Abstract:
:A cystinuria disease gene (rBAT) has recently been identified, but evidence strongly suggests that only Type-I cystinuria is due to mutations in this gene. Sixteen point mutations and a large deletion causing the disease have so far been described in the rBAT gene sequence. To identify new mutated alleles, genomic DNA was analyzed, after the determination of the entire genomic structure of the rBAT gene, by RNA-single strand conformation polymorphism analysis, an accurate and sensitive method able to detect nucleotide changes. Four new point mutations, a large deletion, and a common intragenic polymorphism were detected. These new mutations increase to 22 the number of mutated alleles so far characterized in rBAT. In addition, the frequency of 21 mutations was assessed in a sample of accurately defined Type-I cystinuria chromosomes. They account for about 58% of all Type-I chromosomes, mutation M467T being the most common (0.26).
journal_name
Hum Genetjournal_title
Human geneticsauthors
Bisceglia L,Calonge MJ,Dello Strologo L,Rizzoni G,de Sanctis L,Gallucci M,Beccia E,Testar X,Zorzano A,Estivill X,Zelante L,Palacin M,Gasparini P,Nunes Vdoi
10.1007/s004390050237subject
Has Abstractpub_date
1996-10-01 00:00:00pages
447-51issue
4eissn
0340-6717issn
1432-1203journal_volume
98pub_type
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