3T58

C76A/C455S mutant of mouse QSOX1 containing an interdomain disulfide

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF04777	e3t58A3	A: alpha bundles	X: Four-helical up-and-down bundle	H: FAD-dependent thiol oxidase (From Topology)	T: FAD-dependent thiol oxidase	F: PF04777	ECOD (1.6)
A	PF18371	e3t58A1	A: alpha bundles	X: Four-helical up-and-down bundle	H: FAD-dependent thiol oxidase (From Topology)	T: FAD-dependent thiol oxidase	F: PF18371	ECOD (1.6)
A	PF00085	e3t58A5	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: PF00085	ECOD (1.6)
A	PF18108	e3t58A6	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: PF18108	ECOD (1.6)
B	PF04777	e3t58B3	A: alpha bundles	X: Four-helical up-and-down bundle	H: FAD-dependent thiol oxidase (From Topology)	T: FAD-dependent thiol oxidase	F: PF04777	ECOD (1.6)
B	PF18371	e3t58B1	A: alpha bundles	X: Four-helical up-and-down bundle	H: FAD-dependent thiol oxidase (From Topology)	T: FAD-dependent thiol oxidase	F: PF18371	ECOD (1.6)
B	PF00085	e3t58B5	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: PF00085	ECOD (1.6)
B	PF18108	e3t58B6	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: PF18108	ECOD (1.6)
C	PF04777	e3t58C5	A: alpha bundles	X: Four-helical up-and-down bundle	H: FAD-dependent thiol oxidase (From Topology)	T: FAD-dependent thiol oxidase	F: PF04777	ECOD (1.6)
C	PF18371	e3t58C3	A: alpha bundles	X: Four-helical up-and-down bundle	H: FAD-dependent thiol oxidase (From Topology)	T: FAD-dependent thiol oxidase	F: PF18371	ECOD (1.6)
C	PF00085	e3t58C1	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: PF00085	ECOD (1.6)
C	PF18108	e3t58C6	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: PF18108	ECOD (1.6)
D	PF04777,PF18371	e3t58D2	A: alpha bundles	X: Four-helical up-and-down bundle	H: FAD-dependent thiol oxidase (From Topology)	T: FAD-dependent thiol oxidase	F: PF04777,PF18371	ECOD (1.6)
D	PF00085	e3t58D1	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: PF00085	ECOD (1.6)
D	PF18108	e3t58D3	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: PF18108	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C	3.40.30.10	Alpha Beta	3-Layer(aba) Sandwich	Glutaredoxin	Glutaredoxin	CATH (4.3.0)
C	1.20.120.1960	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	QSOX sulfhydryl oxidase domain	CATH (4.3.0)
C	1.20.120.310	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	ERV/ALR sulfhydryl oxidase domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF18371	Flavin adenine dinucleotide (FAD)-dependent sulfhydryl oxidase (FAD_SOX)	Flavin adenine dinucleotide (FAD)-dependent sulfhydryl oxidase	This is a flavin adenine dinucleotide (FAD) binding domain found in Quiescin sulfhydryl oxidases (QSOX) (EC:1.8.3.2). QSOX is a multi-domain disulfide catalyst that is localized primarily to the Golgi apparatus and secreted fluids and has attracted a ...	This is a flavin adenine dinucleotide (FAD) binding domain found in Quiescin sulfhydryl oxidases (QSOX) (EC:1.8.3.2). QSOX is a multi-domain disulfide catalyst that is localized primarily to the Golgi apparatus and secreted fluids and has attracted attention due to its over-production in tumors. Structural studies indicate that the closure of the Trx1 domain over the FAD-binding site may enhance the active-site chemistry for disulfide formation [1 -3].	Domain
A, B, 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
A, B, C, D	PF18108	QSOX Trx-like domain (QSOX_Trx1)	QSOX Trx-like domain	This domain is found in Quiescin sulfhydryl oxidase (QSOX), an oxidoreductase present in Homo sapiens capable of both generating and transferring disulfide modules within a single polypeptide. The domain is thioredoxin-like, hence referred to as Trx1 ...	This domain is found in Quiescin sulfhydryl oxidase (QSOX), an oxidoreductase present in Homo sapiens capable of both generating and transferring disulfide modules within a single polypeptide. The domain is thioredoxin-like, hence referred to as Trx1 domain. Trx1 domain has a di-cysteine motif (Cys-X-X-Cys) which is related to the redox-active domains of protein disulfide isomerase. The Trx1 domain is responsible for intramolecular disulfide transfer through the di-cysteine motif [1].	Domain
