Annotations: 7JGJ

IgA1 Protease in complex with neutralizing mAb

External Resource: Annotation

Domain Annotation: ECOD Classification
IMGT Antibody Annotation
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
C [auth H]	UCR_14kD	e7jgjH1	A: alpha arrays	X: putative RnfG subunit of electron transport complex	H: putative RnfG subunit of electron transport complex	T: Aspartate/ornithine carbamoyltransferase	F: UCR_14kD	ECOD (v295.2)
B [auth L]	UCR_14kD	e7jgjL1	A: alpha arrays	X: putative RnfG subunit of electron transport complex	H: putative RnfG subunit of electron transport complex	T: Aspartate/ornithine carbamoyltransferase	F: UCR_14kD	ECOD (v295.2)

IMGT Antibody Annotation IMGT Database Homepage

Chain	Protein Name	Description	Organism Name	Gene Allele Name(s)	Domain Name(s)	Receptor Type	Receptor Description	Provenance Source
C [auth H]	Antibody Fab fragment	VH-CH1	Mus musculus (house mouse)	IGHV1-4201, IGHJ401, IGHG1*02	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-1_KAPPA	IMGT (202636-0)
B [auth L]	Antibody Fab fragment	L-KAPPA	Mus musculus (house mouse)	IGKV4-6301, IGKJ401, IGKC01, IGKC02	V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA	IG	FAB-GAMMA-1_KAPPA	IMGT (202636-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
C [auth H]	Heavy Chain	IGHV1	-	immunoglobulin a1 protease	SAbDab (2026-09-18)
B [auth L]	Light Chain	IGKV4	Kappa	immunoglobulin a1 protease	SAbDab (2026-09-18)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF07581	The GLUG motif (Glug)	The GLUG motif	-	Family
A	PF07580	M26 IgA1-specific Metallo-endopeptidase C-terminal region (Peptidase_M26_C)	M26 IgA1-specific Metallo-endopeptidase C-terminal region	-	Family
A	PF05342	M26 IgA1-specific Metallo-endopeptidase N-terminal region (Peptidase_M26_N)	M26 IgA1-specific Metallo-endopeptidase N-terminal region	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C [auth H]	mAB Heavy Chain	-	-	-
B [auth L]	mAB Light Chain	-	-	-
A	Immunoglobulin A1 protease	cation binding transition metal ion binding zinc ion binding ion binding binding metal ion binding small molecule binding peptidase activity catalytic activity, acting on a protein metalloendopeptidase activity hydrolase activity metallopeptidase activity catalytic activity endopeptidase activity	-	cellular anatomical structure membrane extracellular region

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR011505	Peptidase M26, C-terminal domain	Domain
A	IPR008006	Peptidase M26, N-terminal domain	Domain
A	IPR011493	GLUG	Domain
A	IPR005877	YSIRK Gram-positive signal peptide	Domain
A	IPR011098	G5 domain	Domain
A	IPR019931	LPXTG cell wall anchor motif	Conserved Site