Identification of new polymorphisms in the CACNA1S gene.
We identified four novel polymorphisms in the CACNA1S gene that encodes the alpha1-subunit of the dihydropyridine receptor. Mutations in this gene are associated with two genetic diseases: malignant hyperthermia and hypokalemic periodic paralysis. The nucleotide substitutions c2403T --> C and c5398T --> C did not result in amino acid replacement, the nucleotide substitution c4475C --> A caused the replacement of the Ala1492 with an Asp residue and an A insertion was identified in intron 36. By using methods based on digestion with restriction enzymes we calculated the frequencies of these novel polymorphisms, as well as heterozygosity, in normal subjects from southern Italy.
Carsana
Antonella
A
Dipartimento di Biochimica e Biotecnologie Mediche, CEINGE Biotecnologie Avanzate s.c.r.l., Università di Napoli Federico II, Napoli, Italy.
Fortunato
Giuliana
G
De Sarno
Claudia
C
Brancadoro
Virginia
V
Salvatore
Francesco
F
D019943:Amino Acid Substitution / Q000235:genetics; D020746:Calcium Channels, L-Type / Q000235:genetics*; D017931:DNA Primers; D005091:Exons; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D006579:Heterozygote; D006801:Humans; D007438:Introns; D008305:Malignant Hyperthermia / Q000235:genetics*; D008969:Molecular Sequence Data; D011110:Polymorphism, Genetic / Q000235:genetics*; D015183:Restriction Mapping
D020746:Calcium Channels, L-Type; D017931:DNA Primers