NCIt definition : Human GNAS wild-type allele is located in the vicinity of 20q13.3 and is approximately
71 kb in length. This allele, which encodes neuroendocrine secretory protein 55, protein
ALEX and guanine nucleotide-binding protein G(s) subunit alpha isoforms short and
XLas, is involved in the mediation of G-protein coupled receptor-dependent signal
transduction. Mutations in this gene are associated with Albright's hereditary osteodystrophy.;