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Characterization of human AFLP systems apolipoprotein B, phenylalanine hydroxylase, and D1S80.

Roche Diagnostic Systems, Inc., Branchburg, New Jersey 08876.

Abstract

Methodology is presented for amplified fragment length polymorphism (AFLP) typing using a nonisotopic, PCR protocol. Human variable number tandem repeat (VNTR) loci used for identification in forensic and paternity testing were optimized for reaction and thermal-cycling parameters. Loci analyzed were the apolipoprotein B (APOB) 3' hypervariable region (HVR), phenylalanine hydroxylase 3' HVR (PAH), and D1S80. Coamplification of a monomorphic beta-globin fragment serves as an amplification control. Biotin is integrated into PCR amplicon through primer incorporation. AFLP products undergo agarose gel electrophoresis and Southern transfer to a nylon membrane. Amplicons were detected using a streptavidin-enzyme conjugate. Either colorimetric- or chemiluminescent-developed bands are genotyped using locus-specific allele ladders with known VNTR repeat numbers. Using this methodology, we have successfully typed > 500 individuals from three population groups for each locus during data basing and casework.

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