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861.
862.
Yong Wang Jae Young Choi Jong Yul Roh Soo Dong Woo Byung Rae Jin Yeon Ho Je 《Journal of microbiology (Seoul, Korea)》2008,46(6):704-708
Baculovirus, Spodoptera litura granulovirus (SlGV) was isolated from the infected S. litura larvae, and was characterized. The granule of SlGV was ovoidal shape with an approximate size of 240∼340 nm× 140∼180 nm.
Each granule contained one single rod-shape virion with a mean size of 180∼200 nm×20∼40 nm. Restriction endonuclease fragment
analysis estimated that the total genome size of SlGV is about 115 kb. Necleotide sequence analysis of the granulin gene showed
that the gene encodes 249 amino acids with a predicted molecular mass of 29 kDa. When the phylogenic relationship was analyzed
using the nucleotide sequence of the granulin gene, SlGV was most closely related to Trichoplusia ni granulovirus (TnGV) and Xestia c-nigrum granulovirus (XcGV) which belong to Type I granulovirus. 相似文献
863.
864.
Young Je Lee Allison Hoynes-O'Connor Matthew C. Leong Tae Seok Moon 《Nucleic acids research》2016,44(5):2462-2473
A central goal of synthetic biology is to implement diverse cellular functions by predictably controlling gene expression. Though research has focused more on protein regulators than RNA regulators, recent advances in our understanding of RNA folding and functions have motivated the use of RNA regulators. RNA regulators provide an advantage because they are easier to design and engineer than protein regulators, potentially have a lower burden on the cell and are highly orthogonal. Here, we combine the CRISPR system from Streptococcus pyogenes and synthetic antisense RNAs (asRNAs) in Escherichia coli strains to repress or derepress a target gene in a programmable manner. Specifically, we demonstrate for the first time that the gene target repressed by the CRISPR system can be derepressed by expressing an asRNA that sequesters a small guide RNA (sgRNA). Furthermore, we demonstrate that tunable levels of derepression can be achieved (up to 95%) by designing asRNAs that target different regions of a sgRNA and by altering the hybridization free energy of the sgRNA–asRNA complex. This new system, which we call the combined CRISPR and asRNA system, can be used to reversibly repress or derepress multiple target genes simultaneously, allowing for rational reprogramming of cellular functions. 相似文献
865.
Naing Aung Htay Song Hyun Young Lee Je Min Lim Ki Byung Kim Chang Kil 《Plant Cell, Tissue and Organ Culture》2019,138(3):507-515
Plant Cell, Tissue and Organ Culture (PCTOC) - Virus-induced gene silencing (VIGS) is widely used for functional analysis of genes in plants. Because of the variation in its effectiveness among... 相似文献
866.
A strain of Bacillus thuringiensis, STB-1, toxic against Spodoptera exigua , was isolated. Bacillus thuringiensis STB-1 produced bipyramidal inclusions and reacted with the H antiserum of B. thuringiensis ssp. kurstaki . The plasmid and protein profiles of B. thuringiensis STB-1 were compared with those of its reference strains, ssp. kurstaki and ssp. kenyae . To verifiy the gene type of B. thuringiensis STB-1, PCR analysis was performedwith Spodoptera -specific cry gene primers. The result showed that B. thuringiensis STB-1, unlike its reference strains, had cry1Aa , cry1Ab , cry1Ac and cry1E , suggesting that B. thuringiensis STB-1 was a unique strain with respect to gene type. In addition, B. thuringiensis STB-1 showed a high level of toxicity against both S. exigua and Bombyx mori , whereas B. thuringiensis ssp. kurstaki HD-1 or ssp. kenyae showed a high level of toxicity against only Bombyx mori or S. exigua , respectively. 相似文献