[Expressed in melanocytes and melanomas by human SILV Gene (PMEL17/NMB Family), 661-aa 70-kDa (precursor) Melanocyte Lineage-Specific Antigen gp100is a probable type I membrane protein containing a putative leader sequence, a potential membrane anchor segment, 5 potential N-glycosylation sites, high levels of serine and threonine, a PKD domain, and amino acid similarity to tyrosinase and CAS2 protein. PMEL17 cross reacts with antityrosinase antibodies and expression correlates with melanin content. The soluble ME20-S form is a probable proteolytic cleavage product. CD8 T lymphocytes recognize a noncontiguous spliced nonameric sequence of gp100 on melanoma cells. Splicing appears to occur by transpeptidation involving an acyl-enzyme intermediate. (NCI) ( NCI )]
UMLS (NCI) C0257766 - Amino Acid, Peptide, or Protein
- Biologically Active Substance