3QFA

Crystal structure of the human thioredoxin reductase-thioredoxin complex

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
D	d3qfad1	Alpha and beta proteins (a/b)	Thioredoxin fold	Thioredoxin-like	Thioltransferase	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
D	d3qfad2	Artifacts	Tags	Tags	Tags	N-terminal Tags	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
C	d3qfac1	Alpha and beta proteins (a/b)	Thioredoxin fold	Thioredoxin-like	Thioltransferase	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
C	d3qfac2	Artifacts	Tags	Tags	Tags	N-terminal Tags	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
D	SCOP2B Superfamily	Thioredoxin-like	8042720	3000031	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Thioredoxin-like	8042720	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	Pyr_redox_dim	e3qfaA1	A: a+b two layers	X: FAD-linked reductases, C-terminal domain-like	H: FAD/NAD-linked reduatases, dimerisation (C-terminal) domain (From Topology)	T: FAD/NAD-linked reduatases, dimerisation (C-terminal) domain	F: Pyr_redox_dim	ECOD (1.6)
A	Pyr_redox_2_1	e3qfaA3	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: FAD/NAD(P)-binding domain	F: Pyr_redox_2_1	ECOD (1.6)
A	Pyr_redox_2	e3qfaA2	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: FAD/NAD(P)-binding domain	F: Pyr_redox_2	ECOD (1.6)
B	Pyr_redox_dim	e3qfaB1	A: a+b two layers	X: FAD-linked reductases, C-terminal domain-like	H: FAD/NAD-linked reduatases, dimerisation (C-terminal) domain (From Topology)	T: FAD/NAD-linked reduatases, dimerisation (C-terminal) domain	F: Pyr_redox_dim	ECOD (1.6)
B	Pyr_redox_2_1	e3qfaB3	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: FAD/NAD(P)-binding domain	F: Pyr_redox_2_1	ECOD (1.6)
B	Pyr_redox_2	e3qfaB2	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: FAD/NAD(P)-binding domain	F: Pyr_redox_2	ECOD (1.6)
D	Thioredoxin	e3qfaD1	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: Thioredoxin	ECOD (1.6)
C	Thioredoxin	e3qfaC1	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: Thioredoxin	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.50.50.60	Alpha Beta	3-Layer(bba) Sandwich	FAD/NAD(P)-binding domain	FAD/NAD(P)-binding domain	CATH (4.3.0)
A	3.30.390.30	Alpha Beta	2-Layer Sandwich	Enolase-like	domain 1	CATH (4.3.0)
B	3.50.50.60	Alpha Beta	3-Layer(bba) Sandwich	FAD/NAD(P)-binding domain	FAD/NAD(P)-binding domain	CATH (4.3.0)
B	3.30.390.30	Alpha Beta	2-Layer Sandwich	Enolase-like	domain 1	CATH (4.3.0)
D	3.40.30.10	Alpha Beta	3-Layer(aba) Sandwich	Glutaredoxin	Glutaredoxin	CATH (4.3.0)
C	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	PF07992	Pyridine nucleotide-disulphide oxidoreductase (Pyr_redox_2)	Pyridine nucleotide-disulphide oxidoreductase	This family includes both class I and class II oxidoreductases and also NADH oxidases and peroxidases. This domain is actually a small NADH binding domain within a larger FAD binding domain.	Domain
A, B	PF02852	Pyridine nucleotide-disulphide oxidoreductase, dimerisation domain (Pyr_redox_dim)	Pyridine nucleotide-disulphide oxidoreductase, dimerisation domain	This family includes both class I and class II oxidoreductases and also NADH oxidases and peroxidases.	Domain
C, D	PF00085	Thioredoxin (Thioredoxin)	Thioredoxin	Thioredoxins are small enzymes that participate in redox reactions, via the reversible oxidation of an active centre disulfide bond. Some members with only the active site are not separated from the noise.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Thioredoxin reductase 1, cytoplasmic	thioredoxin-disulfide reductase (NADPH) activity oxidoreductase activity, acting on a sulfur group of donors oxidoreductase activity disulfide oxidoreductase activity antioxidant activity catalytic activity, acting on a protein protein-disulfide reductase activity protein-disulfide reductase (NAD(P)H) activity catalytic activity oxidoreductase activity, acting on a sulfur group of donors, NAD(P) as acceptor FAD binding flavin adenine dinucleotide binding binding nucleoside phosphate binding thioredoxin-disulfide reductase (NADPH) activity oxidoreductase activity, acting on a sulfur group of donors oxidoreductase activity disulfide oxidoreductase activity antioxidant activity catalytic activity, acting on a protein protein-disulfide reductase activity protein-disulfide reductase (NAD(P)H) activity catalytic activity oxidoreductase activity, acting on a sulfur group of donors, NAD(P) as acceptor FAD binding flavin adenine dinucleotide binding binding nucleoside phosphate binding ion binding organic cyclic compound binding anion binding nucleotide binding heterocyclic compound binding small molecule binding peroxidase activity oxidoreductase activity, acting on peroxide as acceptor NADPH peroxidase activity identical protein binding protein binding	cell redox homeostasis cellular homeostasis homeostatic process cell population proliferation cellular process cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation signal transduction cell communication developmental process cell redox homeostasis cellular homeostasis homeostatic process cell population proliferation cellular process cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation signal transduction cell communication developmental process multicellular organismal process formation of primary germ layer mesoderm morphogenesis embryonic morphogenesis tissue development embryo development gastrulation tissue morphogenesis anatomical structure morphogenesis multicellular organism development anatomical structure development anatomical structure formation involved in morphogenesis mesoderm formation mesoderm development	membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle extracellular exosome extracellular vesicle extracellular organelle extracellular region extracellular space vesicle membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle extracellular exosome extracellular vesicle extracellular organelle extracellular region extracellular space vesicle extracellular membrane-bounded organelle cytosol nucleus membrane-enclosed lumen intracellular membraneless organelle nucleolus intracellular organelle lumen organelle lumen fibrillar center membraneless organelle nuclear lumen nucleoplasm
