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Hong-Jay Lo et al.
Organic letters, 14(23), 5896-5899 (2012-11-15)
A chiral pool based synthetic strategy that leads from the readily available and inexpensive C(2)-symmetric tartaric acids to the chiral O-isopropylidenebenzooxazole--a convenient precursor to the aminocyclitol core of hygromycin A as well as the chiral γ-disilyloxybutyrolactone--a pivotal intermediate to approach
Iksung Jin et al.
Proceedings of the National Academy of Sciences of the United States of America, 109(23), 9131-9136 (2012-05-24)
Long-term plasticity can differ from short-term in recruiting the growth of new synaptic connections, a process that requires the participation of both the presynaptic and postsynaptic components of the synapse. How does information about synaptic plasticity spread from its site
Bettina Fussbroich et al.
PloS one, 6(7), e21651-e21651 (2011-07-19)
The Enhancer of Zeste 2 (EZH2) protein has been reported to stimulate cell growth in some cancers and is therefore considered to represent an interesting new target for therapeutic intervention. Here, we investigated a possible role of EZH2 for the
Faisal Asghar Khattak et al.
BMC microbiology, 12, 204-204 (2012-09-13)
The genus Mycobacterium (M.) comprises highly pathogenic bacteria such as M. tuberculosis as well as environmental opportunistic bacteria called non-tuberculous mycobacteria (NTM). While the incidence of tuberculosis is declining in the developed world, infection rates by NTM are increasing. NTM
Bharat P Gurale et al.
The Journal of organic chemistry, 77(13), 5801-5807 (2012-06-06)
Concise and efficient syntheses of the aminocyclitol cores of hygromycin A (HMA) and methoxyhygromycin (MHM) have been achieved starting from readily available myo-inositol. Reductive cleavage of myo-inositol orthoformate to the corresponding 1,3-acetal, stereospecific introduction of the amino group via the
Bernd Becker et al.
ACS chemical biology, 8(1), 105-115 (2012-11-01)
Aminoglycoside antibiotics were among the first antibiotics discovered and used clinically. Although they have never completely fallen out of favor, their importance has waned due to the emergence of other broad-spectrum antibiotics with fewer side effects. Today, with the dramatically
Michael J McDonald et al.
Current biology : CB, 22(13), 1235-1240 (2012-06-26)
Mutation is the source of both beneficial adaptive variation and deleterious genetic load, fueling the opposing selective forces than shape mutation rate evolution. This dichotomy is well illustrated by the evolution of the mutator phenotype, a genome-wide 10- to 100-fold
Rengasamy Ramamoorthy et al.
Plant cell reports, 31(10), 1923-1931 (2012-06-27)
The increasing interest in renewable energy has attracted more research attention on biofuels. In order to generate sustainable amount of biomass feedstock from dedicated biofuel crops such as switchgrass they need to be genetically improved. Genetic transformation is one of
Iksung Jin et al.
Proceedings of the National Academy of Sciences of the United States of America, 109(23), 9137-9142 (2012-05-24)
Whereas short-term (minutes) facilitation at Aplysia sensory-motor neuron synapses is presynaptic, long-term (days) facilitation involves synaptic growth, which requires both presynaptic and postsynaptic mechanisms. How are the postsynaptic mechanisms recruited, and when does that process begin? We have been investigating
Sanjeev Kumar et al.
PloS one, 7(11), e48982-e48982 (2012-11-08)
Chronological aging of yeast cells is commonly used as a model for aging of human post-mitotic cells. The yeast Saccharomyces cerevisiae grown on glucose in the presence of ammonium sulphate is mainly used in yeast aging research. We have analyzed
Chun-Yu Zhang et al.
Yi chuan = Hereditas, 34(12), 1599-1606 (2012-12-25)
The decision of using selection marker is one of the key factors for success of plant genetic transformation and offspring screening. As two commonly used selection markers, hpt and bar genes are widely used in tissue culture-based rice transformation. To
Mauricio Niklitschek et al.
Methods in molecular biology (Clifton, N.J.), 898, 219-234 (2012-06-20)
Generally two selection markers are required to obtain homozygous mutations in a diploid background, one for each gene copy that is interrupted. In this chapter is described a method that allows the double gene deletions of the two copies of
Akane Kubota et al.
Bioscience, biotechnology, and biochemistry, 77(1), 167-172 (2013-01-08)
The thallus, the gametophyte body of the liverwort Marchantia polymorpha, develops clonal progenies called gemmae that are useful in the isolation and propagation of isogenic plants. Developmental timing is critical to Agrobacterium-mediated transformation, and high transformation efficiency has been achieved
Hyojin Kim et al.
PloS one, 8(2), e56476-e56476 (2013-02-27)
The ability to enrich cells with targeted mutations greatly facilitates the process of using engineered nucleases, including zinc-finger nucleases and transcription activator-like effector nucleases, to construct such cells. We previously used surrogate reporters to enrich cells containing nuclease-induced mutations via
Sabine Gruber et al.
BMC research notes, 5, 641-641 (2012-11-20)
Species of the fungal genus Trichoderma are important industrial producers of cellulases and hemicellulases, but also widely used as biocontrol agents (BCAs) in agriculture. In the latter function Trichoderma species stimulate plant growth, induce plant defense and directly antagonize plant
Yuko Konishi et al.
