5FB8 | pdb_00005fb8

Structure of Interleukin-16 bound to the 14.1 antibody

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
IMGT Antibody Annotation
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
C	d5fb8c_	All beta proteins	PDZ domain-like	PDZ domain-like	automated matches	automated matches	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d5fb8b_	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	House Mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
A	d5fb8a2	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	automated matches	House Mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
A	d5fb8a1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	House Mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
C	C2	e5fb8C1	A: a/b three-layered sandwiches	X: beta-propeller-like	H: beta-propeller	T: 9-bladed	F: C2	ECOD (v294.1)
B	C2	e5fb8B1	A: a/b three-layered sandwiches	X: beta-propeller-like	H: beta-propeller	T: 9-bladed	F: C2	ECOD (v294.1)
A	C2	e5fb8A1	A: a/b three-layered sandwiches	X: beta-propeller-like	H: beta-propeller	T: 9-bladed	F: C2	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C	2.30.42.10	Mainly Beta	Roll	Pdz3 Domain	PDZ domain	CATH (4.3.0)
B	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
A	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)

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
B	14.1 Fab, Anti-IL-16	VH-CH1	Chimeric (chimeric)	IGHV1-3701, IGHJ201, IGHG101, IGHG102, IGHG104, IGHG105	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-1_KAPPA	IMGT (202613-0)
A	14.1 Fab, Anti-IL-16	L-KAPPA	Chimeric (chimeric)	IGKV3-1201, IGKJ201, IGKC*01	V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA	IG	FAB-GAMMA-1_KAPPA	IMGT (202613-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B	Heavy Chain	IGHV1	-	pro-interleukin-16	SAbDab (2026-04-10)
A	Light Chain	IGKV3	Kappa	pro-interleukin-16	SAbDab (2026-04-10)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
C	PF00595	PDZ domain (PDZ)	PDZ domain	PDZ domains are found in diverse signaling proteins.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C	Pro-interleukin-16	protein binding binding signaling receptor binding CD4 receptor binding molecular function activator activity molecular function regulator activity cytokine activity signaling receptor regulator activity receptor ligand activity signaling receptor activator activity	cellular response to stimulus regulation of biological process regulation of cellular process cell surface receptor signaling pathway response to stimulus signaling biological regulation response to cytokine cytokine-mediated signaling pathway cell communication response to peptide response to chemical cellular process cellular response to cytokine stimulus cellular response to stimulus regulation of biological process regulation of cellular process cell surface receptor signaling pathway response to stimulus signaling biological regulation response to cytokine cytokine-mediated signaling pathway cell communication response to peptide response to chemical cellular process cellular response to cytokine stimulus signal transduction regulation of defense response regulation of response to external stimulus defense response positive regulation of biological process response to external stimulus regulation of inflammatory response positive regulation of response to stimulus positive regulation of response to external stimulus positive regulation of inflammatory response regulation of response to stimulus regulation of response to stress response to stress positive regulation of defense response inflammatory response multicellular organismal process interleukin-1 production positive regulation of macromolecule biosynthetic process positive regulation of metabolic process positive regulation of interleukin-1 alpha production positive regulation of biosynthetic process regulation of cytokine production cytokine production regulation of multicellular organismal process positive regulation of interleukin-1 production positive regulation of macromolecule metabolic process positive regulation of cellular process regulation of biosynthetic process regulation of interleukin-1 production regulation of macromolecule metabolic process gene expression regulation of interleukin-1 alpha production macromolecule biosynthetic process regulation of gene expression interleukin-1 alpha production biosynthetic process positive regulation of gene expression positive regulation of multicellular organismal process regulation of macromolecule biosynthetic process metabolic process macromolecule metabolic process positive regulation of cytokine production regulation of metabolic process positive chemotaxis chemotaxis positive regulation of locomotion positive regulation of positive chemotaxis induction of positive chemotaxis regulation of chemotaxis positive regulation of chemotaxis regulation of positive chemotaxis taxis regulation of locomotion locomotion immune response immune system process interleukin-6 production positive regulation of interleukin-6 production regulation of interleukin-6 production cell chemotaxis leukocyte migration cellular response to chemical stimulus cell migration cell motility leukocyte chemotaxis regulation of interleukin-12 production interleukin-12 production positive regulation of interleukin-12 production	cellular anatomical structure anchoring junction cell junction focal adhesion cell-substrate junction membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle intracellular organelle lumen nuclear speck ribonucleoprotein granule cellular anatomical structure anchoring junction cell junction focal adhesion cell-substrate junction membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle intracellular organelle lumen nuclear speck ribonucleoprotein granule intracellular organelle nuclear body nucleoplasm organelle lumen organelle membraneless organelle supramolecular complex nuclear ribonucleoprotein granule nuclear lumen extracellular region cytoplasm cytosol cell periphery plasma membrane membrane Flemming body midbody
B	Anti-IL-16 antibody 14.1 Fab domain Heavy Chain	-	-	-
A	Anti-IL-16 antibody 14.1 Fab domain Kappa Chain	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C	IPR036034	PDZ superfamily	Homologous Superfamily
C	IPR020450	Interleukin-16	Family
C	IPR001478	PDZ domain	Domain
C	IPR055287	Interleukin-16-like	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
C	Pharos: Q14005	prostate cancer allergic disease Spontaneous abortion alopecia areata lung cancer osteosarcoma primary biliary cholangitis psoriasis ulcerative colitis heart disease interstitial cystitis lung carcinoma ovarian cancer Sjogren syndrome hepatocellular carcinoma prostate cancer allergic disease Spontaneous abortion alopecia areata lung cancer osteosarcoma primary biliary cholangitis psoriasis ulcerative colitis heart disease interstitial cystitis lung carcinoma ovarian cancer Sjogren syndrome hepatocellular carcinoma lung adenocarcinoma non-small cell lung carcinoma periodontitis

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.