Primer sets and detection kits for the detection of components derived from horses, donkeys, mules, and donkey mules
A technology for detecting kits and source components, which is applied in the direction of recombinant DNA technology, biochemical equipment and methods, measurement/testing of microorganisms, etc., can solve the problems of cumbersome and time-consuming components, and achieve short time-consuming and high workload Small, cost-saving effect
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Embodiment 1
[0021] In the embodiment of the present invention, there is a small fragment deletion between the homologous genes of horse and donkey found in the autosomal chromosome, and a first specific primer pair is designed at both ends of the deletion region. In order to increase the difference, when designing primers, the Base substitution is used to increase the specificity of the primer pair, and the nucleotide sequence of the first specific primer pair is the upstream primer shown in SEQ ID NO:1 and the downstream primer shown in SEQ ID NO:2. The horse's homolog CNGB3 cyclic nucleotide gated channelsubunit beta 3, specifically, horse [Equus caballus(horse)] Gene ID: 100055470, LocationChromosome 9, NC_009152.3(2298952..2413636); donkey [Equus asinus(ass) ]Gene ID: 106829842 Location NW_014637333.1(39847..171617). The nucleotide sequence of the donkey homologous gene amplified by the first specific primer pair is shown in SEQ ID NO: 7, and the nucleotide sequence of the amplified h...
Embodiment 2
[0034] In the embodiment of the present invention, the mitochondrial genes of horses and donkeys were used to identify and distinguish between mules and donkeys, and the full-length mitochondrial mitochondrial DNA (mtDNA) of horses and donkeys were downloaded from NCBI, wherein, Horse Horse: ACCESSION NC_001640LOCUS NC_001640 16660bp ; Donkey Dokey: ACCESSION NC_001788LOCUS NC_00178816670bp, use BioEdit software to compare, find the DNA segment that is very different in mitochondrial genes, and use this DNA segment to design nucleotide sequences such as SEQ ID NO: 3 and SEQ ID NO: The second specific primer pair shown in 4. In order to increase the difference, when designing the primers, base substitution was performed to increase the specificity of the primer pair, and the nucleotide sequence of the amplified PCR product is shown in SEQ ID NO: 9. During the extraction of the template for sample PCR, the extraction of blood DNA was performed using the TaKaRa MiniBEST Universal...
Embodiment 3
[0038] In the embodiment of the present invention, SRY (mammalian early gonads have the potential for bidirectional differentiation. In the process of sex determination, the undifferentiated gonads are finally determined according to whether the somatic cells express the SRY (sex-determining region of the Y chromosome) gene or not). It develops into ovarian or testis gene, and the unique gene on the Y chromosome is used to design the third specific primer pair. In order to increase the difference, when designing primers, base substitution is carried out to increase the specificity of the primer pair. Its nucleotides The sequences are shown in SEQ ID NO: 5 and SEQ ID NO: 6, and the nucleotide sequence of the amplified PCR product is shown in SEQ ID NO: 10.
[0039] Among them, the PCR amplification system is: using Green Taq Mix (Vazyme, p131), 20ul reaction system, containing Green Taq Mix 10ul, DNA template 2.4ul, upstream primer 0.5ul, downstream primer 0.5ul, ddH 2 O 6.6ul....
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