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TNFRSF11B

Function

Acts as decoy receptor for TNFSF11/RANKL and thereby neutralizes its function in osteoclastogenesis. Inhibits the activation of osteoclasts and promotes osteoclast apoptosis in vitro. Bone homeostasis seems to depend on the local ratio between TNFSF11 and TNFRSF11B. May also play a role in preventing arterial calcification. May act as decoy receptor for TNFSF10/TRAIL and protect against apoptosis. TNFSF10/TRAIL binding blocks the inhibition of osteoclastogenesis.

Involvement in disease

Paget disease of bone 5, juvenile-onset

PDB5

An autosomal recessive, juvenile-onset form of Paget disease, a disorder of bone remodeling characterized by increased bone turnover affecting one or more sites throughout the skeleton, primarily the axial skeleton. Osteoclastic overactivity followed by compensatory osteoblastic activity leads to a structurally disorganized mosaic of bone (woven bone), which is mechanically weaker, larger, less compact, more vascular, and more susceptible to fracture than normal adult lamellar bone. PDB5 clinical manifestations include short stature, progressive long bone deformities, fractures, vertebral collapse, skull enlargement, and hyperostosis with progressive deafness.

None

The disease is caused by variants affecting the gene represented in this entry.

Post-translational modifications

N-glycosylated. Contains sialic acid residues.

The N-terminus is blocked.

Tissue specificity

Highly expressed in adult lung, heart, kidney, liver, spleen, thymus, prostate, ovary, small intestine, thyroid, lymph node, trachea, adrenal gland, testis, and bone marrow. Detected at very low levels in brain, placenta and skeletal muscle. Highly expressed in fetal kidney, liver and lung.

Cellular localization

  • Secreted

Alternative names

  • Tumor necrosis factor receptor superfamily member 11B
  • Osteoclastogenesis inhibitory factor
  • Osteoprotegerin
  • OCIF
  • OPG
  • TNFRSF11B

Target type

Proteins

Primary research area

Immunology & Infectious Disease

Other research areas

  • Oncology

Molecular weight

46026Da