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Bsiwi

Manufactured by Takara Bio
Sourced in United States, China

BsiWI is a type II restriction endonuclease that recognizes and cleaves the palindromic DNA sequence 5'-CCGC(G/C)G-3'. This enzyme is commonly used in molecular biology applications such as DNA cloning, genetic engineering, and DNA analysis.

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7 protocols using bsiwi

1

miR-148a-3p Binding Site Characterization

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Fragments of miR-148a-3p, including the binding site of Meox2, were amplified and inserted into pEZX-FR02 vectors (GeneCopoeia, United States) at the 3′ end of the Firefly Luciferase gene using restriction enzymes BsiWI and XhoI (TaKaRa, Dalian, China) and T4 DNA ligase (pEZX-Meox2-WT). Mutant pEZX-Meox2-MT was generated by mutating complementary to the seed region of miR-148a-3p using mutagenic primers. All constructs were verified by sequence analysis.
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2

Investigating miR-3525 Regulation of PDLIM3

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Fragments of gga-miR-3525, including the binding site of PDLIM3 (150 bp upstream and downstream of the binding site), were amplified and inserted into pEZX-FR02 vectors (GeneCopoeia, USA) at the 3’ end of the Firefly Luciferase gene using restriction enzymes BsiWI and XhoI (TaKaRa, Dalian, China) and T4 DNA ligase (pEZX-PDLIM3-WT). Mutant pEZX-PDLIM3-MT was generated by mutating complementary to the seed region of gga-miR-3525 using mutagenic primers. All constructs were verified by sequence analysis.
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3

Cloning miR-9-5p binding site in Luciferase

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Fragments of miR-9-5p, including the binding site of IGF2BP3, were amplified and inserted into pEZX-FR02 vectors (GeneCopoeia, Amaranth Drive Germantown, Maryland, USA) at the 3’ end of the Firefly Luciferase gene using restriction enzymes BsiWI and XhoI (TaKaRa) and T4 DNA ligase (pEZX- IGF2BP3-WT). Mutant pEZX- IGF2BP3-MT was generated by mutating complementary to the seed region of miR-9-5p using mutagenic primers. All constructs were verified by sequence analysis.
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4

Generating Luciferase Reporter Constructs

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The linear sequence of circTMTC1 was synthesized and cloned into pCD2.1-ciR (Geneseed Biotech, Guangzhou, China) according to the manufacturer's protocol using the KpnI and BamHI (TaKaRa) restriction sites (pCD2.1-ciRcTMTC1). The fragment of the circTMTC1 including binding site of miR-128-3p, was amplified and inserted into Dual luciferase reporter vector (pEZX-FR02) (GeneCopoeia, Rockville, MD, USA) at the 3′ end of Firefly Luciferase gene using restriction enzymes BsiWI and XhoI (TaKaRa) and T4 DNA ligase (pEZX-circTMTC1-WT). The mutant pEZX-circTMTC1-MT was generated by mutating complementary to the seed region of the miR-128-3p using mutagenic primer. pEZX-MSTN-3'UTR-WT vector and pEZX-MSTN-3'UTR-MT vector were constructed using the same method. All constructs were verified by sequencing.
Small interfering RNA (siRNA) overlap junction sites of circTMTC1 and miR-128-3p mimics/inhibitor (Supplementary Table. S2) were synthesized by GenePharma Co. Ltd (Shanghai, China).
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5

Cloning and Mutagenesis of miR-200a-3p Binding Site

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Fragments of miR-200a-3p, including the binding site of TGF-β2, were amplified and inserted into pEZX-FR02 vectors (GeneCopoeia, Amaranth Drive Germantown, Maryland, USA) at the 3′ end of the Firefly Luciferase gene using restriction enzymes BsiWI and XhoI (TaKaRa) and T4 DNA ligase (pEZX-TGF-β2-WT). Mutant pEZX-TGF-β2-MT was generated by mutating complementary to the seed region of miR-200a-3p using mutagenic primers. All constructs were verified by sequence analysis.
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6

Cloning of E2-Crimson Template into lentiGuide-Puro

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E2-Crimson template (Clontech) was PCR amplified to add BsiWI (5′) and MluI (3′) restriction sites for cloning purposes using the following conditions: KOD buffer (1×), MgSO4 (1.5 mM), dNTPs (0.2 mM each), forward primer (0.3 μM; GGCCGGCCCGTACGcgtacgGCCACCATGGATAGCACTGAGAACGTCATCAAGCCCTT), reverse primer (0.3 μM; GGCCGGCCacgcgtCTACTGGAACAGGTGGTGGCGGGCCT), and KOD Hot Start DNA Polymerase (0.02 U/μL). KOD PCR reaction used the following cycling conditions: 95°C for 2 minutes; 50 cycles of 95°C for 20 seconds, 60°C for 20 seconds, and 70°C for 30 seconds; 60°C for 5 minutes. PCR products were purified (QIAquick PCR Purification Kit) and cloned with Zero Blunt PCR cloning kit. Cloned products and lentiGuide-puro were separately digested with BsiWI (New England Biolabs) and MluI (New England Biolabs) in 1× Buffer 3.1 at 37°C (New England Biolabs). Digest of lentiGuide-Puro (Addgene plasmid ID 52963) was performed to remove the puromycin cassette. Then digested PCR product was ligated into the lentiGuide backbone.
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7

Cloning of E2-Crimson Template into lentiGuide-Puro

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E2-Crimson template (Clontech) was PCR amplified to add BsiWI (5′) and MluI (3′) restriction sites for cloning purposes using the following conditions: KOD buffer (1×), MgSO4 (1.5 mM), dNTPs (0.2 mM each), forward primer (0.3 μM; GGCCGGCCCGTACGcgtacgGCCACCATGGATAGCACTGAGAACGTCATCAAGCCCTT), reverse primer (0.3 μM; GGCCGGCCacgcgtCTACTGGAACAGGTGGTGGCGGGCCT), and KOD Hot Start DNA Polymerase (0.02 U/μL). KOD PCR reaction used the following cycling conditions: 95°C for 2 minutes; 50 cycles of 95°C for 20 seconds, 60°C for 20 seconds, and 70°C for 30 seconds; 60°C for 5 minutes. PCR products were purified (QIAquick PCR Purification Kit) and cloned with Zero Blunt PCR cloning kit. Cloned products and lentiGuide-puro were separately digested with BsiWI (New England Biolabs) and MluI (New England Biolabs) in 1× Buffer 3.1 at 37°C (New England Biolabs). Digest of lentiGuide-Puro (Addgene plasmid ID 52963) was performed to remove the puromycin cassette. Then digested PCR product was ligated into the lentiGuide backbone.
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