3HS0

Cobra Venom Factor (CVF) in complex with human factor B

External Resource: Annotation

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: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
D	SCOP2B Superfamily	Sushi/CCP/SCR domain	8043500	3000902	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Trypsin-like serine proteases	8042311	3000114	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Sushi/CCP/SCR domain	8043502	3000902	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	vWA-like	8042312	3000832	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Sushi/CCP/SCR domain	8043505	3000902	SCOP2B (2022-06-29)
H [auth I]	SCOP2B Superfamily	Sushi/CCP/SCR domain	8043500	3000902	SCOP2B (2022-06-29)
H [auth I]	SCOP2B Superfamily	Trypsin-like serine proteases	8042311	3000114	SCOP2B (2022-06-29)
H [auth I]	SCOP2B Superfamily	vWA-like	8042312	3000832	SCOP2B (2022-06-29)
H [auth I]	SCOP2B Superfamily	Sushi/CCP/SCR domain	8043505	3000902	SCOP2B (2022-06-29)
H [auth I]	SCOP2B Superfamily	Sushi/CCP/SCR domain	8043502	3000902	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	A2M_N_1	e3hs0A4	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: A2M_N_1	ECOD (1.6)
A	KOG1366_2nd_1	e3hs0A2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: KOG1366_2nd_1	ECOD (1.6)
A	MG4	e3hs0A3	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: MG4	ECOD (1.6)
A	KOG1366_1st	e3hs0A5	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: KOG1366_1st	ECOD (1.6)
A	ANATO	e3hs0A6	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: ANATO	ECOD (1.6)
A	A2M_N_2	e3hs0A1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: A2M_N_2	ECOD (1.6)
E [auth F]	A2M_N_1	e3hs0F4	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: A2M_N_1	ECOD (1.6)
E [auth F]	KOG1366_2nd_1	e3hs0F2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: KOG1366_2nd_1	ECOD (1.6)
E [auth F]	MG4	e3hs0F3	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: MG4	ECOD (1.6)
E [auth F]	KOG1366_1st	e3hs0F5	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: KOG1366_1st	ECOD (1.6)
E [auth F]	ANATO	e3hs0F6	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: ANATO	ECOD (1.6)
E [auth F]	A2M_N_2	e3hs0F1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: A2M_N_2	ECOD (1.6)
B	EUF07660	e3hs0B4	A: beta sandwiches	X: jelly-roll	H: Spermadhesin, CUB domain (From Topology)	T: Spermadhesin, CUB domain	F: EUF07660	ECOD (1.6)
B	A2M_C	e3hs0B2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: A2M_C	ECOD (1.6)
B	A2M_N	e3hs0B3	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: A2M_N	ECOD (1.6)
F [auth G]	EUF07660	e3hs0G3	A: beta sandwiches	X: jelly-roll	H: Spermadhesin, CUB domain (From Topology)	T: Spermadhesin, CUB domain	F: EUF07660	ECOD (1.6)
F [auth G]	A2M_C	e3hs0G2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: A2M_C	ECOD (1.6)
F [auth G]	A2M_N	e3hs0G1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: A2M_N	ECOD (1.6)
C	NTR	e3hs0C1	A: beta barrels	X: OB-fold	H: TIMP-like (From Topology)	T: TIMP-like	F: NTR	ECOD (1.6)
C	EUF07663	e3hs0C3	A: beta sandwiches	X: jelly-roll	H: Spermadhesin, CUB domain (From Topology)	T: Spermadhesin, CUB domain	F: EUF07663	ECOD (1.6)
C	A2M_recep	e3hs0C2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Common fold of diphtheria toxin/transcription factors/cytochrome f	F: A2M_recep	ECOD (1.6)
G [auth H]	NTR	e3hs0H2	A: beta barrels	X: OB-fold	H: TIMP-like (From Topology)	T: TIMP-like	F: NTR	ECOD (1.6)
G [auth H]	EUF07663	e3hs0H3	A: beta sandwiches	X: jelly-roll	H: Spermadhesin, CUB domain (From Topology)	T: Spermadhesin, CUB domain	F: EUF07663	ECOD (1.6)
G [auth H]	A2M_recep	e3hs0H1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Common fold of diphtheria toxin/transcription factors/cytochrome f	F: A2M_recep	ECOD (1.6)
D	Trypsin_1	e3hs0D4	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel 2	F: Trypsin_1	ECOD (1.6)
D	VWA	e3hs0D5	A: a/b three-layered sandwiches	X: HAD domain-like	H: HAD domain-related	T: vWA-like	F: VWA	ECOD (1.6)
D	Sushi	e3hs0D6	A: few secondary structure elements	X: EGF-like	H: EGF-related	T: Complement control module/SCR domain	F: Sushi	ECOD (1.6)
D	Sushi_3	e3hs0D3	A: few secondary structure elements	X: EGF-like	H: EGF-related	T: Complement control module/SCR domain	F: Sushi_3	ECOD (1.6)
