34 research outputs found
Induced Mutations of Naked DNA by Atmospheric Pressure Plasma Jet (APPJ)
āļāļāļāļąāļāļĒāđāļ āļāļēāļĢāļĻāļķāļāļĐāļēāļāļĢāļąāđāļāļāļĩāđāļĄāļĩāļ§āļąāļāļāļļāļāļĢāļ°āļŠāļāļāđāđāļāļ·āđāļāļĻāļķāļāļĐāļēāļāļĨāļāļāļāļāļĨāļēāļŠāļĄāļēāđāļāļāļāļ§āļēāļĄāļāļąāļāļāļĢāļĢāļĒāļēāļāļēāļĻ (APPJ) āļāđāļāļāļēāļĢāļāļąāļāļāļģāđāļŦāđāļāļĩāđāļāđāļāđāļāđāļāļĨāļ·āļāļĒāđāļāļīāļāļāļēāļĢāļāļĨāļēāļĒāļāļąāļāļāļļāđ āļāļĩāđāļāđāļāđāļāđāļāļĨāļ·āļāļĒāļāļĩāđāđāļāđāđāļāļāļēāļĢāļāļāļĨāļāļ āļāļ·āļ āļāļĨāļēāļŠāļĄāļīāļāļāļĩāđāļāđāļāđāļāļāļĩāđāļĄāļĩāđāļāļĢāļāļĩāļāđāļĢāļ·āļāļāđāļŠāļāļŠāļĩāđāļāļĩāļĒāļ§ (pGFP) āđāļāļĒ pGFP āļāļđāļāļĢāļ°āļāļĄāļĒāļīāļāļāđāļ§āļĒāļŪāļĩāđāļĨāļĩāļĒāļĄāļāļĨāļēāļŠāļĄāļē (He-plasma) āđāļĨāļ°āļāļēāļĢāđāļāļāļāļāļĨāļēāļŠāļĄāļē (Ar-plasma) āļāļĩāđāļāļĨāļąāļāļāļēāļ 100 āļ§āļąāļāļāđ āđāļāđāļāđāļ§āļĨāļē 10 āđāļĨāļ° 15 āļāļēāļāļĩ āļāļēāļāļāļąāđāļāļŠāđāļāļāđāļēāļĒ āļāļĨāļēāļŠāļĄāļīāļ pGFP āļāļĩāđāļāļđāļāļĢāļ°āļāļĄāļĒāļīāļāđāļāđāļēāļŠāļđāđāđāļāļĨāļĨāđāđāļāļāļāļĩāđāļĢāļĩāļĒ Escherichia coli āļŠāļēāļĒāļāļąāļāļāļļāđ DH5Îą āđāļāļ·āđāļāļāļĢāļ§āļāļŠāļāļāļāļēāļĢāļāļĨāļēāļĒāļāļąāļāļāļļāđāļ āļēāļĒāđāļāđāđāļŠāļ UV āđāļāđāļĨāļāļĩāļŠāļĩāļāļēāļ§āļāļ·āļāđāļāļāļāļĩāđāļĢāļĩāļĒāļāļąāļāļāļļāđāļāļĨāļēāļĒ āđāļāļāļēāļĢāļāļāļĨāļāļāļāļĩāđāļāļāļāļēāļĢāļāļĨāļēāļĒāļāļąāļāļāļļāđāļāļāļ pGFP āđāļĄāļ·āđāļāļāļĨāļēāļŠāļĄāļīāļāļāļĩāđāļāđāļāđāļāđāļāļĨāļ·āļāļĒāļāļđāļāļĢāļ°āļāļĄāļĒāļīāļāļāđāļ§āļĒāļāļēāļĢāđāļāļāļāļāļĨāļēāļŠāļĄāļēāļāļĩāđāđāļ§āļĨāļē 15 āļāļēāļāļĩ āđāļāđāļēāļāļąāđāļ āļāļēāļāļāļĨāļāļēāļĢāļ§āļīāđāļāļĢāļēāļ°āļŦāđāļĨāļģāļāļąāļāļāļīāļ§āļāļĨāļĩāđāļāđāļāļāđ āļāļāļāļēāļĢāļāļĨāļēāļĒāļāļąāļāļāļļāđāđāļāļĒāļāļēāļĢāđāļāļīāđāļĄāļāļķāđāļāļāļāļāļāļīāļ§āļāļĨāļĩāđāļāđāļāļāđ (insertion) āđāļĨāļ°āļāļēāļĢāđāļāļāļāļĩāđāļāļđāđāđāļāļŠ (substitution) āļĄāļēāļāļāļĩāđāļŠāļļāļ āļāļĨāļāļēāļāļāļēāļĢāļĻāļķāļāļĐāļēāļāļĢāļąāđāļāļāļĩāđāļŠāļēāļĄāļēāļĢāļāļāļģāđāļāđāļāđāđāļāđāļāļāđāļāļĄāļđāļĨāļāļ·āđāļāļāļēāļāļŠāļģāļŦāļĢāļąāļāļāļēāļĢāļāļąāļāļāļģāļāļēāļĢāļāļĨāļēāļĒāļāļąāļāļāļļāđāļāļāļāļāļĩāđāļāđāļāđāļāđāļāļĨāļ·āļāļĒāđāļāļĒāļāļĨāļēāļŠāļĄāļēāđāļāļāļāļ§āļēāļĄāļāļąāļāļāļĢāļĢāļĒāļēāļāļēāļĻ āļāļģāļŠāļģāļāļąāļ: āļāļēāļĢāđāļāļāļāļāļĨāļēāļŠāļĄāļē āļāļĨāļēāļŠāļĄāļēāđāļāļāļāļ§āļēāļĄāļāļąāļāļāļĢāļĢāļĒāļēāļāļēāļĻ (APPJ) āļŪāļĩāđāļĨāļĩāļĒāļĄāļāļĨāļēāļŠāļĄāļē āļāļēāļĢāļāļĨāļēāļĒāļāļąāļāļāļļāđ āļāļĩāđāļāđāļāđāļāđāļāļĨāļ·āļāļĒ ABSTRACTThis study was aimed to investigate the effect of atmospheric pressure plasma jet (APPJ) on induced mutation to naked DNA. The DNA sample was plasmid DNA containing green fluorescent protein (pGFP). Helium (He) and argon (Ar) plasmas were chosen