Annotations: 1U3A

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1u3aa_	Alpha and beta proteins (a/b)	Thioredoxin fold	Thioredoxin-like	DsbA-like	Disulfide-bond formation facilitator (DsbA)	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
B	d1u3ab_	Alpha and beta proteins (a/b)	Thioredoxin fold	Thioredoxin-like	DsbA-like	Disulfide-bond formation facilitator (DsbA)	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
C [auth D]	d1u3ad_	Alpha and beta proteins (a/b)	Thioredoxin fold	Thioredoxin-like	DsbA-like	Disulfide-bond formation facilitator (DsbA)	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
D [auth E]	d1u3ae_	Alpha and beta proteins (a/b)	Thioredoxin fold	Thioredoxin-like	DsbA-like	Disulfide-bond formation facilitator (DsbA)	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Thioredoxin-like	8035549	3000031	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Thioredoxin-like	8035549	3000031	SCOP2B (2022-06-29)
C [auth D]	SCOP2B Superfamily	Thioredoxin-like	8035549	3000031	SCOP2B (2022-06-29)
D [auth E]	SCOP2B Superfamily	Thioredoxin-like	8035549	3000031	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	DsbA_DsbA	e1u3aA2	A: alpha arrays	X: Insertion subdomain in DsbA-like	H: Insertion subdomain in DsbA-like (From Topology)	T: Insertion subdomain in DsbA-like	F: DsbA_DsbA	ECOD (1.6)
A	Thioredoxin_1	e1u3aA3	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: Thioredoxin_1	ECOD (1.6)
B	DsbA_DsbA	e1u3aB2	A: alpha arrays	X: Insertion subdomain in DsbA-like	H: Insertion subdomain in DsbA-like (From Topology)	T: Insertion subdomain in DsbA-like	F: DsbA_DsbA	ECOD (1.6)
B	Thioredoxin_1	e1u3aB3	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: Thioredoxin_1	ECOD (1.6)
C [auth D]	DsbA_DsbA	e1u3aD2	A: alpha arrays	X: Insertion subdomain in DsbA-like	H: Insertion subdomain in DsbA-like (From Topology)	T: Insertion subdomain in DsbA-like	F: DsbA_DsbA	ECOD (1.6)
C [auth D]	Thioredoxin_1	e1u3aD3	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: Thioredoxin_1	ECOD (1.6)
D [auth E]	DsbA_DsbA	e1u3aE2	A: alpha arrays	X: Insertion subdomain in DsbA-like	H: Insertion subdomain in DsbA-like (From Topology)	T: Insertion subdomain in DsbA-like	F: DsbA_DsbA	ECOD (1.6)
D [auth E]	Thioredoxin_1	e1u3aE3	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: Thioredoxin_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.30.10	Alpha Beta	3-Layer(aba) Sandwich	Glutaredoxin	Glutaredoxin	CATH (4.3.0)
B	3.40.30.10	Alpha Beta	3-Layer(aba) Sandwich	Glutaredoxin	Glutaredoxin	CATH (4.3.0)
C [auth D]	3.40.30.10	Alpha Beta	3-Layer(aba) Sandwich	Glutaredoxin	Glutaredoxin	CATH (4.3.0)
D [auth E]	3.40.30.10	Alpha Beta	3-Layer(aba) Sandwich	Glutaredoxin	Glutaredoxin	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C [auth D], D [auth E]	PF01323	DSBA-like thioredoxin domain (DSBA)	DSBA-like thioredoxin domain	This family contains a diverse set of proteins with a thioredoxin-like structure Pfam:PF00085. This family also includes 2-hydroxychromene-2-carboxylate (HCCA) isomerase enzymes catalyse one step in prokaryotic polyaromatic hydrocarbon (PAH) cataboli ...	This family contains a diverse set of proteins with a thioredoxin-like structure Pfam:PF00085. This family also includes 2-hydroxychromene-2-carboxylate (HCCA) isomerase enzymes catalyse one step in prokaryotic polyaromatic hydrocarbon (PAH) catabolic pathways [2,3,4]. This family also contains members with functions other than HCCA isomerisation, such as Kappa family GSTs (e.g. Swiss:P24473), whose similarity to HCCA isomerases was not previously recognised. The sequence Swiss:O07298 has been annotated as a dioxygenase but is almost certainly an HCCA isomerase enzyme. Similarly, the sequence Swiss:Q9ZI67 has been annotated as a dehydrogenase, but is most probably also an HCCA isomerase enzyme. In addition, the Rhizobium leguminosarum Swiss:Q52782 protein has been annotated as a putative glycerol-3-phosphate transfer protein, but is also most likely to be an HCCA isomerase enzyme (see [5]).	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C [auth D], D [auth E]	Thiol: disulfide interchange protein dsbA	isomerase activity intramolecular oxidoreductase activity catalytic activity, acting on a protein intramolecular oxidoreductase activity, transposing S-S bonds catalytic activity protein disulfide isomerase activity oxidoreductase activity, acting on a sulfur group of donors disulfide oxidoreductase activity oxidoreductase activity protein-disulfide reductase activity	cellular response to stimulus cellular response to antibiotic cellular response to chemical stimulus response to stimulus response to chemical cellular process response to antibiotic	cellular anatomical structure outer membrane-bounded periplasmic space cell envelope periplasmic space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C [auth D], D [auth E]	IPR050824	Bacterial Thiol:disulfide Interchange Protein DsbA	Family
A, B, C [auth D], D [auth E]	IPR023205	Thiol:disulphide interchange protein DsbA/DsbL	Family
A, B, C [auth D], D [auth E]	IPR001853	DSBA-like thioredoxin domain	Domain
A, B, C [auth D], D [auth E]	IPR017937	Thioredoxin, conserved site	Conserved Site
A, B, C [auth D], D [auth E]	IPR013766	Thioredoxin domain	Domain
A, B, C [auth D], D [auth E]	IPR036249	Thioredoxin-like superfamily	Homologous Superfamily

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, B, C [auth D], D [auth E]	OPM	Monotopic/peripheral	Alpha/Beta monotopic/peripheral	Thioredoxin-like	DSBA-like thioredoxin 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.