For quantification of relative levels of cleaved caspase 9, cleaved caspase 7 and cleaved PARP in Myc- TMEM33 transfectants versus control vector, expression levels were first normalized against α-Tubulin in corresponding lanes.
We observed that compared to cells transfected with the empty vector, the expression level of PTEN and SALL1 in SALL4A-expressed cells was decreased by 30% and 35%, respectively.
With this pBAD241 vector, the expression level of the BtsI-1B can reach 50,000 units for each gram of cells.
To explore whether endogenous IMP1 regulated the production of retroviral vectors, the expression level of IMP1 was downregulated by RNA interference in the producer cells and the production of MLV-luc vector was assayed.
Following transforming these vectors, the expression level and percentage of the soluble 7ZFPs in the corresponding bacteria were compared under various culture temperatures (10°C, 17°C, and 25°C) and IPTG induction times (12 hr and 24 hr).
Given gene expression time series data over m genes at n time points, we denote the observations as the matrix, where, the column vector of expression levels for each of the m genes at time point j.
Based on the expression profile – a vector of expression levels under different biological conditions, the expression levels of a TF were clustered into either two or three categories (1: highly expressed, 0: normally expressed, -1: lowly expressed) using the K-means clustering algorithm, where the number of categories equals the number of types (>3, <−3, or between) of the expression situation.
As in the previous section, suppose we have an n-dimensional real vector containing the expression level to be studied (y), and a collection of d-dimensional real vectors xi that contains the descriptive variables (i.e, all markers and the rest of cDNAs).
With this vector, the protein expression level of the inserted gene in Xenopus oocyte can be increased by up to 200-fold [ 9].
Additionally, it requires a connectivity matrix of the network, a vector of differential expression level, and a controlling parameter as its inputs.
