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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Human genetics 〈Berlin〉 92 (1993), S. 554-562 
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The polymerase chain reaction was used to amplify six small variable number of tandem repeat loci in two reactions (D19S20 co-amplifying with D17S5 and D1S80; D17S766 co-amplifying with D16S83 and D17S24). When coupled with fluorescent detection of the products, this provides a rapid, highly discriminating automated test. Preferential amplification of small alleles, leading to ‘allelic dropout’ was found to occur in D19S20 and D16S83. Population databases are presented for Caucasians and Afro-Caribbeans at loci D19S20, D16S83 and D17S24, and for Asians at D19S20.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Molecular genetics and genomics 216 (1989), S. 380-387 
    ISSN: 1617-4623
    Keywords: Restriction-modification system ; Neisseria gonorrhoeae ; Nucleotide sequence of R.-M. genes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The NgoPII restriction endonuclease, which recognizes the sequence 5′-GG↓CC-3′, differs from its isoschizomer HaeIII in being sensitive to methylation at the external cytosine residue. The entire nucleotide sequence of a cloned 3.3 kb segment of Neisseria gonorrhoeae strain P9 chromosomal DNA which harbours the NgoPII restriction-modification system has been determined. This data, coupled with sub-cloning experiments, indicates that the restriction endonuclease (R.NgoII) and modification (M.NgoII) genes are transcribed from separate promoters but are arranged in tandem, with the R.NgoPII gene being located on the 5′ side of the M.NgoPII gene. Unlike all previously reported restriction systems the 3′ end of the endonuclease open reading frame overlaps the 5′ end of the methylase open reading frame by 8 codons. This overlap may have implications for the regulation of the NgoPII restriction-modification system.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    International journal of legal medicine 108 (1996), S. 237-243 
    ISSN: 1437-1596
    Keywords: Faeces ; Mitochondrial DNA ; Extraction Solid-phase sequencing ; Forensic DNA typing
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Law
    Notes: Abstract A method has been developed for the forensic analysis of faeces by DNA amplification and direct sequencing of a polymorphic segment of mitochondrial DNA. Starting from as little as 10 mg wet weight of faeces, DNA was extracted by a variety of protocols and amplified using primers specific to hypervariable region I of the mitochondrial control region. The resulting amplification products were sequenced in solid phase using an automated DNA sequencer. In total, mtDNA sequences were generated from the faeces of nine Caucasians and compared with sequences generated from their respective blood samples. Sequences of faeces and blood samples from the same individual were identical in every case, but a range of 1–10 nucleotide differences was observed between individuals, with an average sequence variation of approximately 4.88 per 400 bp. Of the various extraction protocols assessed in this study, greatest success rates were achieved using magnetisable beads to bind and purify the DNA. STR analysis of DNA extracted from faeces was not routinely possible.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1437-1596
    Keywords: Sex-test ; Amelogenin ; PCR ; HLA-DQA1 ; Sex-Test ; Amelogenin ; PCR ; HLA-DQA
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Law
    Description / Table of Contents: Zusammenfassung Durch Amplifikation eines Segments des X-Y-homologen Gens Amelogenin wurde eine Geschlechtsidentifikation forensischer Proben durchgeführt. Mit einem einzigen Primerpaar, welches einen Teil des ersten Introns überspannt, wurden PCR-Produkte mit 106bp und 112bp von den homologen Anteilen des X- und des Y-Chromosoms generiert, welche dann mit Hilfe der Agarosegelelektrophorese aufgetrennt wurden. Dieser Test erlaubte es, daß so geringe Mengen wie 20pg DNA von stärkergradig degradierten Knochen amplifiziert und ineiner Einzelreaktion typisiert wurden. Durch Benutzung von farbstoffmarkierten Primern war es ferner möglich, durch automatisierte Fluoreszenzdetektion die relative Ausbeute von X- und Yspezifischen PCR-Produkten zu quantifizieren, wie sie von Mischungen männlicher und weiblicher DNA generiert wurden. Die Vielseitigkeit dieses Sex-Tests wurde ferner dadurch nachgewiesen, daß eine Co-Amplifikation mit dem HLA-DQA1 „Amplitype”-Kit in einem kombinierten Geschlechtsbestimmungs-und Identifizierungs-DNA-Test möglich war.
    Notes: Summary Gender identification of forensic samples was determined by amplifying a segment of the X-Y homologous gene amelogenin. Using a single pair of primers spanning part of the first intron, 106 by and 112 by PCR products were generated from the X and Y homologues respectively, which were then resolved by agarose gel electrophoresis. This test enabled as little as 20 pg of DNA from severely degraded bones to be amplified and typed in a single tube reaction. Furthermore, using dye-labelled primers, it was possible to quantitate, by automated fluorescence detection, the relative yields of X and Y -specific PCR products generated from mixtures of male and female DNA. The versatility of this sex test was further demonstrated by co-amplifying with the HLA-DQA1 Amplitype kit in a combined gender/identity DNA test.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Electrophoresis 12 (1991), S. 17-21 
    ISSN: 0173-0835
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Part of the human mitochondrial D-loop region was amplified by two successive rounds of polymerase chain reaction (PCR) amplification. In the second PCR reaction, nested primers were used, of which one contained the M 13-21 universal primer sequence. By using nonequal concentrations of primers in the second amplification, single-stranded DNA was generated. This was then sequenced directly by the dideoxy chain termination method using dye-labelled universal sequencing primers in conjunction with a fluorescence-based DNA sequencer. This enabled a 403-base-pair hypervariable segment of the D-loop region to be readily sequenced in a single reaction. This paper describes a protocol which enables mitochondrial sequence information to be generated rapidly and automatically. It is likely to be of importance in forensic analysis where the DNA is too degraded or of insufficient quantity to be analysed by other techniques.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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