
Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Left-right determination factor 1
Introduction
Left-right determination factor 1 is a protein that in humans is encoded by the LEFTY1 gene. [1]
Function
Function
This gene encodes a member of the TGF-beta family of proteins. A similar secreted protein in mouse plays a role in left-right asymmetry determination of organ systems during development. Alternative processing of this protein can yield three different products. This gene is closely linked to both a related family member and a related pseudogene.
Further reading
Further reading
- Besser D (2004). “Expression of nodal, lefty-a, and lefty-B in undifferentiated human embryonic stem cells requires activation of Smad2/3”. J. Biol. Chem. 279 (43): 45076–84. doi:10.1074/jbc.M404979200. PMID 15308665.
This article incorporates text from the United States National Library of Medicine, which is in the public domain.
