V-Set Domain-Containing T-Cell Activation Inhibitor 1

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

**Definition:** V-set domain-containing T-cell activation inhibitor 1 (282 aa, ~31 kDa) is encoded by the human VTCN1 gene. This protein plays a role in the inhibition of T-cell functions.

**Synonyms:** - B7 Homolog 4 - B7h.5 - Immune Costimulatory Protein B7-H4 - Protein B7S1 - T-Cell Costimulatory Molecule B7x - VTCN1