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Assignment of the gene responsible for cystinuria (rBAT) and of markers D2S119 and D2S177 to 2p16 by fluorescence in situ hybridization.

Human genetics | Jun 26, 1995

We have established rBAT (named as SLC3A1 in the Genome Data Base) as a gene responsible for cystinuria, a heritable disorder of amino acid transport. The cystinuria locus has been mapped by linkage between microsatellite markers D2S119 and D2S177. Fluorescence in situ hybridization (FISH) either with Alu-polymerase-chain-reaction (PCR)-amplified sequences of a yeast artificial chromosome (YAC) containing the rBAT gene or with rBAT-specific PCR-amplified genomic fragments, and chromosome G-banding have cytogenetically mapped rBAT to 2p16.3. In order to correlate the physical and genetic information on cystinuria, we have performed FISH with combinations of Alu-PCR-amplified sequences from YACs containing rBAT or the D2S119 and D2S177 loci. In all cases, a fused signal is obtained that demonstrates their close physical location; this allows the assignment of rBAT, cystinuria and their linked markers, D2S119 and D2S177, to 2p16.

Pubmed ID: 7789946 RIS Download

Mesh terms: Amino Acid Transport Systems, Basic | Base Sequence | Biological Transport | Carrier Proteins | Chromosome Mapping | Chromosomes, Artificial, Yeast | Chromosomes, Human, Pair 2 | Cystinuria | Genetic Markers | Humans | In Situ Hybridization, Fluorescence | Membrane Glycoproteins | Molecular Sequence Data