Health Dictionary Find a Doctor

Amnionless

Amnionless is a protein that in humans is encoded by the AMN gene.[1][2]

Function

Function

A complex of amnionless and cubilin forms the cubam receptor.

The protein encoded by this gene is a type I transmembrane protein. It is thought to modulate bone morphogenetic protein (BMP) receptor function by serving as an accessory or coreceptor, and thus facilitates or hinders BMP binding. It is known that the mouse AMN gene is expressed in the extraembryonic visceral endoderm layer during gastrulation, but it is found to be mutated in amnionless mouse. The encoded protein has sequence similarity to short gastrulation (Sog) and procollagen IIA proteins in Drosophila.[2]

References

References

  1. Kalantry S, Manning S, Haub O, Tomihara-Newberger C, Lee HG, Fangman J, Disteche CM, Manova K, Lacy E (Mar 2001). “The amnionless gene, essential for mouse gastrulation, encodes a visceral-endoderm-specific protein with an extracellular cysteine-rich domain”. Nat Genet. 27 (4): 412–6. doi:10.1038/86912. PMID 11279523.
  2. 2.0 2.1 “Entrez Gene: AMN amnionless homolog (mouse)”.
External links
Further reading

Further reading

Looking for the patient version?

Back to the patient-friendly article

© 2026 MyEClinic – IFTM Institut für Telematik in der Medizin GmbH