Annotations: 9QEX

Structure of native leukocyte myeloperoxidase in complex with a truncated version of the Staphylococcal Peroxidase Inhibitor SPIN and thiocyanate at pH 7.5

External Resource: Annotation

Domain Annotation: ECOD Classification
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)
E [auth A]	Cofilin_ADF	e9qexA1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: Cofilin_ADF	ECOD (v295)
F [auth C]	Cofilin_ADF	e9qexC1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: Cofilin_ADF	ECOD (v295)
B [auth D]	Cofilin_ADF	e9qexD1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: Cofilin_ADF	ECOD (v295)
A [auth B]	Cofilin_ADF	e9qexB1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: Cofilin_ADF	ECOD (v295)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth B], B [auth D]	PF03098	Animal haem peroxidase (An_peroxidase)	Animal haem peroxidase		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
E [auth A], F [auth C]	Myeloperoxidase light chain	peroxidase activity oxidoreductase activity antioxidant activity oxidoreductase activity, acting on peroxide as acceptor catalytic activity chromatin binding binding tetrapyrrole binding heme binding protein-containing complex destabilizing activity cation binding ion binding metal ion binding small molecule binding peroxidase activity oxidoreductase activity antioxidant activity oxidoreductase activity, acting on peroxide as acceptor catalytic activity chromatin binding binding tetrapyrrole binding heme binding protein-containing complex destabilizing activity cation binding ion binding metal ion binding small molecule binding heparin binding glycosaminoglycan binding carbohydrate derivative binding sulfur compound binding protein-containing complex binding nucleosome binding	catabolic process hydrogen peroxide metabolic process reactive oxygen species metabolic process metabolic process cellular process hydrogen peroxide catabolic process plasma lipoprotein particle organization multicellular organismal process regulation of biological process low-density lipoprotein particle remodeling protein-containing complex organization protein-containing complex remodeling protein-lipid complex organization biological regulation catabolic process hydrogen peroxide metabolic process reactive oxygen species metabolic process metabolic process cellular process hydrogen peroxide catabolic process plasma lipoprotein particle organization multicellular organismal process regulation of biological process low-density lipoprotein particle remodeling protein-containing complex organization protein-containing complex remodeling protein-lipid complex organization biological regulation plasma lipoprotein particle remodeling regulation of plasma lipoprotein particle levels cellular component organization protein-lipid complex remodeling cellular component organization or biogenesis neutrophil-mediated killing of symbiont cell biological process involved in interspecies interaction between organisms response to stimulus neutrophil-mediated killing of fungus disruption of cell in another organism response to biotic stimulus myeloid leukocyte mediated immunity neutrophil mediated immunity response to stress leukocyte mediated immunity response to external biotic stimulus killing of cells of another organism neutrophil mediated cytotoxicity response to other organism defense response response to external stimulus leukocyte mediated cytotoxicity immune effector process defense response to fungus immune system process response to fungus disruption of anatomical structure in another organism cell killing regulation of cellular process negative regulation of programmed cell death regulation of apoptotic process negative regulation of biological process regulation of programmed cell death cell death negative regulation of apoptotic process negative regulation of cellular process apoptotic process programmed cell death defense response to bacterium response to bacterium neutrophil-mediated killing of bacterium cellular component biogenesis cellular component assembly neutrophil extracellular trap formation cellular component disassembly protein-DNA complex disassembly protein-containing complex disassembly protein-DNA complex organization chromatin organization nucleosome disassembly chromatin remodeling nucleosome organization response to transition metal nanoparticle response to gold nanoparticle response to chemical response to mechanical stimulus response to abiotic stimulus response to oxidative stress response to lipid response to oxygen-containing compound response to lipopolysaccharide response to molecule of bacterial origin response to nutrient levels response to food	extracellular exosome membrane-bounded organelle extracellular vesicle cellular anatomical structure extracellular organelle extracellular region organelle vesicle extracellular membrane-bounded organelle intracellular anatomical structure intracellular vesicle phagocytic vesicle intracellular membrane-bounded organelle intracellular organelle extracellular exosome membrane-bounded organelle extracellular vesicle cellular anatomical structure extracellular organelle extracellular region organelle vesicle extracellular membrane-bounded organelle intracellular anatomical structure intracellular vesicle phagocytic vesicle intracellular membrane-bounded organelle intracellular organelle cytoplasmic vesicle cytoplasm endocytic vesicle endomembrane system secretory granule secretory vesicle lytic vacuole membrane-enclosed lumen cytoplasmic vesicle lumen vacuolar lumen intracellular organelle lumen lysosome vesicle lumen azurophil granule vacuole secretory granule lumen azurophil granule lumen organelle lumen primary lysosome phagocytic vesicle lumen endocytic vesicle lumen membraneless organelle extracellular membraneless organelle neutrophil extracellular trap nucleus
