1HZF

C4ADG FRAGMENT OF HUMAN COMPLEMENT FACTOR C4A

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)
A	d1hzfa_	All alpha proteins	alpha/alpha toroid	Terpenoid cyclases/Protein prenyltransferases	Complement components	C4adg fragment of complement factor C4a	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)
A	SCOP2 Family	Complement components	8030062	4001197	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Terpenoid cyclases/Protein prenyltransferases	8042441	3001024	SCOP2 (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	PF07678	e1hzfA1	A: alpha superhelices	X: Repetitive alpha hairpins	H: alpha/alpha toroid (From Topology)	T: alpha/alpha toroid	F: PF07678	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.50.10.20	Mainly Alpha	Alpha/alpha barrel	Glycosyltransferase		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF07678	A-macroglobulin TED domain (TED_complement)	A-macroglobulin TED domain	-	Repeat

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	COMPLEMENT FACTOR C4A	complement component C1q complex binding opsonin binding protein-containing complex binding protein binding binding complement binding enzyme regulator activity molecular function inhibitor activity peptidase regulator activity molecular function regulator activity enzyme inhibitor activity peptidase inhibitor activity endopeptidase regulator activity endopeptidase inhibitor activity	adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains lymphocyte mediated immunity humoral immune response response to stimulus positive regulation of biological process positive regulation of response to stimulus complement activation humoral immune response mediated by circulating immunoglobulin positive regulation of immune response leukocyte mediated immunity regulation of immune system process positive regulation of immune system process complement activation, classical pathway regulation of biological process adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains lymphocyte mediated immunity humoral immune response response to stimulus positive regulation of biological process positive regulation of response to stimulus complement activation humoral immune response mediated by circulating immunoglobulin positive regulation of immune response leukocyte mediated immunity regulation of immune system process positive regulation of immune system process complement activation, classical pathway regulation of biological process immune response biological regulation immunoglobulin mediated immune response adaptive immune response immune effector process regulation of response to stimulus immune system process B cell mediated immunity regulation of immune response activation of immune response biological process involved in interspecies interaction between organisms response to other organism defense response defense response to symbiont response to external stimulus response to biotic stimulus defense response to other organism response to stress innate immune response response to external biotic stimulus inflammatory response import into cell regulation of localization positive regulation of cellular component organization regulation of cellular process regulation of cellular component organization transport positive regulation of apoptotic cell clearance vesicle-mediated transport cellular component organization localization positive regulation of endocytosis phagocytosis apoptotic cell clearance cellular component organization or biogenesis positive regulation of cellular process regulation of endocytosis regulation of transport regulation of phagocytosis regulation of vesicle-mediated transport establishment of localization positive regulation of phagocytosis positive regulation of transport cellular process endocytosis regulation of apoptotic cell clearance	extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle extracellular space cellular anatomical entity vesicle extracellular membrane-bounded organelle cell periphery plasma membrane membrane somatodendritic compartment extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle extracellular space cellular anatomical entity vesicle extracellular membrane-bounded organelle cell periphery plasma membrane membrane somatodendritic compartment cell projection dendrite dendritic tree neuron projection plasma membrane bounded cell projection blood microparticle intracellular anatomical structure membrane-enclosed lumen intracellular membrane-bounded organelle endomembrane system intracellular organelle lumen endoplasmic reticulum lumen intracellular organelle organelle lumen endoplasmic reticulum cytoplasm synapse cell junction cell body neuronal cell body axon

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR019742	Alpha-2-macroglobulin, conserved site	Conserved Site
A	IPR009048	Alpha-macroglobulin, receptor-binding	Domain
A	IPR041555	Macroglobulin domain MG3	Domain
A	IPR001599	Alpha-2-macroglobulin	Domain
A	IPR047565	Alpha-macroglobulin-like, thiol-ester bond-forming region	Conserved Site
A	IPR018081	Anaphylatoxin, complement system	Homologous Superfamily
A	IPR018933	Netrin module, non-TIMP type	Domain
A	IPR001840	Anaphylatoxin, complement system domain	Domain
A	IPR011625	Alpha-2-macroglobulin, bait region domain	Domain
A	IPR001134	Netrin domain	Domain
A	IPR008993	Tissue inhibitor of metalloproteinases-like, OB-fold	Homologous Superfamily
A	IPR011626	Alpha-macroglobulin-like, TED domain	Domain
A	IPR000020	Anaphylatoxin/fibulin	Domain
A	IPR036595	Alpha-macroglobulin, receptor-binding domain superfamily	Homologous Superfamily
A	IPR002890	Macroglobulin domain	Domain
A	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A	IPR008930	Terpenoid cyclases/protein prenyltransferase alpha-alpha toroid	Homologous Superfamily
A	IPR048847	Complement C4, MG1 domain	Domain
A	IPR040839	Macroglobulin domain MG4	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: P0C0L4	systemic lupus erythematosus complement component 4a deficiency primary immunodeficiency disease sarcoidosis age-related macular degeneration autism spectrum disorder cervical cancer endometriosis hepatitis B virus infection membranous glomerulonephritis schizophrenia ulcerative colitis Antibody Deficiency Syndrome autosomal systemic lupus erythematosus type 16 Hashimoto thyroiditis systemic lupus erythematosus complement component 4a deficiency primary immunodeficiency disease sarcoidosis age-related macular degeneration autism spectrum disorder cervical cancer endometriosis hepatitis B virus infection membranous glomerulonephritis schizophrenia ulcerative colitis Antibody Deficiency Syndrome autosomal systemic lupus erythematosus type 16 Hashimoto thyroiditis lung carcinoma neuromyelitis optica psoriatic arthritis squamous cell lung carcinoma wet macular degeneration atopic eczema Behcet disease complement component 4b deficiency heart disease lupus erythematosus non-alcoholic fatty liver disease

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 R01GM133198.