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Function

Receptor for interleukin-11 (IL11). The receptor systems for IL6, LIF, OSM, CNTF, IL11 and CT1 can utilize IL6ST for initiating signal transmission. The IL11/IL11RA/IL6ST complex may be involved in the control of proliferation and/or differentiation of skeletogenic progenitor or other mesenchymal cells (Probable). Essential for the normal development of craniofacial bones and teeth. Restricts suture fusion and tooth number.

Soluble interleukin-11 receptor subunit alpha

Soluble form of IL11 receptor (sIL11RA) that acts as an agonist of IL11 activity (PubMed:26876177, PubMed:30279168). The IL11:sIL11RA complex binds to IL6ST/gp130 on cell surfaces and induces signaling also on cells that do not express membrane-bound IL11RA in a process called IL11 trans-signaling (PubMed:26876177, PubMed:30279168).

Isoform HCR2

Soluble form of IL11 receptor (sIL11RA) that acts as an agonist of IL11 activity (PubMed:26876177, PubMed:30279168). The IL11:sIL11RA complex binds to IL6ST/gp130 on cell surfaces and induces signaling also on cells that do not express membrane-bound IL11RA in a process called IL11 trans-signaling (PubMed:26876177, PubMed:30279168).

Involvement in disease

Craniosynostosis and dental anomalies

CRSDA

A disorder characterized by craniosynostosis, maxillary hypoplasia, and dental anomalies, including malocclusion, delayed and ectopic tooth eruption, and/or supernumerary teeth. Some patients also display minor digit anomalies, such as syndactyly and/or clinodactyly.

None

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

Post-translational modifications

A short soluble form is also released from the membrane by proteolysis (PubMed:26876177). The sIL11RA is formed either by limited proteolysis of membrane-bound receptors, a process referred to as ectodomain shedding, or directly secreted from the cells after alternative mRNA splicing (PubMed:26876177). mIL11RA is cleaved by the proteases ADAM10, ELANE and PRTN3 (PubMed:26876177).

Sequence similarities

Belongs to the type I cytokine receptor family. Type 3 subfamily.

Tissue specificity

Expressed in a number of cell lines, including the myelogenous leukemia cell line K-562, the megakaryocytic leukemia cell line M-07e, the erythroleukemia cell line TF-1, and the osteosarcoma cell lines, MG-63 and SaOS-2 (PubMed:7670098). Also expressed in normal and malignant prostate epithelial cell lines. Expression levels are increased in prostate carcinoma.

Cellular localization

  • Interleukin-11 receptor subunit alpha
  • Membrane
  • Single-pass type I membrane protein
  • Soluble interleukin-11 receptor subunit alpha
  • Secreted
  • Isoform HCR2
  • Secreted

Alternative names

Interleukin-11 receptor subunit alpha, IL-11 receptor subunit alpha, IL-11R subunit alpha, IL-11R-alpha, IL-11RA, IL11RA

Target type

Proteins

Primary research area

Metabolism

Molecular weight

45222Da

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