Biology Faculty Articles

Title

Genetic Mapping of the β1 GABA Receptor Gene to Human Chromosome 4, Using a Tetranucleotide Repeat Polymorphism

Document Type

Article

Publication Date

9-1991

Publication Title

American Journal of Human Genetics

ISSN

0002-9297

Volume

49

Issue/No.

3

First Page

621

Last Page

626

Abstract

As more coding loci for functional human genes are described, there is a growing need to identify DNA polymorphisms in specific genes. By examining DNA sequences within the introns of the β1 subunit of the gamma-aminobutyric acid receptor gene, GABARB1, we found a tetranucleotide repeat sequence (GATA). Amplification of this region by using PCR revealed seven alleles and a high degree of polymorphism (PIC = .75) in human populations. DNAs from the CEPH families were typed for the GABARB1 intron polymorphism and were analyzed with respect to 20 linked markers on chromosome 4. The results permit placement of GABARB1 on the linkage map of chromosome 4, between D4S104 and ALB. These results affirm that sequence analysis of noncoding segments included within or adjacent to functional genes has value as a strategy to detect highly informative polymorphisms.

Comments

This material is in the public domain, and no copyright is claimed.

Additional Comments

Department of Health and Human Services contract #: NO1-CO-74102

ORCID ID

0000-0001-7353-8301

ResearcherID

N-1726-2015