D	Sushi_1	e3hs0D7	A: few secondary structure elements	X: EGF-like	H: EGF-related	T: Complement control module/SCR domain	F: Sushi_1	ECOD (1.6)
H [auth I]	Trypsin_1	e3hs0I9	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel 2	F: Trypsin_1	ECOD (1.6)
H [auth I]	VWA	e3hs0I8	A: a/b three-layered sandwiches	X: HAD domain-like	H: HAD domain-related	T: vWA-like	F: VWA	ECOD (1.6)
H [auth I]	Sushi	e3hs0I4	A: few secondary structure elements	X: EGF-like	H: EGF-related	T: Complement control module/SCR domain	F: Sushi	ECOD (1.6)
H [auth I]	Sushi_3	e3hs0I3	A: few secondary structure elements	X: EGF-like	H: EGF-related	T: Complement control module/SCR domain	F: Sushi_3	ECOD (1.6)
H [auth I]	Sushi_1	e3hs0I5	A: few secondary structure elements	X: EGF-like	H: EGF-related	T: Complement control module/SCR domain	F: Sushi_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.60.40.1930	Mainly Beta	Sandwich	Immunoglobulin-like	Macroglobulin (MG2) domain	CATH (4.3.0)
A	2.60.40.1940	Mainly Beta	Sandwich	Immunoglobulin-like		CATH (4.3.0)
A	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
A	6.20.50.160	Special	Other non-globular	N-terminal domain of TfIIb		CATH (4.3.0)
E [auth F]	2.60.40.1930	Mainly Beta	Sandwich	Immunoglobulin-like	Macroglobulin (MG2) domain	CATH (4.3.0)
E [auth F]	2.60.40.1940	Mainly Beta	Sandwich	Immunoglobulin-like		CATH (4.3.0)
E [auth F]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
E [auth F]	6.20.50.160	Special	Other non-globular	N-terminal domain of TfIIb		CATH (4.3.0)
B	2.20.130.20	Mainly Beta	Single Sheet	S-adenosyl-L-methionine-dependent methyltransferases		CATH (4.3.0)
B	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
F [auth G]	2.20.130.20	Mainly Beta	Single Sheet	S-adenosyl-L-methionine-dependent methyltransferases		CATH (4.3.0)
F [auth G]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
C	2.20.210.20	Mainly Beta	Single Sheet	ubp-family deubiquitinating enzyme fold		CATH (4.3.0)
C	2.60.40.690	Mainly Beta	Sandwich	Immunoglobulin-like	Alpha-macroglobulin, receptor-binding domain	CATH (4.3.0)
C	2.40.50.120	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)		CATH (4.3.0)
G [auth H]	2.20.210.20	Mainly Beta	Single Sheet	ubp-family deubiquitinating enzyme fold		CATH (4.3.0)
G [auth H]	2.60.40.690	Mainly Beta	Sandwich	Immunoglobulin-like	Alpha-macroglobulin, receptor-binding domain	CATH (4.3.0)
G [auth H]	2.40.50.120	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, E [auth F]	PF17790	Macroglobulin domain MG1 (MG1)	Macroglobulin domain MG1	This entry represents the N-terminal macroglobulin domain found in complement proteins C3, C4 and C5.	Domain
A, E [auth F]	PF17791	Macroglobulin domain MG3 (MG3)	Macroglobulin domain MG3	This entry corresponds to the MG3 domain found in complement components C3, C4 and C5.	Domain
A, E [auth F]	PF01835	MG2 domain (MG2)	MG2 domain	This is the MG2 (macroglobulin) domain of alpha-2-macroglobulin in eukaryotes [1]. Alpha-2-macroglobulins (A2Ms) are plasma proteins that trap and inhibit a broad range of proteases and are major components of the eukaryotic innate immune system. How ...	This is the MG2 (macroglobulin) domain of alpha-2-macroglobulin in eukaryotes [1]. Alpha-2-macroglobulins (A2Ms) are plasma proteins that trap and inhibit a broad range of proteases and are major components of the eukaryotic innate immune system. However, A2M-like proteins were identified in pathogenically invasive bacteria and species that colonize higher eukaryotes. This domain is found in eukaryotic and bacterial proteins. In human A2Ms, this domain is termed macroglobulin-like (MG) domain 2 and in Salmonella enterica ser A2Ms, this is domain 4 [2] [3].	Domain
