Abstract:The 4 normal alleles of M1, M2, M3, and M4 are the most common gene products of the human alpha-1-antitrypsin (hAAT). Two single substitutions in M1 are responsible for M3 and M4, whereas 2 substitutions in M1 produce M2. Polymerase chain reaction-restriction fragment length polymorphism analysis of the Arg(101)/His(101) sequence variation can separate M1 and M3 from M2 and M4 alleles. To complete the genotyping procedure of hAAT M variants, the exon-V Glu(376)/Asp(376) sequence variation was directly analyzed… Show more
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