3FFD | pdb_00003ffd

Structure of parathyroid hormone-related protein complexed to a neutralizing monoclonal antibody

External Resource: Annotation

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

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d3ffda_	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	V set domains (antibody variable domain-like)	automated matches	mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
B	d3ffdb1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	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)
A	CheC, CheX	e3ffdA1	A: a/b three-layered sandwiches	X: TIM beta/alpha-barrel	H: CheC-like	T: CheC-like	F: CheC, CheX	ECOD (v294.1)
B	CheC, CheX	e3ffdB1	A: a/b three-layered sandwiches	X: TIM beta/alpha-barrel	H: CheC-like	T: CheC-like	F: CheC, CheX	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
B	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
A	Monoclonal antibody Fab	VH-CH1	Mus musculus (house mouse)	IGHV5-6-101, IGHV5-601, IGHJ301, IGHG101, IGHG1*02	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-1_LAMBDA	IMGT (202611-0)
B	Monoclonal antibody Fab	L-LAMBDA	Mus musculus (house mouse)	IGLV301, IGLJ201, IGLC2*01	V-DOMAIN V-LAMBDA, C-DOMAIN C-LAMBDA	IG	FAB-GAMMA-1_LAMBDA	IMGT (202611-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
A	Heavy Chain	IGHV5	-	parathyroid hormone-related protein	SAbDab (2026-03-27)
B	Light Chain	IGLV3	Lambda	parathyroid hormone-related protein	SAbDab (2026-03-27)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Monoclonal antibody, heavy chain, Fab fragment	-	-	-
B	Monoclonal antibody, light chain, Fab fragment	-	-	-
C [auth P]	Parathyroid hormone-related protein	peptide hormone receptor binding protein binding binding signaling receptor binding hormone receptor binding hormone activity molecular function activator activity molecular function regulator activity signaling receptor regulator activity receptor ligand activity signaling receptor activator activity	developmental process multicellular organismal process ossification bone mineralization animal organ development anatomical structure development biomineral tissue development tissue development multi-multicellular organism process reproductive process female pregnancy multi-organism reproductive process multicellular organism development skeletal system development developmental process multicellular organismal process ossification bone mineralization animal organ development anatomical structure development biomineral tissue development tissue development multi-multicellular organism process reproductive process female pregnancy multi-organism reproductive process multicellular organism development skeletal system development system development regulation of biosynthetic process regulation of biological process regulation of cellular process biological regulation regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process regulation of gene expression biosynthetic process regulation of macromolecule biosynthetic process metabolic process cellular process macromolecule metabolic process regulation of metabolic process epidermis development signaling cell-cell signaling cell communication osteoblast development cellular developmental process cell differentiation cell development osteoblast differentiation cellular response to stimulus response to stimulus adenylate cyclase-activating G protein-coupled receptor signaling pathway adenylate cyclase-modulating G protein-coupled receptor signaling pathway G protein-coupled receptor signaling pathway signal transduction cell population proliferation positive regulation of cell population proliferation regulation of cell population proliferation positive regulation of biological process positive regulation of cellular process adenylate cyclase-activating G protein-coupled cAMP receptor signaling pathway negative regulation of cell population proliferation negative regulation of cellular process negative regulation of biological process regulation of chondrocyte differentiation regulation of cartilage development regulation of developmental process connective tissue development negative regulation of cartilage development regulation of cell differentiation negative regulation of chondrocyte differentiation negative regulation of chondrocyte development regulation of cell development regulation of chondrocyte development negative regulation of cell differentiation regulation of multicellular organismal process regulation of multicellular organismal development negative regulation of developmental process negative regulation of cell development chondrocyte differentiation negative regulation of multicellular organismal process chondrocyte development cartilage development nucleoside phosphate metabolic process ribose phosphate metabolic process cAMP metabolic process cyclic purine nucleotide metabolic process carbohydrate derivative metabolic process primary metabolic process nucleotide metabolic process cyclic nucleotide metabolic process purine-containing compound metabolic process nucleobase-containing compound metabolic process purine nucleotide metabolic process ribonucleotide metabolic process organophosphate metabolic process nucleobase-containing small molecule metabolic process phosphate-containing compound metabolic process small molecule metabolic process purine ribonucleotide metabolic process phosphorus metabolic process	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle nucleoplasm organelle lumen organelle nuclear lumen cellular anatomical structure intracellular anatomical structure cytoplasm cytosol membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle nucleoplasm organelle lumen organelle nuclear lumen Golgi apparatus endomembrane system extracellular region extracellular space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C [auth P]	IPR001415	Parathyroid hormone/parathyroid hormone-related protein	Family
C [auth P]	IPR003626	Parathyroid hormone-related protein	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
C [auth P]	Pharos: P12272	brachydactyly type E2 hypercalcemia disease breast carcinoma non-small cell lung carcinoma plasma cell myeloma neuroendocrine neoplasm prostate cancer alcoholic pancreatitis Edema superior vena cava syndrome malignant pancreatic neoplasm chronic pancreatitis acute pancreatitis breast cancer cystic fibrosis brachydactyly type E2 hypercalcemia disease breast carcinoma non-small cell lung carcinoma plasma cell myeloma neuroendocrine neoplasm prostate cancer alcoholic pancreatitis Edema superior vena cava syndrome malignant pancreatic neoplasm chronic pancreatitis acute pancreatitis breast cancer cystic fibrosis osteoarthritis pilocytic astrocytoma hyperparathyroidism asthma lung cancer brachydactyly type E cancer ovarian cancer genetic endocrine growth disease IgA glomerulonephritis triple-negative breast carcinoma astrocytic tumor lung disease bone resorption disease lytic metastatic bone lesion breast fibroadenoma myeloid neoplasm cutaneous lupus erythematosus oligodendroglioma estrogen-receptor negative breast cancer pancreatic neoplasm plasma cell neoplasm sinusitis intellectual disability atypical teratoid rhabdoid tumor medulloblastoma

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
C [auth P]	OPM	Peptides	Alpha-helical peptides	Peptide hormones	Parathyroid hormone-related protein

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.