Left-Right Determination Factor 1

**Semantic type:** Amino Acid, Peptide, or Protein

**Definition:** Left-right determination factor 1 (366 aa, ~41 kDa) is encoded by the human LEFTY1 gene. This protein is involved in embryonic left/right axis determination.

**Synonyms:** - LEFTB - Left-Right Determination Factor B - Left-Right Determination Factor B Preproprotein - Lefty 2 Homolog - Lefty-B Protein - Protein Lefty-1 - Protein Lefty-B