C [auth E], D [auth F]	Myeloperoxidase inhibitor SPIN	enzyme regulator activity molecular function inhibitor activity molecular function regulator activity peroxidase inhibitor activity enzyme inhibitor activity	symbiont-mediated perturbation of host defense response biological process involved in interspecies interaction between organisms response to stimulus response to other organism symbiont-mediated perturbation of host immune response symbiont-mediated response to host defenses response to external stimulus biological process involved in interaction with host response to biotic stimulus biological process involved in symbiotic interaction symbiont-mediated perturbation of host process response to host immune response symbiont-mediated evasion of host immune response response to host symbiont-mediated perturbation of host defense response biological process involved in interspecies interaction between organisms response to stimulus response to other organism symbiont-mediated perturbation of host immune response symbiont-mediated response to host defenses response to external stimulus biological process involved in interaction with host response to biotic stimulus biological process involved in symbiotic interaction symbiont-mediated perturbation of host process response to host immune response symbiont-mediated evasion of host immune response response to host response to external biotic stimulus modulation of process of another organism	host intracellular membrane-bounded organelle host cellular component host intracellular part other organism part host cell cytoplasm part host intracellular organelle host cell cytoplasmic vesicle cellular anatomical structure host cell cytoplasm host cell part host intracellular region
A [auth B], B [auth D]	Myeloperoxidase heavy chain	peroxidase activity oxidoreductase activity antioxidant activity oxidoreductase activity, acting on peroxide as acceptor catalytic activity chromatin binding binding tetrapyrrole binding heme binding protein-containing complex destabilizing activity cation binding ion binding metal ion binding small molecule binding peroxidase activity oxidoreductase activity antioxidant activity oxidoreductase activity, acting on peroxide as acceptor catalytic activity chromatin binding binding tetrapyrrole binding heme binding protein-containing complex destabilizing activity cation binding ion binding metal ion binding small molecule binding heparin binding glycosaminoglycan binding carbohydrate derivative binding sulfur compound binding protein-containing complex binding nucleosome binding	catabolic process hydrogen peroxide metabolic process reactive oxygen species metabolic process metabolic process cellular process hydrogen peroxide catabolic process plasma lipoprotein particle organization multicellular organismal process regulation of biological process low-density lipoprotein particle remodeling protein-containing complex organization protein-containing complex remodeling protein-lipid complex organization biological regulation catabolic process hydrogen peroxide metabolic process reactive oxygen species metabolic process metabolic process cellular process hydrogen peroxide catabolic process plasma lipoprotein particle organization multicellular organismal process regulation of biological process low-density lipoprotein particle remodeling protein-containing complex organization protein-containing complex remodeling protein-lipid complex organization biological regulation plasma lipoprotein particle remodeling regulation of plasma lipoprotein particle levels cellular component organization protein-lipid complex remodeling cellular component organization or biogenesis neutrophil-mediated killing of symbiont cell biological process involved in interspecies interaction between organisms response to stimulus neutrophil-mediated killing of fungus disruption of cell in another organism response to biotic stimulus myeloid leukocyte mediated immunity neutrophil mediated immunity response to stress leukocyte mediated immunity response to external biotic stimulus killing of cells of another organism neutrophil mediated cytotoxicity response to other organism defense response response to external stimulus leukocyte mediated cytotoxicity immune effector process defense response to fungus immune system process response to fungus disruption of anatomical structure in another organism cell killing regulation of cellular process negative regulation of programmed cell death regulation of apoptotic process negative regulation of biological process regulation of programmed cell death cell death negative regulation of apoptotic process negative regulation of cellular process apoptotic process programmed cell death defense response to bacterium response to bacterium neutrophil-mediated killing of bacterium cellular component biogenesis cellular component assembly neutrophil extracellular trap formation cellular component disassembly protein-DNA complex disassembly protein-containing complex disassembly protein-DNA complex organization chromatin organization nucleosome disassembly chromatin remodeling nucleosome organization response to transition metal nanoparticle response to gold nanoparticle response to chemical response to mechanical stimulus response to abiotic stimulus response to oxidative stress response to lipid response to oxygen-containing compound response to lipopolysaccharide response to molecule of bacterial origin response to nutrient levels response to food	extracellular exosome membrane-bounded organelle extracellular vesicle cellular anatomical structure extracellular organelle extracellular region organelle vesicle extracellular membrane-bounded organelle intracellular anatomical structure intracellular vesicle phagocytic vesicle intracellular membrane-bounded organelle intracellular organelle extracellular exosome membrane-bounded organelle extracellular vesicle cellular anatomical structure extracellular organelle extracellular region organelle vesicle extracellular membrane-bounded organelle intracellular anatomical structure intracellular vesicle phagocytic vesicle intracellular membrane-bounded organelle intracellular organelle cytoplasmic vesicle cytoplasm endocytic vesicle endomembrane system secretory granule secretory vesicle lytic vacuole membrane-enclosed lumen cytoplasmic vesicle lumen vacuolar lumen intracellular organelle lumen lysosome vesicle lumen azurophil granule vacuole secretory granule lumen azurophil granule lumen organelle lumen primary lysosome phagocytic vesicle lumen endocytic vesicle lumen membraneless organelle extracellular membraneless organelle neutrophil extracellular trap nucleus

