Human genes containing polymorphic trinucleotide repeats.
Expansions of trinucleotide repeats within gene transcripts are responsible for fragile X syndrome, myotonic dystrophy and spinal and bulbar muscular atrophy. To identify other human genes with similar features as candidates for triplet repeat expansion mutations, we screened human cDNA libraries with repeat probes and searched databases for transcribed genes with repeats. From both strategies, 40 genes were identified and 14 characterized. Five were found to contain repeats which are highly polymorphic including the N-cadherin, BCR, glutathione-S-transferase and Na+/K+ ATPase (beta-subunit) genes. These data demonstrate the occurrence of other human loci which may undergo this novel mechanism of mutagenesis giving rise to genetic disease.
Riggins
G J
GJ
Howard Hughes Medical Institute, Atlanta, Georgia.
Lokey
L K
LK
Chastain
J L
JL
Leiner
H A
HA
Sherman
S L
SL
Wilkinson
K D
KD
Warren
S T
ST
D001483:Base Sequence; D015820:Cadherins / Q000235:genetics; D003001:Cloning, Molecular; D018076:DNA, Complementary / Q000235:genetics; D005260:Female; D015723:Gene Library; D005982:Glutathione Transferase / Q000235:genetics; D006801:Humans; D008297:Male; D008969:Molecular Sequence Data; D005810:Multigene Family / Q000235:genetics; D009838:Oligodeoxyribonucleotides; D010375:Pedigree; D011110:Polymorphism, Genetic; D012091:Repetitive Sequences, Nucleic Acid / Q000235:genetics*; D000254:Sodium-Potassium-Exchanging ATPase / Q000235:genetics
D015820:Cadherins; D018076:DNA, Complementary; D009838:Oligodeoxyribonucleotides; D005982:Glutathione Transferase; D000254:Sodium-Potassium-Exchanging ATPase