A, E [auth F]	PF07703	Alpha-2-macroglobulin bait region domain (A2M_BRD)	Alpha-2-macroglobulin bait region domain	Alpha-2-macroglobulins (A2Ms) are plasma proteins that trap and inhibit a broad range of proteases and are major components of the eukaryotic innate immune system. However, A2M-like proteins were identified in pathogenically invasive bacteria and spe ...	Alpha-2-macroglobulins (A2Ms) are plasma proteins that trap and inhibit a broad range of proteases and are major components of the eukaryotic innate immune system. However, A2M-like proteins were identified in pathogenically invasive bacteria and species that colonize higher eukaryotes. This domain is found in eukaryotic and bacterial proteins. In human A2Ms, this domain encompasses macroglobulin-like domain MG5 and 6 including bait region. In Salmonella enterica ser A2Ms, this domain encompasses MG7 and MG8 including the bait region [1] [2]. The Bait region is cleaved by proteases, followed by a large conformational change that blocks the target protease within a cage-like complex. This model of protease entrapment is recognised as the Venus flytrap mechanism [1].	Domain
A, E [auth F]	PF17789	Macroglobulin domain MG4 (MG4)	Macroglobulin domain MG4	This domain is MG4 found in complement C3 and C5 proteins.	Domain
B, F [auth G]	PF00207	Alpha-2-macroglobulin family (A2M)	Alpha-2-macroglobulin family	-	Family
B, F [auth G]	PF21406	Complement component 3, CUB domain, first segment (C3_CUB1)	Complement component 3, CUB domain, first segment	This entry represents the first segment of the CUB domain from complement component C3, which is completed but a second segment represented in Pfam:PF21308. The CUB domain is interrupted by the TE domain. The CUB domain forms a massive, tightly packe ...	This entry represents the first segment of the CUB domain from complement component C3, which is completed but a second segment represented in Pfam:PF21308. The CUB domain is interrupted by the TE domain. The CUB domain forms a massive, tightly packed super domain with the TE and MG8 domains [1-5]. These entry also includes venom factors, also known as Complement C3 homologues. These are complement-activating proteins with structural and functional similarities to complement component C3b, the activated form of C3 [6].	Domain
C, G [auth H]	PF01759	UNC-6/NTR/C345C module (NTR)	UNC-6/NTR/C345C module	Sequence similarity between netrin UNC-6 and C345C complement protein family members, and hence the existence of the UNC-6 module, was first reported in [1]. Subsequently, many additional members of the family were identified on the basis of sequence ...	Sequence similarity between netrin UNC-6 and C345C complement protein family members, and hence the existence of the UNC-6 module, was first reported in [1]. Subsequently, many additional members of the family were identified on the basis of sequence similarity between the C-terminal domains of netrins, complement proteins C3, C4, C5, secreted frizzled-related proteins, and type I pro-collagen C-proteinase enhancer proteins (PCOLCEs), which are homologous with the N-terminal domains of tissue inhibitors of metalloproteinases (TIMPs). The TIMPs are classified as a separate family in Pfam (Pfam:PF00965) [2]. This expanded domain family has been named as the NTR module [2].	Domain
C, G [auth H]	PF07677	A-macroglobulin receptor binding domain (A2M_recep)	A-macroglobulin receptor binding domain	This family includes the receptor binding domain region of the alpha-2-macroglobulin family.	Domain
C, G [auth H]	PF21308	Complement component 3, CUB domain, second segment (C3_CUB2)	Complement component 3, CUB domain, second segment	Complement C3 is major component in the both the classical and alternative complement activation pathways. C3 is cleaved into two chains (alpha and beta) by C3 convertases. This entry represents the second segment of the CUB domain, which is complete ...	Complement C3 is major component in the both the classical and alternative complement activation pathways. C3 is cleaved into two chains (alpha and beta) by C3 convertases. This entry represents the second segment of the CUB domain, which is completed by Pfam:PF21406 [2]. The CUB domain is interrupted by the TE domain. The CUB, TE and MG8 domains form a massive, tightly packed super domain. This entry also includes venom factors, also known as Complement C3 homologues. These are complement-activating proteins with structural and functional similarities to complement component C3b, the activated form of C3 [6].	Domain
D, H [auth I]	PF00092	von Willebrand factor type A domain (VWA)	von Willebrand factor type A domain	-	Domain
D, H [auth I]	PF00084	Sushi repeat (SCR repeat) (Sushi)	Sushi repeat (SCR repeat)	-	Domain