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
E [auth A], F [auth C]	IPR019791	Haem peroxidase, animal-type	Family
E [auth A], F [auth C]	IPR037120	Haem peroxidase domain superfamily, animal type	Homologous Superfamily
E [auth A], F [auth C]	IPR010255	Haem peroxidase superfamily	Homologous Superfamily
A [auth B], B [auth D]	IPR019791	Haem peroxidase, animal-type	Family
A [auth B], B [auth D]	IPR037120	Haem peroxidase domain superfamily, animal type	Homologous Superfamily
A [auth B], B [auth D]	IPR010255	Haem peroxidase superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
E [auth A], F [auth C]	: P05164	myeloperoxidase deficiency Alzheimer disease colitis trichuriasis kidney disease rheumatoid arthritis ulcerative colitis major depressive disorder pancreatitis Inflammation brain ischemia keratosis alcoholic liver cirrhosis urinary bladder cancer brain disease myeloperoxidase deficiency Alzheimer disease colitis trichuriasis kidney disease rheumatoid arthritis ulcerative colitis major depressive disorder pancreatitis Inflammation brain ischemia keratosis alcoholic liver cirrhosis urinary bladder cancer brain disease prostate cancer cardiovascular disease urticaria extrahepatic cholestasis hypertensive disorder precancerous condition prostate carcinoma sarcoidosis social phobia lung benign neoplasm Alzheimer disease type 1 vasculitis generalized anxiety disorder osteosarcoma panic disorder autoimmune disease cancer ischemia reperfusion injury colorectal cancer leprosy depressive disorder lung disease tuberculosis lymphoplasmacytic lymphoma urinary bladder neoplasm gastroesophageal reflux disease obsessive-compulsive disorder hepatocellular carcinoma post-traumatic stress disorder brain injury injury burn skin disease acute kidney failure dermatitis herpetiformis dilated cardiomyopathy
A [auth B], B [auth D]	: P05164	myeloperoxidase deficiency Alzheimer disease colitis trichuriasis kidney disease rheumatoid arthritis ulcerative colitis major depressive disorder pancreatitis Inflammation brain ischemia keratosis alcoholic liver cirrhosis urinary bladder cancer brain disease myeloperoxidase deficiency Alzheimer disease colitis trichuriasis kidney disease rheumatoid arthritis ulcerative colitis major depressive disorder pancreatitis Inflammation brain ischemia keratosis alcoholic liver cirrhosis urinary bladder cancer brain disease prostate cancer cardiovascular disease urticaria extrahepatic cholestasis hypertensive disorder precancerous condition prostate carcinoma sarcoidosis social phobia lung benign neoplasm Alzheimer disease type 1 vasculitis generalized anxiety disorder osteosarcoma panic disorder autoimmune disease cancer ischemia reperfusion injury colorectal cancer leprosy depressive disorder lung disease tuberculosis lymphoplasmacytic lymphoma urinary bladder neoplasm gastroesophageal reflux disease obsessive-compulsive disorder hepatocellular carcinoma post-traumatic stress disorder brain injury injury burn skin disease acute kidney failure dermatitis herpetiformis dilated cardiomyopathy

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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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.