Annotations: 2YAX

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
E	d2yaxe_	Alpha and beta proteins (a+b)	Ferredoxin-like	Dimeric alpha+beta barrel	SOR-like	automated matches	(Acidianus ambivalens ) [TaxId: 2283 ],	SCOPe (2.08)
A	d2yaxa_	Alpha and beta proteins (a+b)	Ferredoxin-like	Dimeric alpha+beta barrel	SOR-like	automated matches	(Acidianus ambivalens ) [TaxId: 2283 ],	SCOPe (2.08)
D	d2yaxd_	Alpha and beta proteins (a+b)	Ferredoxin-like	Dimeric alpha+beta barrel	SOR-like	automated matches	(Acidianus ambivalens ) [TaxId: 2283 ],	SCOPe (2.08)
B	d2yaxb_	Alpha and beta proteins (a+b)	Ferredoxin-like	Dimeric alpha+beta barrel	SOR-like	automated matches	(Acidianus ambivalens ) [TaxId: 2283 ],	SCOPe (2.08)
C	d2yaxc_	Alpha and beta proteins (a+b)	Ferredoxin-like	Dimeric alpha+beta barrel	SOR-like	automated matches	(Acidianus ambivalens ) [TaxId: 2283 ],	SCOPe (2.08)
F	d2yaxf_	Alpha and beta proteins (a+b)	Ferredoxin-like	Dimeric alpha+beta barrel	SOR-like	automated matches	(Acidianus ambivalens ) [TaxId: 2283 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
E	SCOP2B Superfamily	Dimeric alpha+beta barrel	8090915	3000089	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Dimeric alpha+beta barrel	8038618	3000089	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Dimeric alpha+beta barrel	8090915	3000089	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Dimeric alpha+beta barrel	8038618	3000089	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Dimeric alpha+beta barrel	8090915	3000089	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Dimeric alpha+beta barrel	8038618	3000089	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Dimeric alpha+beta barrel	8090915	3000089	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Dimeric alpha+beta barrel	8038618	3000089	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Dimeric alpha+beta barrel	8038618	3000089	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Dimeric alpha+beta barrel	8090915	3000089	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Dimeric alpha+beta barrel	8090915	3000089	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Dimeric alpha+beta barrel	8038618	3000089	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)
E	SOR_N	e2yaxE2	A: a+b two layers	X: Alpha-beta plaits	H: Dimeric alpha+beta barrel (From Topology)	T: Dimeric alpha+beta barrel	F: SOR_N	ECOD (1.6)
E	SOR_C	e2yaxE1	A: a+b two layers	X: Alpha-beta plaits	H: Dimeric alpha+beta barrel (From Topology)	T: Dimeric alpha+beta barrel	F: SOR_C	ECOD (1.6)
A	SOR_N	e2yaxA2	A: a+b two layers	X: Alpha-beta plaits	H: Dimeric alpha+beta barrel (From Topology)	T: Dimeric alpha+beta barrel	F: SOR_N	ECOD (1.6)
A	SOR_C	e2yaxA1	A: a+b two layers	X: Alpha-beta plaits	H: Dimeric alpha+beta barrel (From Topology)	T: Dimeric alpha+beta barrel	F: SOR_C	ECOD (1.6)
D	SOR_N	e2yaxD2	A: a+b two layers	X: Alpha-beta plaits	H: Dimeric alpha+beta barrel (From Topology)	T: Dimeric alpha+beta barrel	F: SOR_N	ECOD (1.6)
D	SOR_C	e2yaxD1	A: a+b two layers	X: Alpha-beta plaits	H: Dimeric alpha+beta barrel (From Topology)	T: Dimeric alpha+beta barrel	F: SOR_C	ECOD (1.6)
B	SOR_N	e2yaxB2	A: a+b two layers	X: Alpha-beta plaits	H: Dimeric alpha+beta barrel (From Topology)	T: Dimeric alpha+beta barrel	F: SOR_N	ECOD (1.6)
B	SOR_C	e2yaxB1	A: a+b two layers	X: Alpha-beta plaits	H: Dimeric alpha+beta barrel (From Topology)	T: Dimeric alpha+beta barrel	F: SOR_C	ECOD (1.6)
C	SOR_N	e2yaxC2	A: a+b two layers	X: Alpha-beta plaits	H: Dimeric alpha+beta barrel (From Topology)	T: Dimeric alpha+beta barrel	F: SOR_N	ECOD (1.6)
C	SOR_C	e2yaxC1	A: a+b two layers	X: Alpha-beta plaits	H: Dimeric alpha+beta barrel (From Topology)	T: Dimeric alpha+beta barrel	F: SOR_C	ECOD (1.6)
