3LLK

Sulfhydryl Oxidase Fragment of Human QSOX1

External Resource: Annotation

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

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	KOG1731_2nd	e3llkA1	A: alpha bundles	X: Four-helical up-and-down bundle	H: FAD-dependent thiol oxidase (From Topology)	T: FAD-dependent thiol oxidase	F: KOG1731_2nd	ECOD (1.6)
B	KOG1731_2nd	e3llkB1	A: alpha bundles	X: Four-helical up-and-down bundle	H: FAD-dependent thiol oxidase (From Topology)	T: FAD-dependent thiol oxidase	F: KOG1731_2nd	ECOD (1.6)
C	KOG1731_2nd	e3llkC1	A: alpha bundles	X: Four-helical up-and-down bundle	H: FAD-dependent thiol oxidase (From Topology)	T: FAD-dependent thiol oxidase	F: KOG1731_2nd	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.20.120.1960	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	QSOX sulfhydryl oxidase domain	CATH (4.3.0)
A	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)
B	1.20.120.1960	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	QSOX sulfhydryl oxidase domain	CATH (4.3.0)
B	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)
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	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	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	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	cellular biosynthetic process cellular metabolic process primary metabolic process gene expression macromolecule biosynthetic process protein maturation protein folding biosynthetic process metabolic process cellular process protein metabolic process macromolecule metabolic process negative regulation of cellular catabolic process catabolic process cellular biosynthetic process cellular metabolic process primary metabolic process gene expression macromolecule biosynthetic process protein maturation protein folding biosynthetic process metabolic process cellular process protein metabolic process macromolecule metabolic process 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 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	extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle extracellular space cellular anatomical entity vesicle extracellular membrane-bounded organelle intracellular organelle intracellular anatomical structure intracellular membrane-bounded organelle intercellular bridge extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle extracellular space cellular anatomical entity vesicle extracellular membrane-bounded organelle intracellular organelle intracellular anatomical structure intracellular membrane-bounded organelle intercellular bridge tertiary granule lumen membrane-enclosed lumen intracellular vesicle endomembrane system intracellular organelle lumen tertiary granule organelle lumen cytoplasmic vesicle secretory granule secretory vesicle cytoplasm Golgi apparatus endoplasmic reticulum lumen endoplasmic reticulum Golgi membrane membrane bounding membrane of organelle organelle membrane vesicle lumen cytoplasmic vesicle lumen secretory granule lumen platelet alpha granule platelet alpha granule lumen specific granule lumen specific granule

InterPro: Protein Family Classification InterPro Database Homepage

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

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B, C	Pharos: O00391	pancreatic intraductal papillary-mucinous carcinoma Prescription Drug Abuse spina bifida substance dependence atypical teratoid rhabdoid tumor Crohn disease interstitial cystitis lung carcinoma malignant mesothelioma osteosarcoma pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia primitive neuroectodermal tumor substance abuse breast cancer ulcerative colitis pancreatic intraductal papillary-mucinous carcinoma Prescription Drug Abuse spina bifida substance dependence atypical teratoid rhabdoid tumor Crohn disease interstitial cystitis lung carcinoma malignant mesothelioma osteosarcoma pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia primitive neuroectodermal tumor substance abuse breast cancer ulcerative colitis invasive ductal breast carcinoma malignant ependymoma medulloblastoma pancreatic ductal adenocarcinoma pilocytic astrocytoma psoriasis substance-related disorder breast fibroadenoma drug dependence glioblastoma large cell medulloblastoma malignant glioma

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.