The immobilized enzyme retained most of its activity and had a relatively constant efficiency when used for batch transformations.
The fed-batch transformation of FA started by adding FA to a final concentration of 5 mM (stock solution, 1 M FA in DMSO) to the medium and then 4 and 8 h later.
For qRT-PCR analysis of GFP gene expression in transgenic T0 plants, total RNAs were isolated individually from three leaves of 20 lines randomly selected from one batch of transformation with each vector indicated in Figure 3A.
To confirm our hypothesis that SIRT1 promotes cell proliferation by activating some kinase signaling, we examined the activation of ERK, AKT and p70 S6K1 in different batches of transformations.
Compared to mock-transfected cells, 2BS with enforced expression of H363YSIRT1 did not significantly influence the phosphorylations of ERK, AKT and p70 S6K1. Figure 4A also showed that total ERK protein levels were not altered in different batches of transformations.
Thus, SNPs, indels, and transpositions may pre-exist in the seed batch used for transformation.
Our computational analysis takes in account two important parameters for data transformation: Batch effect and Principal Component Analysis (PCA).
Instead of running agarose gels to check the size distributions, a more direct way is to use several batches in a transformation experiment and retain the one that gives the highest transformation efficiency regardless of its size distribution.
Data were quantile normalized and subject to log2 transformation Potential batch effects were assessed by visual inspection of MDS plots and PCA analysis.
Notably, after log transformation and batch effect correction, the quantification method even explains slightly more of the variation than the tissue, whereas all other factors are essentially uninformative.
Results were standardized to reduce the effect of hybridization batches using z-score transformation.