D, H [auth I]	PF00089	Trypsin (Trypsin)	Trypsin	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, E [auth F]	Cobra venom factor	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 toxin activity cation binding ion binding binding metal ion binding small molecule binding	humoral immune response regulation of biological process response to stimulus immune response biological regulation positive regulation of biological process immune effector process positive regulation of response to stimulus complement activation positive regulation of immune response regulation of response to stimulus immune system process regulation of immune response regulation of immune system process humoral immune response regulation of biological process response to stimulus immune response biological regulation positive regulation of biological process immune effector process positive regulation of response to stimulus complement activation positive regulation of immune response regulation of response to stimulus immune system process regulation of immune response regulation of immune system process positive regulation of immune system process activation of immune response defense response response to stress inflammatory response	extracellular region extracellular space cellular anatomical entity
B, F [auth G]	Cobra venom factor	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 toxin activity cation binding ion binding binding metal ion binding small molecule binding	humoral immune response regulation of biological process response to stimulus immune response biological regulation positive regulation of biological process immune effector process positive regulation of response to stimulus complement activation positive regulation of immune response regulation of response to stimulus immune system process regulation of immune response regulation of immune system process humoral immune response regulation of biological process response to stimulus immune response biological regulation positive regulation of biological process immune effector process positive regulation of response to stimulus complement activation positive regulation of immune response regulation of response to stimulus immune system process regulation of immune response regulation of immune system process positive regulation of immune system process activation of immune response defense response response to stress inflammatory response	extracellular region extracellular space cellular anatomical entity
C, G [auth H]	Cobra venom factor	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 toxin activity cation binding ion binding binding metal ion binding small molecule binding	humoral immune response regulation of biological process response to stimulus immune response biological regulation positive regulation of biological process immune effector process positive regulation of response to stimulus complement activation positive regulation of immune response regulation of response to stimulus immune system process regulation of immune response regulation of immune system process humoral immune response regulation of biological process response to stimulus immune response biological regulation positive regulation of biological process immune effector process positive regulation of response to stimulus complement activation positive regulation of immune response regulation of response to stimulus immune system process regulation of immune response regulation of immune system process positive regulation of immune system process activation of immune response defense response response to stress inflammatory response	extracellular region extracellular space cellular anatomical entity
