5CKN | pdb_00005ckn

The CUB1-EGF-CUB2 domains of rat MBL-associated serine protease-2 (MASP-2) bound to Ca2+

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

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d5ckna1	All beta proteins	CUB-like	Spermadhesin, CUB domain	Spermadhesin, CUB domain	automated matches	norway Rat (Rattus norvegicus ) [TaxId: 10116 ],	SCOPe (2.08)
A	d5ckna2	Small proteins	Knottins (small inhibitors, toxins, lectins)	EGF/Laminin	automated matches	automated matches	norway Rat (Rattus norvegicus ) [TaxId: 10116 ],	SCOPe (2.08)
B [auth D]	d5cknd1	All beta proteins	CUB-like	Spermadhesin, CUB domain	Spermadhesin, CUB domain	automated matches	norway Rat (Rattus norvegicus ) [TaxId: 10116 ],	SCOPe (2.08)
B [auth D]	d5cknd2	Small proteins	Knottins (small inhibitors, toxins, lectins)	EGF/Laminin	automated matches	automated matches	norway Rat (Rattus norvegicus ) [TaxId: 10116 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Spermadhesin, CUB domain	8033584	3001412	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Spermadhesin, CUB domain	8033583	3001412	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	EGF/Laminin-like	8033585	3000412	SCOP2B (2022-06-29)
B [auth D]	SCOP2B Superfamily	EGF/Laminin-like	8033585	3000412	SCOP2B (2022-06-29)
B [auth D]	SCOP2B Superfamily	Spermadhesin, CUB domain	8033584	3001412	SCOP2B (2022-06-29)
B [auth D]	SCOP2B Superfamily	Spermadhesin, CUB domain	8033583	3001412	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		e5cknA1	A: HSP20-like	X: profilin-like	H: C-terminal domain in DHH phosphoesterases	T: PemK_toxin	F:	ECOD (20:10:01)
B [auth D]		e5cknD1	A: HSP20-like	X: profilin-like	H: C-terminal domain in DHH phosphoesterases	T: PemK_toxin	F:	ECOD (20:10:01)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.60.120.290	Mainly Beta	Sandwich	Jelly Rolls	Spermadhesin, CUB domain	CATH (4.3.0)
A	2.10.25.10	Mainly Beta	Ribbon	Laminin	Laminin	CATH (4.3.0)
B [auth D]	2.60.120.290	Mainly Beta	Sandwich	Jelly Rolls	Spermadhesin, CUB domain	CATH (4.3.0)
B [auth D]	2.10.25.10	Mainly Beta	Ribbon	Laminin	Laminin	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B [auth D]	PF07645	Calcium-binding EGF domain (EGF_CA)	Calcium-binding EGF domain		Domain
A, B [auth D]	PF00431	CUB domain (CUB)	CUB domain		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B [auth D]	Mannan-binding lectin serine peptidase 2	cation binding ion binding binding calcium ion binding metal ion binding small molecule binding opsonin binding protein binding complement component C4b binding complement binding peptidase activity catalytic activity, acting on a protein hydrolase activity catalytic activity cation binding ion binding binding calcium ion binding metal ion binding small molecule binding opsonin binding protein binding complement component C4b binding complement binding peptidase activity catalytic activity, acting on a protein hydrolase activity catalytic activity serine hydrolase activity serine-type peptidase activity serine-type endopeptidase activity endopeptidase activity calcium-dependent protein binding identical protein binding	import into cell transport establishment of localization vesicle-mediated transport immune effector process phagocytosis, recognition opsonization localization immune system process phagocytosis cellular process cell recognition endocytosis adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains import into cell transport establishment of localization vesicle-mediated transport immune effector process phagocytosis, recognition opsonization localization immune system process phagocytosis cellular process cell recognition endocytosis 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 regulation of response to stimulus B cell mediated immunity regulation of immune response activation of immune response biological process involved in interspecies interaction between organisms response to biotic stimulus response to stress innate immune response response to external biotic stimulus complement activation, lectin pathway response to other organism defense response defense response to symbiont response to external stimulus defense response to other organism disruption of cell in another organism disruption of anatomical structure in another organism killing of cells of another organism cell killing biosynthetic process metabolic process primary metabolic process protein metabolic process macromolecule metabolic process gene expression macromolecule biosynthetic process protein maturation activation of membrane attack complex zymogen activation proteolysis protein processing	cellular anatomical structure other organism part symbiont cell surface extracellular region extracellular space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B [auth D]	IPR049883	NOTCH1, EGF-like calcium-binding domain	Domain
A, B [auth D]	IPR018097	EGF-like calcium-binding, conserved site	Conserved Site
A, B [auth D]	IPR035914	Spermadhesin, CUB domain superfamily	Homologous Superfamily
A, B [auth D]	IPR000436	Sushi/SCR/CCP domain	Domain
A, B [auth D]	IPR000859	CUB domain	Domain
A, B [auth D]	IPR000742	EGF-like domain	Domain
A, B [auth D]	IPR043504	Peptidase_S1_PA_chymotrypsin	Unknown
A, B [auth D]	IPR035976	Sushi/SCR/CCP superfamily	Homologous Superfamily
A, B [auth D]	IPR009003	Peptidase S1, PA clan	Homologous Superfamily
A, B [auth D]	IPR001314	Peptidase S1A, chymotrypsin family	Family
A, B [auth D]	IPR033116	Serine proteases, trypsin family, serine active site	Active Site
A, B [auth D]	IPR001254	Serine proteases, trypsin domain	Domain
A, B [auth D]	IPR001881	EGF-like calcium-binding domain	Domain
A, B [auth D]	IPR024175	Peptidase S1A, complement C1r/C1S/mannan-binding	Family

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.