (From Topology)	T: Globin-like	F: Globin	ECOD (1.6)
B	Globin	e2qssB1	A: alpha arrays	X: Globin-like (From Topology)	H: Globin-like (From Topology)	T: Globin-like	F: Globin	ECOD (1.6)
D	Globin	e2qssD1	A: alpha arrays	X: Globin-like (From Topology)	H: Globin-like (From Topology)	T: Globin-like	F: Globin	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.490.10	Mainly Alpha	Orthogonal Bundle	Globin-like	Globins	CATH (4.3.0)
C	1.10.490.10	Mainly Alpha	Orthogonal Bundle	Globin-like	Globins	CATH (4.3.0)
B	1.10.490.10	Mainly Alpha	Orthogonal Bundle	Globin-like	Globins	CATH (4.3.0)
D	1.10.490.10	Mainly Alpha	Orthogonal Bundle	Globin-like	Globins	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, C	PF00042	Globin (Globin)	Globin	-	Domain
B, D	PF00042	Globin (Globin)	Globin	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, C	Hemoglobin subunit alpha	oxygen binding binding small molecule binding oxygen carrier activity molecular carrier activity organic cyclic compound binding tetrapyrrole binding heme binding cation binding transition metal ion binding iron ion binding ion binding metal ion binding organic acid binding	cellular catabolic process catabolic process cellular metabolic process hydrogen peroxide metabolic process reactive oxygen species metabolic process metabolic process cellular process hydrogen peroxide catabolic process cellular response to stimulus cellular detoxification cellular response to chemical stimulus response to stimulus response to chemical detoxification cellular catabolic process catabolic process cellular metabolic process hydrogen peroxide metabolic process reactive oxygen species metabolic process metabolic process cellular process hydrogen peroxide catabolic process cellular response to stimulus cellular detoxification cellular response to chemical stimulus response to stimulus response to chemical detoxification cellular oxidant detoxification cellular response to toxic substance response to toxic substance	protein-containing complex intracellular anatomical structure hemoglobin complex cytoplasm cellular anatomical entity cytosol haptoglobin-hemoglobin complex
B, D	Hemoglobin subunit beta	oxygen binding binding small molecule binding hemoglobin binding protein binding hemoglobin alpha binding oxygen carrier activity molecular carrier activity organic cyclic compound binding tetrapyrrole binding heme binding organic acid binding cation binding ion binding oxygen binding binding small molecule binding hemoglobin binding protein binding hemoglobin alpha binding oxygen carrier activity molecular carrier activity organic cyclic compound binding tetrapyrrole binding heme binding organic acid binding cation binding ion binding metal ion binding	cellular catabolic process catabolic process cellular metabolic process hydrogen peroxide metabolic process reactive oxygen species metabolic process metabolic process cellular process hydrogen peroxide catabolic process cellular response to stimulus cellular detoxification cellular response to chemical stimulus response to stimulus response to chemical detoxification cellular catabolic process catabolic process cellular metabolic process hydrogen peroxide metabolic process reactive oxygen species metabolic process metabolic process cellular process hydrogen peroxide catabolic process cellular response to stimulus cellular detoxification cellular response to chemical stimulus response to stimulus response to chemical detoxification cellular oxidant detoxification cellular response to toxic substance response to toxic substance	protein-containing complex intracellular anatomical structure hemoglobin complex cytoplasm cellular anatomical entity cytosol haptoglobin-hemoglobin complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, C	IPR050056	Hemoglobin and related oxygen transporters	Family
A, C	IPR002338	Hemoglobin, alpha-type	Family
A, C	IPR002339	Hemoglobin, pi	Family
A, C	IPR009050	Globin-like superfamily	Homologous Superfamily
A, C	IPR012292	Globin/Protoglobin	Homologous Superfamily
A, C	IPR000971	Globin	Domain
B, D	IPR050056	Hemoglobin and related oxygen transporters	Family
B, D	IPR009050	Globin-like superfamily	Homologous Superfamily
B, D	IPR012292	Globin/Protoglobin	Homologous Superfamily
B, D	IPR002337	Hemoglobin, beta-type	Family
B, D	IPR000971	Globin	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 R01GM157729.