A disintegrin and metallopeptidase domain 19 (meltrin beta), or ADAM metallopeptidase domain 19, is a human gene encoded by ADAM19. It may also be known as: Disintegrin and metalloproteinase domain-containing protein 19; ADAM 19; Meltrin-beta; Metalloprotease and disintegrin dendritic antigen marker; MADDAM; meltrin beta; FKSG34; MLTNB. The encoded protein is an enzyme with an amino acid length of 955 and a mass of 105.0 kDa. Other isoforms may exist. Homologs of this gene exist in other organisms, including: Mouse, Rat, Zebrafish, Frog, Chicken.