Protein Amnionless

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

**Definition:** Protein amnionless (453 aa, ~48 kDa) is encoded by the human AMN gene. This protein plays a role in cellular uptake of vitamin B12.

**Synonyms:** - AMN - Amnion Associated Transmembrane Protein - Visceral Endoderm-Specific Type 1 Transmembrane Protein