ABSTRACT
OBJECTIVE@#To explore the application value of Expressmarker 22 STR loci direct PCR amplification kit.@*METHODS@#One thousand nine hundred and forty-eight samples (including samples spotted on FTA cards, filter papers and case samples) were tested using Expressmarker 22 STR loci direct PCR amplification kit. At the same time, all were tested using Sinofiler kit, Identifiler kit and PowerPlex 16 kit respectively for comparison. The genotypes were compared at the same STR loci among these four kits to test the sensitivity and accuracy of Expressmarker 22 STR loci direct PCR amplification kit.@*RESULTS@#97.79% samples were successfully typed using Expressmarker 22 STR loci direct PCR amplification kit. The genotype profiles of the same samples using Expressmarker 22 STR loci direct PCR amplification kit were consistent with Sinofiler kit, Identifiler kit and PowerPlex 16 kit at the same STR loci.@*CONCLUSION@#Expressmarker 22 STR loci direct PCR amplification kit can provide huge information and accurate results
Subject(s)
Humans , Alleles , DNA/genetics , DNA Fingerprinting/methods , DNA Primers , Forensic Genetics/methods , Genetic Loci/genetics , Genotype , Microsatellite Repeats , Polymerase Chain Reaction/methodsABSTRACT
OBJECTIVE@#To establish a rapid STR genotyping method for individual identification.@*METHODS@#Two hundred blood samples from FTA were collected. Equal amount of blood were collected by puncher and analyzed using two methods (6+1 STR kit in combination with EX-Q20 electrophoresis and Sinofiler kit in combination with POP4 electrophoresis). Consuming time and results of two methods were compared.@*RESULTS@#6+1 STR kit in combination with EX-Q20 electrophoresis method can obtain all genotyping results and be shorter time.@*CONCLUSION@#6+1 STR kit in combination with EX-Q20 electrophoresis method is used to STR genotyping with accurate, reliable results and this new method is potential value in mass personnel investigation and comparison in major criminal cases. It also can raise the work efficiency.
Subject(s)
Humans , Alleles , Blood Stains , DNA/genetics , DNA Fingerprinting/methods , DNA Primers , Electrophoresis, Capillary/methods , Forensic Medicine/methods , Genotype , Genotyping Techniques/methods , Polymerase Chain Reaction/methods , Reagent Kits, Diagnostic , Reproducibility of Results , Tandem Repeat SequencesABSTRACT
Recombinant plasmids pHY-PA, pBBR-PA were constructed in which genes pdc and adhB were placed under the control of tac promoter, respectively, and had successfully expressed in Escherichia coli. Then these recombinant plasmids were electroporated into Lactobacillus strains for ethanol production. Preliminary ethanol fermentation using these Lactobacillus strains and their recombinants was carried out using 42℃ as fermentation temperature. The results indicated that introducing pdc and adhB, ethanologenic pathway was successfully constructed in L.plantanum CICIM B0080. 0.4% (V/V) ethanol was detected at the end of fermentation with 6.7% glucose, and that is 67-fold as the wild-type B0080. Two-fold of ethanol production was detected in L.amylovorus B0112 (pHY-PA) and L.acidophilus B0068 (pBBR-PA). Introducing both pdc and adhB, and meanwhile knock-outing the lactate dehydrogrnase gene may better convert carbon flux to ethanologenic direction.