C, D	Thioredoxin	thioredoxin-disulfide reductase (NADPH) activity oxidoreductase activity, acting on a sulfur group of donors oxidoreductase activity disulfide oxidoreductase activity antioxidant activity catalytic activity, acting on a protein protein-disulfide reductase activity protein-disulfide reductase (NAD(P)H) activity catalytic activity oxidoreductase activity, acting on a sulfur group of donors, NAD(P) as acceptor RNA binding binding organic cyclic compound binding nucleic acid binding thioredoxin-disulfide reductase (NADPH) activity oxidoreductase activity, acting on a sulfur group of donors oxidoreductase activity disulfide oxidoreductase activity antioxidant activity catalytic activity, acting on a protein protein-disulfide reductase activity protein-disulfide reductase (NAD(P)H) activity catalytic activity oxidoreductase activity, acting on a sulfur group of donors, NAD(P) as acceptor RNA binding binding organic cyclic compound binding nucleic acid binding identical protein binding protein binding protein homodimerization activity protein dimerization activity	regulation of molecular function positive regulation of molecular function regulation of DNA binding regulation of binding biological regulation positive regulation of binding positive regulation of DNA binding regulation of cellular process regulation of protein modification process positive regulation of protein metabolic process positive regulation of biological process regulation of primary metabolic process positive regulation of peptidyl-cysteine S-nitrosylation positive regulation of metabolic process regulation of molecular function positive regulation of molecular function regulation of DNA binding regulation of binding biological regulation positive regulation of binding positive regulation of DNA binding regulation of cellular process regulation of protein modification process positive regulation of protein metabolic process positive regulation of biological process regulation of primary metabolic process positive regulation of peptidyl-cysteine S-nitrosylation positive regulation of metabolic process positive regulation of protein modification process peptidyl-amino acid modification positive regulation of macromolecule metabolic process protein metabolic process protein modification process positive regulation of cellular process regulation of biological process peptidyl-cysteine modification regulation of protein metabolic process primary metabolic process regulation of macromolecule metabolic process peptidyl-cysteine S-nitrosylation regulation of peptidyl-cysteine S-nitrosylation macromolecule modification metabolic process cellular process macromolecule metabolic process protein nitrosylation regulation of metabolic process protein localization negative regulation of protein transport regulation of localization establishment of protein localization negative regulation of nucleocytoplasmic transport nitrogen compound transport nucleocytoplasmic transport nuclear transport negative regulation of biological process negative regulation of intracellular protein transport negative regulation of transport localization establishment of localization in cell cellular macromolecule localization nuclear export regulation of protein export from nucleus regulation of intracellular transport negative regulation of establishment of protein localization intracellular transport regulation of nucleocytoplasmic transport protein localization to nucleus protein export from nucleus establishment of localization maintenance of location regulation of intracellular protein transport intracellular protein transport maintenance of protein location cellular localization regulation of protein localization transport maintenance of location in cell maintenance of protein location in cell negative regulation of cellular process negative regulation of protein export from nucleus negative regulation of protein localization negative regulation of intracellular transport regulation of transport regulation of establishment of protein localization maintenance of protein location in nucleus regulation of protein transport protein transport regulation of cellular localization macromolecule localization protein localization to organelle maintenance of protein localization in organelle positive regulation of phosphorylation regulation of catalytic activity regulation of protein phosphorylation regulation of transferase activity positive regulation of phosphate metabolic process regulation of phosphate metabolic process phosphate-containing compound metabolic process activation of protein kinase B activity positive regulation of protein kinase activity phosphorus metabolic process positive regulation of protein phosphorylation protein phosphorylation positive regulation of transferase activity positive regulation of phosphorus metabolic process phosphorylation positive regulation of catalytic activity regulation of protein kinase activity positive regulation of kinase activity regulation of kinase activity activation of protein kinase activity regulation of phosphorylation regulation of phosphorus metabolic process response to stimulus response to radiation response to abiotic stimulus regulation of peptidyl-serine phosphorylation