D, H [auth I]	Complement factor B	peptidase activity catalytic activity, acting on a protein serine hydrolase activity serine-type peptidase activity hydrolase activity serine-type endopeptidase activity catalytic activity endopeptidase activity protein binding binding complement binding	biological process involved in interspecies interaction between organisms response to stimulus response to other organism response to bacterium response to external stimulus response to external biotic stimulus response to biotic stimulus humoral immune response positive regulation of biological process complement activation, alternative pathway positive regulation of response to stimulus complement activation positive regulation of immune response response to stress biological process involved in interspecies interaction between organisms response to stimulus response to other organism response to bacterium response to external stimulus response to external biotic stimulus response to biotic stimulus humoral immune response positive regulation of biological process complement activation, alternative pathway positive regulation of response to stimulus complement activation positive regulation of immune response response to stress innate immune response regulation of immune system process positive regulation of immune system process regulation of biological process immune response defense response biological regulation defense response to symbiont immune effector process regulation of response to stimulus immune system process defense response to other organism regulation of immune response activation of immune response proteolysis metabolic process primary metabolic process protein metabolic process macromolecule metabolic process	extracellular region extracellular space cellular anatomical entity blood microparticle extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle organelle vesicle extracellular membrane-bounded organelle cell periphery plasma membrane membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, E [auth F]	IPR019742	Alpha-2-macroglobulin, conserved site	Conserved Site
A, E [auth F]	IPR009048	Alpha-macroglobulin, receptor-binding	Domain
A, E [auth F]	IPR041555	Macroglobulin domain MG3	Domain
A, E [auth F]	IPR049466	Complement component 3, CUB domain, first segment	Domain
A, E [auth F]	IPR001599	Alpha-2-macroglobulin	Domain
A, E [auth F]	IPR047565	Alpha-macroglobulin-like, thiol-ester bond-forming region	Conserved Site
A, E [auth F]	IPR048848	Complement component 3, CUB domain, second segment	Domain
A, E [auth F]	IPR018081	Anaphylatoxin, complement system	Homologous Superfamily
A, E [auth F]	IPR035815	Complement C3-like, NTR domain	Domain
A, E [auth F]	IPR018933	Netrin module, non-TIMP type	Domain
A, E [auth F]	IPR001840	Anaphylatoxin, complement system domain	Domain
A, E [auth F]	IPR041425	Complement C3/4/5, macroglobulin domain MG1	Domain
A, E [auth F]	IPR011625	Alpha-2-macroglobulin, bait region domain	Domain
A, E [auth F]	IPR001134	Netrin domain	Domain
A, E [auth F]	IPR008993	Tissue inhibitor of metalloproteinases-like, OB-fold	Homologous Superfamily
A, E [auth F]	IPR011626	Alpha-macroglobulin-like, TED domain	Domain
A, E [auth F]	IPR000020	Anaphylatoxin/fibulin	Domain
A, E [auth F]	IPR036595	Alpha-macroglobulin, receptor-binding domain superfamily	Homologous Superfamily
A, E [auth F]	IPR002890	Macroglobulin domain	Domain
A, E [auth F]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A, E [auth F]	IPR050473	Alpha-2-macroglobulin/Complement system	Family
A, E [auth F]	IPR008930	Terpenoid cyclases/protein prenyltransferase alpha-alpha toroid	Homologous Superfamily
A, E [auth F]	IPR040839	Macroglobulin domain MG4	Domain
B, F [auth G]	IPR019742	Alpha-2-macroglobulin, conserved site	Conserved Site
B, F [auth G]	IPR009048	Alpha-macroglobulin, receptor-binding	Domain
B, F [auth G]	IPR041555	Macroglobulin domain MG3	Domain
B, F [auth G]	IPR049466	Complement component 3, CUB domain, first segment	Domain
B, F [auth G]	IPR001599	Alpha-2-macroglobulin	Domain
B, F [auth G]	IPR047565	Alpha-macroglobulin-like, thiol-ester bond-forming region	Conserved Site
B, F [auth G]	IPR048848	Complement component 3, CUB domain, second segment	Domain
B, F [auth G]	IPR018081	Anaphylatoxin, complement system	Homologous Superfamily
B, F [auth G]	IPR035815	Complement C3-like, NTR domain	Domain
B, F [auth G]	IPR018933	Netrin module, non-TIMP type	Domain
B, F [auth G]	IPR001840	Anaphylatoxin, complement system domain	Domain
B, F [auth G]	IPR041425	Complement C3/4/5, macroglobulin domain MG1	Domain
B, F [auth G]	IPR011625	Alpha-2-macroglobulin, bait region domain	Domain
B, F [auth G]	IPR001134	Netrin domain	Domain
B, F [auth G]	IPR008993	Tissue inhibitor of metalloproteinases-like, OB-fold	Homologous Superfamily
