PRG4 Gene Summary [Human]

The protein encoded by this gene is a large proteoglycan that is synthesized by chondrocytes located at the surface of articular cartilage and by some synovial lining cells. This protein contains both chondroitin sulfate and keratan sulfate glycosaminoglycans. It functions as a boundary lubricant at the cartilage surface and contributes to the elastic absorption and energy dissipation of synovial fluid. Mutations in this gene result in camptodactyly-arthropathy-coxa vara-pericarditis syndrome. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Dec 2014]

Details

Type
Protein Coding
Official Symbol
PRG4
Official Name
proteoglycan 4 [Source:HGNC Symbol;Acc:HGNC:9364]
Ensembl ID
ENSG00000116690
Bio databases IDs NCBI: 10216 Ensembl: ENSG00000116690
Aliases proteoglycan 4, lubricin, megakaryocyte stimulating factor, articular superficial zone protein, Jacobs camptodactyly-arthropathy-pericarditis syndrome, camptodactyly, arthropathy, coxa vara, pericarditis syndrome, bG174L6.2 (MSF: megakaryocyte stimulating factor )
Synonyms C77892, CACP, DOL54, HAPO, JCAP, LUBRICIN, MSF, PROTEOGLYCAN 4, proteoglycan 4 (megakaryocyte stimulating factor, articular superficial zone protein), SZP, Tpr
Species
Human, Homo sapiens
OrthologiesMouseRat

Protein Domains

A protein domain is a distinct structural or functional region within a protein that can evolve, function, and exist independently of the rest of the protein chain. These domains in human PRG4 often fold into stable, three-dimensional structures and are associated with specific biological functions, such as binding to DNA, other proteins, or small molecules.
  • Hemopexin-like repeats
  • Family of unknown function (DUF5585)
  • Cornifin (SPRR) family
  • HX
  • TonB polyproline region
  • Somatomedin B domain

Pathways

Biological processes and signaling networks where the PRG4 gene in human plays a role, providing insight into its function and relevance in health or disease.

Top Findings

The most significant associations for this gene, including commonly observed domains, pathway involvement, and functional highlights based on current data.
disease
  • epithelial cancer
  • osteoarthritis
  • hepatocellular carcinoma
  • liver cancer
  • Jacobs syndrome
  • lung adenocarcinoma
  • lung adenocarcinoma formation
  • hereditary disorder
  • camptodactyly
  • flu
regulated by
regulates
role in cell
  • differentiation
  • proliferation

Subcellular Expression

Locations within the cell where the protein is known or predicted to be active, providing insight into its function and cellular context.
  • Extracellular Space
  • interchromatin granule cluster fractions
  • cell surface

Gene Ontology Annotations

Describes the biological processes, cellular components, and molecular functions associated with the human PRG4 gene, providing context for its role in the cell.

Biological Process

Functions and activities the gene product is involved in
  • immune response
  • vesicle-mediated transport

Cellular Component

Where in the cell the gene product is active
  • extracellular space

Molecular Function

What the gene product does at the molecular level
  • scavenger receptor activity
  • extracellular matrix structural constituent conferring compression resistance
  • polysaccharide binding

Gene-Specific Assays for Results You Can Trust

Streamline your workflow with assays designed for this gene. Our targeted dPCR and qPCR assays help you generate meaningful data – efficiently and accurately.