G protein Gsα (GNAS1), the probable candidate gene for albright hereditary osteodystrophy, is assigned to human chromosome 20q12-q13.2

V. V.N. Gopal Rao, Susanne Schnittger, Ingo Hansmann

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Guanine nucleotide-binding proteins, also known as G proteins, mediate intracellular responses to a wide variety of extracellular stimuli. A variety of genes that specify the synthesis of the components of guanine nucleotide proteins have been identified. One of these proteins, termed Gsα (GNAS1), is the G protein component of the olfactory signal transduction cascade. Mutations in the GNAS1 gene leading to Gsα protein deficiency are known to be associated with pseudohypoparathyroidism Ia (Albright hereditary esteodystrophy) and certain pituitary tumors with acromegaly. Studies on the human-mouse somatic cell hybrids provisionally assigned this gene to chromosome 20. We have now confirmed this localization on chromosome 20 and regionally assigned the GNAS1 gene to 20q12-q13.2 by in situ hybridization.

Original languageEnglish (US)
Pages (from-to)257-261
Number of pages5
Issue number1
StatePublished - May 1991
Externally publishedYes


ASJC Scopus subject areas

  • Genetics

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