7QUH | pdb_00007quh

Siglec-8 in complex with therapeutic Fab AK002.

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
SAbDab Antibody Annotation
Thera-SAbDab Antibody Annotation
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)
C [auth A]	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8089584	3000071	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)
C [auth A]	zf-C2H2_16	e7quhA1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: zf-C2H2_16	ECOD (v294.1)
B [auth L]	zf-C2H2_16	e7quhL1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: zf-C2H2_16	ECOD (v294.1)
A [auth H]	zf-C2H2_16	e7quhH1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: zf-C2H2_16	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C [auth A]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
B [auth L]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
A [auth H]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B [auth L]	Light Chain	IGKV3	Kappa	sialic acid-binding ig-like lectin 8	SAbDab (2026-04-10)
A [auth H]	Heavy Chain	IGHV3	-	sialic acid-binding ig-like lectin 8	SAbDab (2026-04-10)

Thera-SAbDab Antibody Annotation Thera-SAbDab Database Homepage

Chain	Name	Target	Provenance Source
B [auth L]	Lirentelimab	SIGLEC8/SAF2	Therapeutic SAbDab (2026-04-10)
A [auth H]	Lirentelimab	SIGLEC8/SAF2	Therapeutic SAbDab (2026-04-10)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
C [auth A]	PF07686	Immunoglobulin V-set domain (V-set)	Immunoglobulin V-set domain	This domain is found in antibodies as well as neural protein P0 and CTL4 amongst others.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C [auth A]	Sialic acid-binding Ig-like lectin 8	binding carbohydrate binding sialic acid binding organic acid binding ion binding anion binding carboxylic acid binding carbohydrate derivative binding small molecule binding molecular transducer activity transmembrane signaling receptor activity signaling receptor activity	cell adhesion cellular process cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation signal transduction cell communication	cellular anatomical structure membrane cell periphery plasma membrane
B [auth L]	Sialic acid-binding immunoglobulin-type lectin	-	-	-
A [auth H]	Sialic acid-binding immunoglobulin-type lectin	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C [auth A]	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
C [auth A]	IPR003598	Immunoglobulin subtype 2	Domain
C [auth A]	IPR013151	Immunoglobulin-like beta-sandwich domain	Domain
C [auth A]	IPR051036	Sialic acid-binding Ig-like lectin	Family
C [auth A]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
C [auth A]	IPR013106	Immunoglobulin V-set domain	Domain
C [auth A]	IPR003599	Immunoglobulin domain subtype	Domain
C [auth A]	IPR007110	Immunoglobulin-like domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
C [auth A]	Pharos: Q9NYZ4	glaucoma osteosarcoma

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), 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 R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.