Method for importing exogenous DNA (deoxyribonucleic acid) into nannochloropsis oculata chloroplast and related chloroplast genome sequence
A chloroplast genome, Nannochloropsis technology, applied in the field of biological genetic engineering, to achieve the effect of stable expression
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[0057] Embodiment: Realize the stable expression of green fluorescent protein GFP gene in Nannochloropsis chloroplast
[0058] 1. Validation of the restriction modification system of Nannochloropsis
[0059] The specific restriction endonucleases in bacterial cells are used to resist the invasion of phages, and this system is called the restriction modification system. This system is also present in cyanobacteria. The evolutionary status of unicellular eukaryotic microalgae is unique, whether there is a similar restriction modification system. To do this, use the following steps to verify:
[0060](1) Extraction of total protein from Nannochloropsis: Cultivate Nannochloropsis to logarithmic phase, 5000g, 10min, collect algae at 4°C; 5ml PENA solution (10mM K3PO4, 10mM EDTA, 50mM NaCland a tablet of aprotinin per 50ml, pH 7.0) rinse twice; suspend the algae in 1ml PENA solution; add 100mg glass beads, vortex vigorously for 1min; centrifuge at 4000g, 15min, 4°C; take the supe...
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