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)
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)
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)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
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)
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)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B [auth D]	CUB	e5cknD1	A: beta sandwiches	X: jelly-roll	H: Spermadhesin, CUB domain (From Topology)	T: Spermadhesin, CUB domain	F: CUB	ECOD (1.6)
B [auth D]	EGF_CA	e5cknD3	A: few secondary structure elements	X: EGF-like	H: EGF-related	T: EGF/Laminin	F: EGF_CA	ECOD (1.6)
A	CUB	e5cknA1	A: beta sandwiches	X: jelly-roll	H: Spermadhesin, CUB domain (From Topology)	T: Spermadhesin, CUB domain	F: CUB	ECOD (1.6)
A	EGF_CA	e5cknA3	A: few secondary structure elements	X: EGF-like	H: EGF-related	T: EGF/Laminin	F: EGF_CA	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
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)
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)

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 calcium-dependent protein binding serine hydrolase activity serine-type peptidase activity serine-type endopeptidase activity endopeptidase 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 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 proteolysis metabolic process cellular process primary metabolic process protein metabolic process macromolecule metabolic process	cellular anatomical structure 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]	IPR009003	Peptidase S1, PA clan	Homologous Superfamily
A, B [auth D]	IPR018097	EGF-like calcium-binding, conserved site	Conserved Site
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]	IPR035914	Spermadhesin, CUB domain superfamily	Homologous Superfamily
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]	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 clan, chymotrypsin-like fold	Homologous Superfamily
A, B [auth D]	IPR024175	Peptidase S1A, complement C1r/C1S/mannan-binding	Family
A, B [auth D]	IPR035976	Sushi/SCR/CCP superfamily	Homologous Superfamily

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.