Two naturally occurring amino acid substitutions in the human 5-HT1A receptor: glycine 22 to serine 22 and isoleucine 28 to valine 28.
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Nakhai B, Nielsen DA, Linnoila M, Goldman D
Two naturally occurring amino acid substitutions in the human 5-HT1A receptor: glycine 22 to serine 22 and isoleucine 28 to valine 28.
Biochem Biophys Res Commun. 1995 May 16;210(2):530-6.
- PubMed ID
- 7755630 [ View in PubMed]
- Abstract
The human 5-HT1A receptor was screened for naturally occurring mutations. The PCR product of the 5-HT1A receptor gene was digested with several restriction enzymes and evaluated by single-strand conformational polymorphism (SSCP) analysis. Comparison of the SSCP electrophoretic pattern with a restriction map of the 5-HT1A receptor allowed localization of the polymorphic sites facilitating their identification by sequence analysis. Two polymorphisms were identified in the human 5-HT1A receptor gene that altered amino acid composition. The polymorphisms encode amino acid substitutions in the 5-HT1A receptor of a glycine to serine at amino acid 22 and an isoleucine to valine at amino acid 28, respectively. Both polymorphisms alter the extracellular amino terminal domain of the 5-HT1A receptor. The polymorphic 5-HT1A alleles have been found in American and Finnish Caucasians and in native American Indians. This is the first report of a polymorphism in the human 5-HT1A receptor gene that alters the structure of the 5-HT1A receptor protein composition.