9RXI | pdb_00009rxi

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
E [auth H], F [auth E]	Heavy Chain	IGHV1	-	cathepsin d (a01 family)	SAbDab (2026-02-06)

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF07966	A1 Propeptide (A1_Propeptide)	A1 Propeptide	-	Motif
A, B, C, D	PF00026	Eukaryotic aspartyl protease (Asp)	Eukaryotic aspartyl protease	Aspartyl (acid) proteases include pepsins, cathepsins, and renins. Two-domain structure, probably arising from ancestral duplication. This family does not include the retroviral nor retrotransposon proteases (Pfam:PF00077), which are much smaller a ...	Aspartyl (acid) proteases include pepsins, cathepsins, and renins. Two-domain structure, probably arising from ancestral duplication. This family does not include the retroviral nor retrotransposon proteases (Pfam:PF00077), which are much smaller and appear to be homologous to a single domain of the eukaryotic asp proteases.	Domain

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
E [auth H], F [auth E]	Nb_10C9	-	-	-
A, B, C, D	Cathepsin D (A01 family)	aspartic-type peptidase activity peptidase activity catalytic activity, acting on a protein hydrolase activity aspartic-type endopeptidase activity catalytic activity endopeptidase activity	proteolysis metabolic process cellular process primary metabolic process protein metabolic process macromolecule metabolic process	-

Chains	Accession	Name	Type
A, B, C, D	IPR001461	Aspartic peptidase A1	Family
A, B, C, D	IPR012848	Aspartic peptidase, N-terminal	Domain
A, B, C, D	IPR033121	Peptidase family A1 domain	Domain
A, B, C, D	IPR021109	Aspartic peptidase domain superfamily	Homologous Superfamily
A, B, C, D	IPR001969	Aspartic peptidase, active site	Active Site