BioTechniques, 53(3), 141-152 (2012-09-12)
Gene targeting in a broad range of human somatic cell lines has been hampered by inefficient homologous recombination. To improve this technology and facilitate its widespread application, it is critical to first have a robust and efficient research system for
Senthilkumar Padmanaban et al.
Plant physiology, 144(1), 82-93 (2007-03-06)
Guard cell movement is induced by environmental and hormonal signals that cause changes in turgor through changes in uptake or release of solutes and water. Several transporters mediating these fluxes at the plasma membrane have been characterized; however, less is
Séverine Lorrain et al.
The Plant cell, 16(8), 2217-2232 (2004-07-23)
The hypersensitive response (HR) is a programmed cell death that is commonly associated with plant disease resistance. A novel lesion mimic mutant, vad1 (for vascular associated death1), that exhibits light conditional appearance of propagative HR-like lesions along the vascular system
Goetz Hensel et al.
BMC plant biology, 12, 171-171 (2012-09-26)
While the genetic transformation of the major cereal crops has become relatively routine, to date only a few reports were published on transgenic triticale, and robust data on T-DNA integration and segregation have not been available in this species. Here
Masayuki Nakamura et al.
Current microbiology, 65(2), 176-182 (2012-05-16)
Agrobacterium tumefaciens-mediated transformation (AtMT) has become a common technique for DNA transformation of yeast and filamentous fungi. In this study, we first established a protocol of AtMT for the phytopathogenic fungus Colletotrichum sansevieriae. Binary T-DNA vector containing the hygromycin B
M Cruz Muñoz-Centeno et al.
FEMS yeast research, 12(5), 511-520 (2012-03-16)
Using a yeast two-hybrid screen, we isolated a gene from Schizosaccharomyces pombe, whose product interacts with Mpg1, a GDP-mannose-1-phosphate guanylyltransferase involved in the maintenance of cell wall integrity and glycosylation. We have designated this gene mpg2 based on its similarity
Masatoshi Aida et al.
Proceedings of the National Academy of Sciences of the United States of America, 110(19), 7784-7789 (2013-04-24)
Somatic hypermutation (SHM) requires not only the expression of activation-induced cytidine deaminase, but also transcription in the target regions. However, how transcription guides activation-induced cytidine deaminase in targeting SHM to the Ig genes is not fully understood. Here, we found
Sung Ki Cho et al.
Proceedings of the National Academy of Sciences of the United States of America, 105(40), 15629-15634 (2008-09-24)
Abscission is a developmental program that results in the active shedding of infected or nonfunctional organs from a plant body. Here, we establish a signaling pathway that controls abscission in Arabidopsis thaliana from ligand, to receptors, to downstream effectors. Loss
A I Emets et al.
TSitologiia i genetika, 47(3), 14-20 (2013-07-05)
The results on in vitro culture establishment, plantlet regeneration and rooting of Camelina sativa cultivar sample Peremozhets and cultivar Mirazh are presented. Effective concentrations of sterilizing agents and duration of plant material treatment were estimated. Phytohormone ratio, sucrose concentration in
Jingli Yang et al.
Molecular biology reports, 40(1), 281-288 (2012-10-16)
An efficient transformation protocol was developed for Agrobacterium-mediated transformation of Phellodendron amurense Rupr. for using explants from mature seeds. The binary vector pCAMBIA1303, which contained hygromycin phosphotransferase (hptII) as a selectable marker gene and β-glucuronidase (GUS) as a reporter gene
Sandra Gouiaa et al.
Plant molecular biology, 79(1-2), 137-155 (2012-03-15)
Abiotic stress tolerance of plants is a very complex trait and involves multiple physiological and biochemical processes. Thus, the improvement of plant stress tolerance should involve pyramiding of multiple genes. In the present study, we report the construction and application
Detection of probable marker-free transgene-positive rice plants resistant to rice tungro disease from backcross progenies of transgenic Pusa Basmati 1.
Somnath Roy et al.
Journal of genetics, 91(2), 213-218 (2012-09-04)
Milena Szafraniec et al.
Dalton transactions (Cambridge, England : 2003), 41(32), 9728-9736 (2012-07-14)
Catalytic RNA molecules (ribozymes) have often been used for the testing of interactions of antibiotics with ribonucleic acids. We showed that the impact of capreomycin and hygromycin B on delta ribozyme catalysis might change dramatically, from stimulation to inhibition, depending
Ben-Jiang Ma et al.
PLoS pathogens, 7(9), e1002200-e1002200 (2011-09-13)
The HIV-1 gp41 envelope (Env) membrane proximal external region (MPER) is an important vaccine target that in rare subjects can elicit neutralizing antibodies. One mechanism proposed for rarity of MPER neutralizing antibody generation is lack of reverted unmutated ancestor (putative
Michael D Scahill et al.
Molecular and biochemical parasitology, 157(1), 73-82 (2007-11-17)
The limited repertoire of drug-resistance markers imposes a serious obstacle to genetic manipulation of Trypanosoma brucei. Here we describe experiments with a fusion protein that allows positive selection for genome integration followed by CRE recombinase-mediated excision of the marker cassette
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