DNA assembly technologies: a review / 生物工程学报

DNA assembly is the core technology of synthetic biology. With the development of synthetic biology, researchers have developed different DNA assembly technologies that rely on DNA polymerase or DNA ligase, and also have developed some non-enzyme-dependent DNA assembly techniques to facilitate the automation of DNA assembly. The assembly of large fragments of DNA from a few hundred kb to Mb is mostly dependent on microbial recombination. In this paper, the three types of DNA assembly technologies, including enzyme-dependent, non-enzymatic and in vivo homologous recombination, are reviewed.

Effect of integration loci of genome on heterologous gene expression in Saccharomyces cerevisiae / 生物工程学报

Chromosomal integration of heterologous genes or pathways is preferred over the use of episomal plasmids for its inherently stability and thus more desirable in the industrial setting. However, the position of integration of heterologous genes in the genome influences the expression levels. In combination of high throughput transformation of the Yeast Knock-out Collection (YKO) and FACS analysis, the position effect on heterologous reporter gene gfp was identified across the whole genome in yeast. In total 428 high-expressed sites and 444 low-expressed sites were spotted, providing massive data to analyze patterns and reasons for region dependency of gene expression on the genome-wide scale.