Sequencing joint, construction method, nano-hole library building kit and application
A technology for sequencing adapters and nanopores, which is used in biochemical equipment and methods, chemical libraries, and microbial determination/inspection.
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Embodiment 1
[0090] (1) Design and synthesize the simulated joint top chain of the simulated joint top chain structure and the simulated joint bottom chain of the simulated joint bottom chain, wherein,
[0091] Simulate the adapter-top chain as adapter-top:
[0092] 5'- AATGTACTTCGTTCAGTTACGTATTGC -TCO-3';
[0093] The bottom chain of the simulated connector is adapter-bottom:
[0094] 5'-GCCG GCAATACGTAACTGAACGAAGTACATT GAGGCGAGCGGTCAAT-3'.
[0095] The annealing buffer was used to dissolve the synthesized simulated adapter top strand and simulated adapter bottom strand respectively to prepare 20uM stock solution A and stock solution B. Mix stock solution A and stock solution B in equal proportions and perform annealing treatment to obtain annealed products.
[0096] (2) According to the known sequence of the pUC19 plasmid, design a pair of primers with a product size of 228bp, wherein the 5' end of the upstream primer is appropriately modified as follows:
[0097]228-F: 5'-Tz-CGGC...
Embodiment 2
[0105] (1) Design and synthesize the joint top chain and the joint bottom chain, wherein,
[0106] The adapter top chain is adapter-top:
[0107] 5'-(iSpC3) 30 -GCGTG ACTAT CGGAC TCGTG GTC TTTTT TTTTT-(iSp18) 4 - GTCAG TTCGC TTCTT ACGCA -TCO-3';
[0108] The bottom chain of the connector is adapter-bottom:
[0109] 5'-GCCG TGCGT AAGAA GCGAA CTGAC AGTCC AGCAC CGACC T-3';
[0110] The annealing buffer was used to dissolve the synthesized adapter top strand and adapter bottom strand respectively to prepare 20 μM stock solution A and stock solution B, and stock solution A and stock solution B were mixed in equal proportions before annealing.
[0111] The T4 Dda helicase is loaded onto the Y adapter, resulting in a complex of enzyme and adapter. The sequence of T4 Dda helicase is shown in SEQ ID NO.1.
[0112] (2) According to the known sequence of phage (phage), design a pair of PCR amplification primers with a product of 502bp, and the upstream primers are modified a...
Embodiment 3
[0120] Refer to the scheme of Example 2 to prepare the test sequence connected with the sequencing adapter, the difference is that the Tco group in the top strand of the adapter is replaced by the DBCO group, and the Tz group in the upstream primer is replaced by the N3 group; And set up 3 control groups, in the 3 control groups, the mixture of annealed product and amplified product was left standing for 25min, 2hour and 6hour respectively, to verify the influence of different standing time on the connection rate of annealed product and amplified product.
[0121] The above products were detected by polyacrylamide gel electrophoresis. see Figure 9 to Figure 11 , Figure 9 It is the electrophoresis image of the product after standing for 25 minutes. Among them, the corresponding samples of the gel holes are as follows from left to right: maker; well 1-3: the mixture of annealed product and amplification product after standing for 25 minutes; hole 4: amplification product ; 5...
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