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Articles 1 - 17 of 17
Full-Text Articles in Molecular Biology
Web-Based Arabidopsis Functional And Structural Genomics Resources, Yan Lu, Robert Last
Web-Based Arabidopsis Functional And Structural Genomics Resources, Yan Lu, Robert Last
Yan Lu
No abstract provided.
Curriculum Vitae, Robert P. Lane
The Role Of Gtp Binding And Hydrolysis At The Attoc159 Preprotein Receptor During Protein Import Into Chloroplasts, Danny Schnell, F. Wang, B. Agne, F. Kessler
The Role Of Gtp Binding And Hydrolysis At The Attoc159 Preprotein Receptor During Protein Import Into Chloroplasts, Danny Schnell, F. Wang, B. Agne, F. Kessler
Danny Schnell
The majority of nucleus-encoded chloroplast proteins are targeted to the organelle by direct binding to two membrane-bound GTPase receptors, Toc34 and Toc159. The GTPase activities of the receptors are implicated in two key import activities, preprotein binding and driving membrane translocation, but their precise functions have not been defined. We use a combination of in vivo and in vitro approaches to study the role of the Toc159 receptor in the import reaction. We show that atToc159-A864R, a receptor with reduced GTPase activity, can fully complement a lethal insertion mutation in the ATTOC159 gene. Surprisingly, the atToc159-A864R receptor increases the rate …
Psf2 Plays Important Roles In Normal Eye Development In Xenopus Laevis, Brian Walter, Kimberly Perry, Lisa Fukui, Erica Malloch, Jason Weaver, Jonathan Henry
Psf2 Plays Important Roles In Normal Eye Development In Xenopus Laevis, Brian Walter, Kimberly Perry, Lisa Fukui, Erica Malloch, Jason Weaver, Jonathan Henry
Brian Walter
No abstract provided.
Writing Research Proposal: Literature Review And Database Search, Mamoudou H. Dicko Prof.
Writing Research Proposal: Literature Review And Database Search, Mamoudou H. Dicko Prof.
Pr. Mamoudou H. DICKO, PhD
Gene Alterations By Peroxisome Proliferator-Activated Receptor Gamma Agonists In Human Colorectal Cancer Cells, Maria Cekanova, J Yuan, X Li, K B. Kim, Seung J. Baek
Gene Alterations By Peroxisome Proliferator-Activated Receptor Gamma Agonists In Human Colorectal Cancer Cells, Maria Cekanova, J Yuan, X Li, K B. Kim, Seung J. Baek
Maria Cekanova MS, RNDr, PhD
The peroxisome proliferator-activated receptor gamma (PPARgamma) is a nuclear transcription factor that controls the genes involved in metabolism and carcinogenesis. In the present study, we examined the alteration of gene expression in HCT-116 human colorectal cancer cells by PPARgamma agonists: MCC-555 (5 microM), rosiglitazone (5 microM), and 15-deoxy-Delta12,14-prostaglandin J2 (1 microM). The long-oligo microarray data revealed a list of target genes commonly induced (307 genes) and repressed (32 genes) by tested PPARgamma agonists. These genes were analyzed by Onto-Express software and KEGG pathway analysis and revealed that PPARgamma agonists are involved in cell proliferation, focal adhesion, and several signaling pathways. …
New Connections Across Pathways And Cellular Processes: Industrialized Mutant Screening Reveals Novel Associations Between Diverse Phenotypes In Arabidopsis, Yan Lu, Linda Savage, Imad Ajjawi, Kathreen Imre, David Yoder, Christoph Benning, Dean Dellapenna, John Ohlrogge, Katherine Osteryoung, Andreas Weber, Curtis Wilkerson, Robert Last
New Connections Across Pathways And Cellular Processes: Industrialized Mutant Screening Reveals Novel Associations Between Diverse Phenotypes In Arabidopsis, Yan Lu, Linda Savage, Imad Ajjawi, Kathreen Imre, David Yoder, Christoph Benning, Dean Dellapenna, John Ohlrogge, Katherine Osteryoung, Andreas Weber, Curtis Wilkerson, Robert Last
Yan Lu
No abstract provided.
