East Asian mtDNA haplogroup determination in Koreans: haplogroup-level coding region SNP analysis and subhaplogroup-level control region sequence analysis.
The present study analyzed 21 coding region SNP markers and one deletion motif for the determination of East Asian mitochondrial DNA (mtDNA) haplogroups by designing three multiplex systems which apply single base extension methods. Using two multiplex systems, all 593 Korean mtDNAs were allocated into 15 haplogroups: M, D, D4, D5, G, M7, M8, M9, M10, M11, R, R9, B, A, and N9. As the D4 haplotypes occurred most frequently in Koreans, the third multiplex system was used to further define D4 subhaplogroups: D4a, D4b, D4e, D4g, D4h, and D4j. This method allowed the complementation of coding region information with control region mutation motifs and the resultant findings also suggest reliable control region mutation motifs for the assignment of East Asian mtDNA haplogroups. These three multiplex systems produce good results in degraded samples as they contain small PCR products (101-154 bp) for single base extension reactions. SNP scoring was performed in 101 old skeletal remains using these three systems to prove their utility in degraded samples. The sequence analysis of mtDNA control region with high incidence of haplogroup-specific mutations and the selective scoring of highly informative coding region SNPs using the three multiplex systems are useful tools for most applications involving East Asian mtDNA haplogroup determination and haplogroup-directed stringent quality control.
Lee
Hwan Young
HY
Department of Forensic Medicine, Yonsei University College of Medicine, Seoul, Korea.
Yoo
Ji-Eun
JE
Park
Myung Jin
MJ
Chung
Ukhee
U
Kim
Chong-Youl
CY
Shin
Kyoung-Jin
KJ
D044466:Asian People / Q000235:genetics*; D001842:Bone and Bones / Q000737:chemistry; D004272:DNA, Mitochondrial / Q000235:genetics*; D006239:Haplotypes; D006801:Humans; D047869:Korean War; D019901:Locus Control Region / Q000235:genetics*; D008963:Molar / Q000737:chemistry; D009154:Mutation; D016133:Polymerase Chain Reaction; D020641:Polymorphism, Single Nucleotide; D017422:Sequence Analysis, DNA
D004272:DNA, Mitochondrial