peptidyl-serine modification peptidyl-serine phosphorylation positive regulation of peptidyl-serine phosphorylation cellular response to stimulus positive regulation of cell communication regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction positive regulation of signal transduction signaling regulation of signal transduction intracellular signal transduction cell communication positive regulation of response to stimulus regulation of intracellular signal transduction intracellular signaling cassette signal transduction regulation of signaling positive regulation of intracellular signal transduction positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction regulation of response to stimulus regulation of cell communication phosphatidylinositol 3-kinase/protein kinase B signal transduction positive regulation of signaling cellular detoxification of hydrogen peroxide detoxification of inorganic compound detoxification cellular response to oxidative stress reactive oxygen species metabolic process cellular response to chemical stress cellular oxidant detoxification response to hydrogen peroxide cellular response to reactive oxygen species cellular response to stress response to stress cellular detoxification hydrogen peroxide metabolic process response to oxygen-containing compound cellular response to oxygen-containing compound response to reactive oxygen species cellular response to hydrogen peroxide response to toxic substance response to oxidative stress cellular response to chemical stimulus response to chemical detoxification of hydrogen peroxide cellular response to toxic substance cell redox homeostasis cellular homeostasis homeostatic process RNA metabolic process negative regulation of RNA biosynthetic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process regulation of RNA metabolic process transcription by RNA polymerase II negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process negative regulation of macromolecule metabolic process regulation of biosynthetic process regulation of transcription by RNA polymerase II negative regulation of DNA-templated transcription negative regulation of transcription by RNA polymerase II negative regulation of metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of gene expression biosynthetic process negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process regulation of macromolecule biosynthetic process regulation of DNA-templated transcription negative regulation of RNA metabolic process response to nitric oxide response to nitrogen compound	extracellular exosome membrane-bounded organelle extracellular vesicle cellular anatomical structure extracellular organelle extracellular region organelle extracellular space vesicle extracellular membrane-bounded organelle intracellular anatomical structure cytoplasm cytosol nucleus extracellular exosome membrane-bounded organelle extracellular vesicle cellular anatomical structure extracellular organelle extracellular region organelle extracellular space vesicle extracellular membrane-bounded organelle intracellular anatomical structure cytoplasm cytosol nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle nucleoplasm organelle lumen nuclear lumen

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR004099	Pyridine nucleotide-disulphide oxidoreductase, dimerisation domain	Domain
A, B	IPR046952	Glutathione reductase/thioredoxin reductase-like	Family
A, B	IPR016156	FAD/NAD-linked reductase, dimerisation domain superfamily	Homologous Superfamily
A, B	IPR036188	FAD/NAD(P)-binding domain superfamily	Homologous Superfamily
A, B	IPR002109	Glutaredoxin	Domain
A, B	IPR023753	FAD/NAD(P)-binding domain	Domain
A, B	IPR006338	Thioredoxin/glutathione reductase selenoprotein	Family
A, B	IPR012999	Pyridine nucleotide-disulphide oxidoreductase, class I, active site	Active Site
A, B	IPR036249	Thioredoxin-like superfamily	Homologous Superfamily
C, D	IPR017937	Thioredoxin, conserved site	Conserved Site
C, D	IPR013766	Thioredoxin domain	Domain
C, D	IPR005746	Thioredoxin	Family
C, D	IPR036249	Thioredoxin-like superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: Q16881	follicular thyroid adenoma microcystic adenoma Carcinoma, Lewis Lung papillary adenoma adenoma colorectal cancer contact dermatitis epilepsy osteoarthritis ovarian cancer tuberculosis benign mesothelioma colorectal carcinoma lung cancer myocardial ischemia follicular thyroid adenoma microcystic adenoma Carcinoma, Lewis Lung papillary adenoma adenoma colorectal cancer contact dermatitis epilepsy osteoarthritis ovarian cancer tuberculosis benign mesothelioma colorectal carcinoma lung cancer myocardial ischemia osteoarthritis susceptibility 1 pancreatic intraductal papillary-mucinous neoplasm acute promyelocytic leukemia coronary artery disease esophageal adenocarcinoma mesothelioma myopathy Barrett esophagus
C, D	Pharos: P10599	bronchopulmonary dysplasia acute lung injury liver disease malignant mesothelioma Neoplasm Invasiveness contact dermatitis pancreatic intraductal papillary-mucinous carcinoma polycystic ovary syndrome lung carcinoma myopathy oligodendroglioma pancreatic intraductal papillary-mucinous neoplasm amyotrophic lateral sclerosis cancer diabetes mellitus bronchopulmonary dysplasia acute lung injury liver disease malignant mesothelioma Neoplasm Invasiveness contact dermatitis pancreatic intraductal papillary-mucinous carcinoma polycystic ovary syndrome lung carcinoma myopathy oligodendroglioma pancreatic intraductal papillary-mucinous neoplasm amyotrophic lateral sclerosis cancer diabetes mellitus ovarian cancer plasma cell myeloma astrocytic tumor Duchenne muscular dystrophy lung cancer malignant pancreatic neoplasm

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.