Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
AInhibitor_I9e5vl7A1 A: a+b two layersX: Alpha-beta plaitsH: Protease propeptides/inhibitors (From Topology)T: Protease propeptides/inhibitorsF: Inhibitor_I9ECOD (1.6)
BPCSK9_C-CRD_2nde5vl7B3 A: beta duplicates or obligate multimersX: Resistin (From Topology)H: Resistin (From Topology)T: ResistinF: PCSK9_C-CRD_2ndECOD (1.6)
BPCSK9_C-CRD_1ste5vl7B2 A: beta duplicates or obligate multimersX: Resistin (From Topology)H: Resistin (From Topology)T: ResistinF: PCSK9_C-CRD_1stECOD (1.6)
BPCSK9_C-CRD_3rde5vl7B1 A: beta duplicates or obligate multimersX: Resistin (From Topology)H: Resistin (From Topology)T: ResistinF: PCSK9_C-CRD_3rdECOD (1.6)
BPeptidase_S8e5vl7B4 A: a/b three-layered sandwichesX: Subtilisin-likeH: Subtilisin-like (From Topology)T: Subtilisin-likeF: Peptidase_S8ECOD (1.6)
C [auth H]V-set_8e5vl7H1 A: beta sandwichesX: Immunoglobulin-like beta-sandwichH: Immunoglobulin-relatedT: Immunoglobulin/Fibronectin type III/E set domains/PapD-likeF: V-set_8ECOD (1.6)
C [auth H]C1-set_1e5vl7H2 A: beta sandwichesX: Immunoglobulin-like beta-sandwichH: Immunoglobulin-relatedT: Immunoglobulin/Fibronectin type III/E set domains/PapD-likeF: C1-set_1ECOD (1.6)
D [auth L]C1-set_4e5vl7L2 A: beta sandwichesX: Immunoglobulin-like beta-sandwichH: Immunoglobulin-relatedT: Immunoglobulin/Fibronectin type III/E set domains/PapD-likeF: C1-set_4ECOD (1.6)
D [auth L]V-sete5vl7L1 A: beta sandwichesX: Immunoglobulin-like beta-sandwichH: Immunoglobulin-relatedT: Immunoglobulin/Fibronectin type III/E set domains/PapD-likeF: V-setECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

IMGT Antibody Annotation IMGT Database Homepage

ChainProtein NameDescriptionOrganism NameGene Allele Name(s)Domain Name(s)Receptor TypeReceptor DescriptionProvenance Source
C [auth H]Fab 33 VH-CH1 Homo sapiens (human) IGHV3-23*04, IGHJ4*01, IGHJ4*02, IGHJ4*03, IGHG1*01, IGHG1*02, IGHG1*04, IGHG1*05 V-DOMAIN VH, C-DOMAIN CH1 IG FAB-GAMMA-1_KAPPA IMGT (202449-0)
D [auth L]Fab 33 L-KAPPA Homo sapiens (human) IGKV1-12*01, IGKV1D-12*01, IGKV1-12*02, IGKV1D-12*02, IGKJ1*01, IGKC*01 V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA IG FAB-GAMMA-1_KAPPA IMGT (202449-0)

