pZE21-MCS-Basic Information

Recommended Medium	Yeast extract: 5.0g, Peptone: 10.0g, NaCl: 10.0g, pH: 7.0 (25℃)
Growth Conditions	37℃; 18-24h; Aerobic
Storage Conditions	2-8℃
Procedure	① Dissolution: Add 20μL sterile water to the plasmid dry powder for dissolution, and let stand at room temperature for 1min; ② Mixing: Mix 200μl competent cells with 5-10μl plasmid DNA, and place on ice for 30min; ③ Heat-shock introduction: Let stand at 42℃ for 90s; ④ Membrane pore contraction: Ice bath for 2min; ⑤ Recovery culture: Add 800μl liquid Recommended Medium to each tube, and culture on a shaker at 37℃ for 1h (150 r/min); ⑥ Screening culture: Spread an appropriate volume (100 μl) of recovered cells onto LB plates with the corresponding antibiotic resistance. Leave the plates upright for 30min (the agar surface must be dry), then invert and culture for 12-16h until colonies appear; ⑦ Extraction: Pick single monoclonal colonies into LB liquid Recommended Medium with the corresponding antibiotic resistance, culture with shaking for 12-16h, and extract the plasmid according to experimental needs.
Reference Use	pZE21-MCS is a protein expression plasmid used in Escherichia coli. Its multiple cloning site (MCS) is flanked by multiple commonly used restriction enzyme sites, facilitating the cloning of target genes.
Sharing Method	Public Welfare Sharing