Heat Shock Protein 101 Effects In A. Thaliana: Genetic Variation, Fitness And Pleiotropy In Controlled Temperature Conditions., S. J. Tonsor, C. Scott, I. Boumaza, Elizabeth Vierling
Heat Shock Protein 101 Effects In A. Thaliana: Genetic Variation, Fitness And Pleiotropy In Controlled Temperature Conditions., S. J. Tonsor, C. Scott, I. Boumaza, Elizabeth Vierling
Elizabeth Vierling
The Hsp100/ClpB heat shock protein family is ancient and required for high temperature survival, but natural variation in expression and its phenotypic effects is unexplored in plants. In controlled environment experiments, we examined the effects of variation in the Arabidopsis cytosolic AtHsp101 (hereafter Hsp101). Ten wild-collected ecotypes differed in Hsp101 expression responses across a 22 to 40 degrees C gradient. Genotypes from low latitudes expressed the least Hsp101. We tested fitness and pleiotropic consequences of varying Hsp101 expression in 'control' vs. mild thermal stress treatments (15/25 degrees C D/N vs. 15/25 degrees D/N plus 3 h at 35 degrees C …
Modulation Of Nitrosative Stress By S-Nitrosoglutathione Reductase Is Critical For Thermotolerance And Plant Growth In Arabidopsis, Ung Lee, Chris Wie, Bernadette O. Fernandez, Martin Feelisch, Elizabeth Vierling
Modulation Of Nitrosative Stress By S-Nitrosoglutathione Reductase Is Critical For Thermotolerance And Plant Growth In Arabidopsis, Ung Lee, Chris Wie, Bernadette O. Fernandez, Martin Feelisch, Elizabeth Vierling
Elizabeth Vierling
Nitric oxide (NO) is a key signaling molecule in plants. This analysis of Arabidopsis thaliana HOT5 (sensitive to hot temperatures), which is required for thermotolerance, uncovers a role of NO in thermotolerance and plant development. HOT5 encodes S-nitrosoglutathione reductase (GSNOR), which metabolizes the NO adduct S-nitrosoglutathione. Two hot5 missense alleles and two T-DNA insertion, protein null alleles were characterized. The missense alleles cannot acclimate to heat as dark-grown seedlings but grow normally and can heat-acclimate in the light. The null alleles cannot heat-acclimate as light-grown plants and have other phenotypes, including failure to grow on nutrient plates, increased reproductive shoots, …
Microproteomics: Analysis Of Protein Diversity In Small Samples, Howard B. Gutstein, Jeffrey S. Morris, Suresh P. Annangudi, Jonathan V. Sweedler
Microproteomics: Analysis Of Protein Diversity In Small Samples, Howard B. Gutstein, Jeffrey S. Morris, Suresh P. Annangudi, Jonathan V. Sweedler
Jeffrey S. Morris
Proteomics, the large-scale study of protein expression in organisms, offers the potential to evaluate global changes in protein expression and their post-translational modifications that take place in response to normal or pathological stimuli. One challenge has been the requirement for substantial amounts of tissue in order to perform comprehensive proteomic characterization. In heterogeneous tissues, such as brain, this has limited the application of proteomic methodologies. Efforts to adapt standard methods of tissue sampling, protein extraction, arraying, and identification are reviewed, with an emphasis on those appropriate to smaller samples ranging in size from several microliters down to single cells. The …
Core Genome Responses Involved In Acclimation To High Temperature, Jane Larkindale, Elizabeth Vierling
Core Genome Responses Involved In Acclimation To High Temperature, Jane Larkindale, Elizabeth Vierling
Elizabeth Vierling
Plants can acclimate rapidly to environmental conditions, including high temperatures. To identify molecular events important for acquired thermotolerance, we compared viability and transcript profiles of Arabidopsis thaliana treated to severe heat stress (45°C) without acclimation or following two different acclimation treatments. Notably, a gradual increase to 45°C (22°C to 45°C over 6 h) led to higher survival and to more and higher-fold transcript changes than a step-wise acclimation (90 min at 38°C plus 120 min at 22°C before 45°C). There were significant differences in the total spectrum of transcript changes in the two treatments, but core components of heat acclimation …
Analogy Of Issr And Rapd Markers For Comparative Analysis Of Genetic Diversity Among Different Jatropha Curcas Genotypes, Shailesh K. Tiwari Dr.
Analogy Of Issr And Rapd Markers For Comparative Analysis Of Genetic Diversity Among Different Jatropha Curcas Genotypes, Shailesh K. Tiwari Dr.
Shailesh K Tiwari Dr.