SAbDab Antibody Annotation SAbDab Database Homepage

ChainChain ClassChain SubclassChain TypeAntigen Name(s) Provenance Source
C [auth H]Heavy ChainIGHV3 -proprotein convertase subtilisin/kexin type 9SAbDab (2024-12-13)
D [auth L]Light ChainIGKV1 Kappaproprotein convertase subtilisin/kexin type 9SAbDab (2024-12-13)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF05922Peptidase inhibitor I9 (Inhibitor_I9)Peptidase inhibitor I9This family includes the proteinase B inhibitor from Saccharomyces cerevisiae and the activation peptides from peptidases of the subtilisin family. The subtilisin propeptides are known to function as molecular chaperones, assisting in the folding of ...This family includes the proteinase B inhibitor from Saccharomyces cerevisiae and the activation peptides from peptidases of the subtilisin family. The subtilisin propeptides are known to function as molecular chaperones, assisting in the folding of the mature peptidase [1], but have also been shown to act as 'temporary inhibitors' [2].
Domain
PF18463Proprotein convertase subtilisin-like/kexin type 9 C-terminal domain (PCSK9_C3)Proprotein convertase subtilisin-like/kexin type 9 C-terminal domainThis entry represents a subdomain found in the C-terminal cysteine/histidine-rich domain (CRD) of PCSK9 (also known as neural apoptosis-regulated convertase, NARC-1) [1]. PCSK9 has been shown to regulate circulating LDL-R levels by controlling LDL-R ...This entry represents a subdomain found in the C-terminal cysteine/histidine-rich domain (CRD) of PCSK9 (also known as neural apoptosis-regulated convertase, NARC-1) [1]. PCSK9 has been shown to regulate circulating LDL-R levels by controlling LDL-R degradation. Furthermore, numerous mutations in the PCSK9 gene have been identified and associated with hypercholesterolemia (gain of function) or hypocholesterolemia (loss of function) [2]. The fully folded CRD, shows structural similarity to the resistin homotrimer, a small cytokine associated with obesity and diabetes. The C-terminal domain from PCSK9 consists of three, three-stranded beta-subdomains arranged in a pseudothreefold, and each of the subdomains in the CRD of PCSK9 consists of three structurally conserved disulfide bonds [1].
Domain
PF18464Proprotein convertase subtilisin-like/kexin type 9 C-terminal domain (PCSK9_C2)Proprotein convertase subtilisin-like/kexin type 9 C-terminal domainThis entry represents a subdomain found in the C-terminal cysteine/histidine-rich domain (CRD) of PCSK9 (also known as neural apoptosis-regulated convertase, NARC-1) [1]. PCSK9 has been shown to regulate circulating LDL-R levels by controlling LDL-R ...This entry represents a subdomain found in the C-terminal cysteine/histidine-rich domain (CRD) of PCSK9 (also known as neural apoptosis-regulated convertase, NARC-1) [1]. PCSK9 has been shown to regulate circulating LDL-R levels by controlling LDL-R degradation. Furthermore, numerous mutations in the PCSK9 gene have been identified and associated with hypercholesterolemia (gain of function) or hypocholesterolemia (loss of function) [2]. The fully folded CRD, shows structural similarity to the resistin homotrimer, a small cytokine associated with obesity and diabetes. The C-terminal domain from PCSK9 consists of three, three-stranded beta-subdomains arranged in a pseudothreefold, and each of the subdomains in the CRD of PCSK9 consists of three structurally conserved disulfide bonds [1].
Domain
D [auth L]PF07686Immunoglobulin V-set domain (V-set)Immunoglobulin V-set domainThis domain is found in antibodies as well as neural protein P0 and CTL4 amongst others.Domain
D [auth L]PF07654Immunoglobulin C1-set domain (C1-set)Immunoglobulin C1-set domain- Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
Proprotein convertase subtilisin/kexin type 9
Proprotein convertase subtilisin/kexin type 9
C [auth H]Fab33 heavy chain---
D [auth L]Fab33 light chain- -

InterPro: Protein Family Classification InterPro Database Homepage

ChainsAccessionNameType
IPR041052Proprotein convertase subtilisin/kexin type 9, C-terminal domain 2Domain
IPR037045Peptidase S8 propeptide/proteinase inhibitor I9 superfamilyHomologous Superfamily
IPR010259Peptidase S8 propeptide/proteinase inhibitor I9Domain
IPR000209Peptidase S8/S53 domainDomain
IPR015500Peptidase S8, subtilisin-relatedFamily
IPR041051Proprotein convertase subtilisin/kexin type 9, C-terminal domain 3Domain
IPR050131Subtilisin-like serine proteaseFamily
IPR034193Proteinase K-like catalytic domainDomain
IPR041254Proprotein convertase subtilisin/kexin type 9, C-terminal domain 1Domain
IPR036852Peptidase S8/S53 domain superfamilyHomologous Superfamily
IPR041052Proprotein convertase subtilisin/kexin type 9, C-terminal domain 2Domain
IPR037045Peptidase S8 propeptide/proteinase inhibitor I9 superfamilyHomologous Superfamily
IPR010259Peptidase S8 propeptide/proteinase inhibitor I9Domain
IPR000209Peptidase S8/S53 domainDomain
IPR015500Peptidase S8, subtilisin-relatedFamily
IPR041051Proprotein convertase subtilisin/kexin type 9, C-terminal domain 3Domain
IPR050131Subtilisin-like serine proteaseFamily
IPR034193Proteinase K-like catalytic domainDomain
IPR041254Proprotein convertase subtilisin/kexin type 9, C-terminal domain 1Domain
IPR036852Peptidase S8/S53 domain superfamilyHomologous Superfamily
D [auth L]IPR003597Immunoglobulin C1-setDomain
D [auth L]IPR050150Immunoglobulin Variable Light ChainFamily
D [auth L]IPR013783Immunoglobulin-like foldHomologous Superfamily
D [auth L]IPR036179Immunoglobulin-like domain superfamilyHomologous Superfamily
D [auth L]IPR013106Immunoglobulin V-set domainDomain
D [auth L]IPR003599Immunoglobulin domain subtypeDomain
D [auth L]IPR007110Immunoglobulin-like domainDomain
D [auth L]IPR003006Immunoglobulin/major histocompatibility complex, conserved siteConserved Site

Pharos: Disease Associations Pharos Homepage Annotation

ChainsDrug Target  Associated Disease
PharosQ8NBP7
PharosQ8NBP7