B, F [auth G]	IPR011626	Alpha-macroglobulin-like, TED domain	Domain
B, F [auth G]	IPR000020	Anaphylatoxin/fibulin	Domain
B, F [auth G]	IPR036595	Alpha-macroglobulin, receptor-binding domain superfamily	Homologous Superfamily
B, F [auth G]	IPR002890	Macroglobulin domain	Domain
B, F [auth G]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
B, F [auth G]	IPR050473	Alpha-2-macroglobulin/Complement system	Family
B, F [auth G]	IPR008930	Terpenoid cyclases/protein prenyltransferase alpha-alpha toroid	Homologous Superfamily
B, F [auth G]	IPR040839	Macroglobulin domain MG4	Domain
C, G [auth H]	IPR019742	Alpha-2-macroglobulin, conserved site	Conserved Site
C, G [auth H]	IPR009048	Alpha-macroglobulin, receptor-binding	Domain
C, G [auth H]	IPR041555	Macroglobulin domain MG3	Domain
C, G [auth H]	IPR049466	Complement component 3, CUB domain, first segment	Domain
C, G [auth H]	IPR001599	Alpha-2-macroglobulin	Domain
C, G [auth H]	IPR047565	Alpha-macroglobulin-like, thiol-ester bond-forming region	Conserved Site
C, G [auth H]	IPR048848	Complement component 3, CUB domain, second segment	Domain
C, G [auth H]	IPR018081	Anaphylatoxin, complement system	Homologous Superfamily
C, G [auth H]	IPR035815	Complement C3-like, NTR domain	Domain
C, G [auth H]	IPR018933	Netrin module, non-TIMP type	Domain
C, G [auth H]	IPR001840	Anaphylatoxin, complement system domain	Domain
C, G [auth H]	IPR041425	Complement C3/4/5, macroglobulin domain MG1	Domain
C, G [auth H]	IPR011625	Alpha-2-macroglobulin, bait region domain	Domain
C, G [auth H]	IPR001134	Netrin domain	Domain
C, G [auth H]	IPR008993	Tissue inhibitor of metalloproteinases-like, OB-fold	Homologous Superfamily
C, G [auth H]	IPR011626	Alpha-macroglobulin-like, TED domain	Domain
C, G [auth H]	IPR000020	Anaphylatoxin/fibulin	Domain
C, G [auth H]	IPR036595	Alpha-macroglobulin, receptor-binding domain superfamily	Homologous Superfamily
C, G [auth H]	IPR002890	Macroglobulin domain	Domain
C, G [auth H]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
C, G [auth H]	IPR050473	Alpha-2-macroglobulin/Complement system	Family
C, G [auth H]	IPR008930	Terpenoid cyclases/protein prenyltransferase alpha-alpha toroid	Homologous Superfamily
C, G [auth H]	IPR040839	Macroglobulin domain MG4	Domain
D, H [auth I]	IPR011360	Complement B/C2	Family
D, H [auth I]	IPR028341	Complement factor B	Family
D, H [auth I]	IPR009003	Peptidase S1, PA clan	Homologous Superfamily
D, H [auth I]	IPR036465	von Willebrand factor A-like domain superfamily	Homologous Superfamily
D, H [auth I]	IPR001314	Peptidase S1A, chymotrypsin family	Family
D, H [auth I]	IPR033116	Serine proteases, trypsin family, serine active site	Active Site
D, H [auth I]	IPR001254	Serine proteases, trypsin domain	Domain
D, H [auth I]	IPR002035	von Willebrand factor, type A	Domain
D, H [auth I]	IPR000436	Sushi/SCR/CCP domain	Domain
D, H [auth I]	IPR018114	Serine proteases, trypsin family, histidine active site	Active Site
D, H [auth I]	IPR035976	Sushi/SCR/CCP superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
D, H [auth I]	Pharos: P00751	age-related macular degeneration complement factor b deficiency atypical hemolytic-uremic syndrome myasthenia gravis atypical hemolytic-uremic syndrome with B factor anomaly systemic lupus erythematosus ulcerative colitis hemolytic-uremic syndrome Libman-Sacks Disease macular degeneration membranous glomerulonephritis ovarian cancer age related macular degeneration 14 retinal degeneration wet macular degeneration age-related macular degeneration complement factor b deficiency atypical hemolytic-uremic syndrome myasthenia gravis atypical hemolytic-uremic syndrome with B factor anomaly systemic lupus erythematosus ulcerative colitis hemolytic-uremic syndrome Libman-Sacks Disease macular degeneration membranous glomerulonephritis ovarian cancer age related macular degeneration 14 retinal degeneration wet macular degeneration cervical cancer Hashimoto thyroiditis hypertensive disorder lung carcinoma neuromyelitis optica psoriasis skin basal cell carcinoma autism spectrum disorder brain injury heart disease non-alcoholic fatty liver disease psoriatic arthritis squamous cell lung carcinoma vitiligo endometriosis hemolytic anemia hepatitis B virus infection