to bombard pGFP with energy of 100 watts for 10 and 15 min. Consequently the bombarded pGFP was transferred into E. coli DH5Îą. Then, transformed E. coli was screened under UV light. White colonies indicated as bacterial mutants. In this work, the mutation was observed when the naked DNA was bombarded only at 15 min with Ar plasma. DNA sequencing revealed that substitution and insertion mutations were major types of DNA mutation. The results from this study could be used as basic data for induced mutations of naked DNA by APPJ.Keywords: Argon plasma, Atmospheric pressure plasma jet (APPJ), Helium plasma, Mutation,Naked DN
Analysis of a Nicotiana plumbaginifolia cDNA encoding a novel small GTP-binding protein
AbstractSmall GTP-binding proteins belonging to the Ras superfamily have been found in evolutionarily divergent organisms. Here, we report the isolation and analysis of a cDNA encoding a putative small GTP-binding protein, designated Rhn1, from the plant, Nicotiana plumbaginifolla. The 21.8-kDa protein has 60% amino acid similarity with the mammalian Rab5 proteins. The Rhn1 protein is encoded by a small multigene family. Northern analysis shows the highest steady-state mRNA levels to be in roots and flowers. Furthermore, the Rhnl protein has 80% amino acid similarity with an Arabidopsis small GTP-binding protein, designated Rha1
Molecular characterization of an Arabidopsis thaliana cDNA encoding a small GTP-binding protein, Rha1
We have isolated a cDNA encoding a small GTP-binding protein from an Arabidopsis thaliana cDNA library using an oligonucleotide probe derived from the most conserved domain of the ras superfamily. The cDNA encodes a 21.8 kDa protein, designated Rha1, which shows high homology to members of the ras superfamily in the regions involved in GTP binding, GTPase activity, and membrane attachment. The amino acid sequence is 60% identical to the sequence of the mammalian Rab5 protein, a small GTP-binding protein which is believed to be involved in endocytosis. Several regions, including the putative effector domain are completely conserved. This high percentage of amino acid identity suggests that the Rha1 protein is the functional plant counterpart of the Rab5 protein. When expressed in E. coli, the Rha1 protein was shown to bind GTP. The rha1 gene is most highly expressed in root and callus tissue, weakly expressed in stems and inflorescences and virtually not expressed in leaves and seed pods. Genomic Southern analysis revealed that rha1 is part of a small multigene family