F	SOR_N	e2yaxF2	A: a+b two layers	X: Alpha-beta plaits	H: Dimeric alpha+beta barrel (From Topology)	T: Dimeric alpha+beta barrel	F: SOR_N	ECOD (1.6)
F	SOR_C	e2yaxF1	A: a+b two layers	X: Alpha-beta plaits	H: Dimeric alpha+beta barrel (From Topology)	T: Dimeric alpha+beta barrel	F: SOR_C	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, D, E	PF07682	Sulphur oxygenase reductase (SOR)	Sulphur oxygenase reductase	The sulphur oxygenase/reductase (SOR) of the thermo-acidophilic archaeon Acidianus ambivalens is an unusual enzyme consisting of 24 identical subunits arranged in a perfectly symmetrical hollow sphere and containing a mononuclear non-heme iron centre ...	The sulphur oxygenase/reductase (SOR) of the thermo-acidophilic archaeon Acidianus ambivalens is an unusual enzyme consisting of 24 identical subunits arranged in a perfectly symmetrical hollow sphere and containing a mononuclear non-heme iron centre (personal communication: A. Kletzin). At 85 degrees C in vitro, elemental sulphur is oxidised to sulphite, thiosulphate and hydrogen sulphide with no external cofactors needed. The proposed equation is: 4S + O2 + 4 H2O ---> 2 HSO3- + 2 H2S + 2 H+.	Domain
B, C, F	PF07682	Sulphur oxygenase reductase (SOR)	Sulphur oxygenase reductase	The sulphur oxygenase/reductase (SOR) of the thermo-acidophilic archaeon Acidianus ambivalens is an unusual enzyme consisting of 24 identical subunits arranged in a perfectly symmetrical hollow sphere and containing a mononuclear non-heme iron centre ...	The sulphur oxygenase/reductase (SOR) of the thermo-acidophilic archaeon Acidianus ambivalens is an unusual enzyme consisting of 24 identical subunits arranged in a perfectly symmetrical hollow sphere and containing a mononuclear non-heme iron centre (personal communication: A. Kletzin). At 85 degrees C in vitro, elemental sulphur is oxidised to sulphite, thiosulphate and hydrogen sulphide with no external cofactors needed. The proposed equation is: 4S + O2 + 4 H2O ---> 2 HSO3- + 2 H2S + 2 H+.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, D, E	SULFUR OXYGENASE/REDUCTASE	oxidoreductase activity, acting on single donors with incorporation of molecular oxygen, incorporation of two atoms of oxygen oxidoreductase activity sulfur oxygenase/reductase activity oxidoreductase activity, acting on single donors with incorporation of molecular oxygen catalytic activity dioxygenase activity cation binding ion binding binding metal ion binding small molecule binding	-	intracellular anatomical structure cytoplasm cellular anatomical entity
B, C, F	SULFUR OXYGENASE/REDUCTASE	oxidoreductase activity, acting on single donors with incorporation of molecular oxygen, incorporation of two atoms of oxygen oxidoreductase activity sulfur oxygenase/reductase activity oxidoreductase activity, acting on single donors with incorporation of molecular oxygen catalytic activity dioxygenase activity cation binding ion binding binding metal ion binding small molecule binding	-	intracellular anatomical structure cytoplasm cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, D, E	IPR011661	Sulphur oxygenase reductase	Family
A, D, E	IPR011008	Dimeric alpha-beta barrel	Homologous Superfamily
B, C, F	IPR011661	Sulphur oxygenase reductase	Family
B, C, F	IPR011008	Dimeric alpha-beta barrel	Homologous Superfamily

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
A, D, E	CSS	Parent Component: CYS RESID: AA0269 PSI-MOD : L-cysteine persulfide MOD:00274
B, C, F	CSS	Parent Component: CYS RESID: AA0269 , AA0269 PSI-MOD : L-cysteine persulfide MOD:00274 , L-cysteine persulfide MOD:00274
B, C, F	YCM	Parent Component: CYS RESID: AA0269 , AA0269

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.