A, B, C, D	PF04777	Erv1 / Alr family (Evr1_Alr)	Erv1 / Alr family	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	Sulfhydryl oxidase 1	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 isomerase activity intramolecular oxidoreductase activity catalytic activity, acting on a protein intramolecular oxidoreductase activity, transposing S-S bonds 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 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 oxidoreductase activity, acting on a sulfur group of donors, oxygen as acceptor protein-disulfide reductase activity flavin-dependent sulfhydryl oxidase activity thiol oxidase activity	organonitrogen compound metabolic process cellular biosynthetic process cellular metabolic process primary metabolic process gene expression macromolecule biosynthetic process protein maturation organic substance metabolic process protein folding biosynthetic process organic substance biosynthetic process metabolic process cellular process protein metabolic process organonitrogen compound metabolic process cellular biosynthetic process cellular metabolic process primary metabolic process gene expression macromolecule biosynthetic process protein maturation organic substance metabolic process protein folding biosynthetic process organic substance biosynthetic process metabolic process cellular process protein metabolic process macromolecule metabolic process cellular component biogenesis cellular component organization cellular component assembly extracellular matrix organization cellular component organization or biogenesis extracellular matrix assembly extracellular structure organization external encapsulating structure organization negative regulation of cellular catabolic process catabolic process regulation of cellular process macroautophagy autophagy negative regulation of biological process regulation of autophagy negative regulation of cellular metabolic process cellular catabolic process negative regulation of cellular process process utilizing autophagic mechanism negative regulation of catabolic process regulation of biological process negative regulation of metabolic process biological regulation regulation of cellular metabolic process regulation of catabolic process negative regulation of macroautophagy regulation of macroautophagy negative regulation of autophagy regulation of cellular catabolic process regulation of metabolic process	intercellular bridge cellular anatomical entity membrane-bounded organelle intracellular organelle intracellular anatomical structure Golgi apparatus organelle cytoplasm intracellular membrane-bounded organelle endomembrane system Golgi membrane membrane bounding membrane of organelle organelle membrane intercellular bridge cellular anatomical entity membrane-bounded organelle intracellular organelle intracellular anatomical structure Golgi apparatus organelle cytoplasm intracellular membrane-bounded organelle endomembrane system Golgi membrane membrane bounding membrane of organelle organelle membrane extracellular exosome extracellular vesicle extracellular organelle extracellular region extracellular space vesicle extracellular membrane-bounded organelle endoplasmic reticulum

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR036774	ERV/ALR sulfhydryl oxidase domain superfamily	Homologous Superfamily
A, B, C, D	IPR013766	Thioredoxin domain	Domain
A, B, C, D	IPR041269	Sulfhydryl oxidase, Trx-like domain	Domain
A, B, C, D	IPR039798	Sulfhydryl oxidase	Family
A, B, C, D	IPR040986	Sulfhydryl oxidase, flavin adenine dinucleotide (FAD) binding domain	Domain
A, B, C, D	IPR042568	Sulfhydryl oxidase, flavin adenine dinucleotide (FAD) binding domain superfamily	Homologous Superfamily
A, B, C, D	IPR017905	ERV/ALR sulfhydryl oxidase domain	Domain
A, B, C, D	IPR036249	Thioredoxin-like superfamily	Homologous Superfamily

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.