Annotations: 1NT0

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1nt0a1	All beta proteins	CUB-like	Spermadhesin, CUB domain	Spermadhesin, CUB domain	Mannose-binding protein associated serine protease 2, MASP2	Norway rat (Rattus norvegicus ) [TaxId: 10116 ],	SCOPe (2.08)
A	d1nt0a3	Small proteins	Knottins (small inhibitors, toxins, lectins)	EGF/Laminin	EGF-type module	Mannose-binding protein associated serine protease 2, MASP2	Norway rat (Rattus norvegicus ) [TaxId: 10116 ],	SCOPe (2.08)
B [auth G]	d1nt0g1	All beta proteins	CUB-like	Spermadhesin, CUB domain	Spermadhesin, CUB domain	Mannose-binding protein associated serine protease 2, MASP2	Norway rat (Rattus norvegicus ) [TaxId: 10116 ],	SCOPe (2.08)
B [auth G]	d1nt0g3	Small proteins	Knottins (small inhibitors, toxins, lectins)	EGF/Laminin	EGF-type module	Mannose-binding protein associated serine protease 2, MASP2	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	SCOP2 Family	spermadhesin cub domain	8021203	4002562	SCOP2 (2022-06-29)
A	SCOP2 Family	spermadhesin cub domain	8021204	4002562	SCOP2 (2022-06-29)
A	SCOP2 Family	EGF-type module	8021205	4003198	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Spermadhesin CUB domain	8033583	3001412	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Spermadhesin CUB domain	8033584	3001412	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	EGF/Laminin-like	8033585	3000412	SCOP2 (2022-06-29)
B [auth G]	SCOP2B Superfamily	Spermadhesin CUB domain	8033583	3001412	SCOP2B (2022-06-29)
B [auth G]	SCOP2B Superfamily	Spermadhesin CUB domain	8033584	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	PF00431	e1nt0A1	A: beta sandwiches	X: jelly-roll	H: Spermadhesin, CUB domain (From Topology)	T: Spermadhesin, CUB domain	F: PF00431	ECOD (1.6)
A	PF07645	e1nt0A5	A: few secondary structure elements	X: EGF-like	H: EGF-related	T: EGF/Laminin	F: PF07645	ECOD (1.6)
B [auth G]	PF00431	e1nt0G2	A: beta sandwiches	X: jelly-roll	H: Spermadhesin, CUB domain (From Topology)	T: Spermadhesin, CUB domain	F: PF00431	ECOD (1.6)
B [auth G]	PF07645	e1nt0G5	A: few secondary structure elements	X: EGF-like	H: EGF-related	T: EGF/Laminin	F: PF07645	ECOD (1.6)

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 G]	2.60.120.290	Mainly Beta	Sandwich	Jelly Rolls	Spermadhesin, CUB domain	CATH (4.3.0)
B [auth G]	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 G]	PF07645	Calcium-binding EGF domain (EGF_CA)	Calcium-binding EGF domain	-	Domain
A, B [auth G]	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 G]	mannose-binding protein associated serine protease-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 organic substance metabolic process organonitrogen compound metabolic process proteolysis metabolic process primary metabolic process protein metabolic process macromolecule metabolic process	extracellular region extracellular space cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

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

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
A, B [auth G]	AHB	Parent Component: ASN RESID: AA0026 , AA0478 PSI-MOD : (2S,3R)-3-hydroxyasparagine MOD:00035 , (2S,3S)-3-hydroxyasparagine MOD:01401

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.