The phylogenetic relationships of 13 Jatropha genotypes from different parts of the India were analysed using 34 polymerase chain reaction (PCR) markers (20 random amplified polymorphic DNAs (RAPDs) and 14 inter simple sequence repeats (ISSRs)). Amplification of genomic DNA of the 13 genotypes, using RAPD analysis, yielded 107 fragments that could be scored, of which 91 were polymorphic, with an average of 4.55 polymorphic fragments per primer. Number of amplified fragments ranged from one (OPA20, OPB19, OPD13) to nine (OPA18) and which varied in size from 200 to 2,500 bp. Percentage of polymorphism ranged from 40% (OPB18) to a maximum …
A Kinetic Model For Growth And Biosynthesis Of Medium-Chain-Length Poly-(3-Hydroxyalkanoates) In Pseudomonas Putida, Irene Tan Kit Ping
A Kinetic Model For Growth And Biosynthesis Of Medium-Chain-Length Poly-(3-Hydroxyalkanoates) In Pseudomonas Putida, Irene Tan Kit Ping
Irene Tan Kit Ping
A kinetic model is presented giving a mathematical description of batch culture of Pseudomonas putida PGA1 grown using saponified palm kernel oil as carbon source and ammonium as the limiting nutrient. The growth of the micro-organism is well-described using. Tessier-type model which takes into account the inhibitory effect of ammonium at high concentrations. The ammonium consumption rate by the cells is related ill proportion to the rate of growth. The intracellular production of medium-chain-length poly(3-hydroxyalkanoates) (PHA(MCL)) by P. putida PGA1 cells is reasonably modeled by the modified Luedeking-Piret kinetics, which incorporate a function of product Synthesis inhibition (or reduction) by …
Mechanism Of High-Mobility Group Protein B Enhancement Of Progesterone Receptor Sequence-Specific Dna Binding, James S. Adelman, Sarah C. Roemer, Mair E.A. Churchill, Dean P. Edwards
Mechanism Of High-Mobility Group Protein B Enhancement Of Progesterone Receptor Sequence-Specific Dna Binding, James S. Adelman, Sarah C. Roemer, Mair E.A. Churchill, Dean P. Edwards
James S. Adelman
The DNA-binding domain (DBD) of progesterone receptor (PR) is bipartite containing a zinc module core that interacts with progesterone response elements (PRE), and a short flexible carboxyl terminal extension (CTE) that interacts with the minor groove flanking the PRE. The chromosomal high-mobility group B proteins (HMGB), defined as DNA architectural proteins capable of bending DNA, also function as auxiliary factors that increase the DNA-binding affinity of PR and other steroid receptors by mechanisms that are not well defined. Here we show that the CTE of PR contains a specific binding site for HMGB that is required for stimulation of PR-PRE …
Arabidopsis Tic40 Expression In Tobacco Chloroplasts Results In Massive Proliferation Of The Inner Envelope Membrane And Upregulation Of Associated Proteins, Danny Schnell, N. D. Singh, M. Li, S. B. Lee, H Daniell
Arabidopsis Tic40 Expression In Tobacco Chloroplasts Results In Massive Proliferation Of The Inner Envelope Membrane And Upregulation Of Associated Proteins, Danny Schnell, N. D. Singh, M. Li, S. B. Lee, H Daniell
Danny Schnell
The chloroplast inner envelope membrane (IM) plays essential roles in lipid synthesis, metabolite transport, and cellular signaling in plants. We have targeted a model nucleus-encoded IM protein from Arabidopsis thaliana, pre-Tic40-His, by relocating its expression from the nucleus to the chloroplast genome. Pre-Tic40-His was properly targeted, processed, and inserted. It attained correct topology and was folded and assembled into a TIC complex, where it accounted for up to 15% of the total chloroplast protein. These results confirm the existence of a novel pathway for protein targeting to the IM. Tic40-His overexpression resulted in a massive proliferation of the IM (up …
Auto-Hydroxylation Of Fih-1: An Fe(Ii), Α-Ketoglutarate-Dependent Human Hypoxia Sensor, Yuan-Han Chen, Lindsay M. Comeaux, Stephen J. Eyles, Michael J. Knapp
Auto-Hydroxylation Of Fih-1: An Fe(Ii), Α-Ketoglutarate-Dependent Human Hypoxia Sensor, Yuan-Han Chen, Lindsay M. Comeaux, Stephen J. Eyles, Michael J. Knapp
Stephen J. Eyles
HIF-asparaginyl hydroxylase (FIH-1) normally couples O(2)-activation to hydroxylation of Asn(803) on the alpha-subunit of the hypoxia-inducible factor (HIFalpha), a key step in pO(2) sensing; in the absence of HIFalpha, O(2)-activation becomes uncoupled, leading to self-hydroxylation at Trp(296) and a purple Fe(iii)-O-Trp chromophore-this alternative reactivity may affect human hypoxia sensing.
Important, But Odd And Obscure, Reasons To Use The Library, Maxine G. Schmidt
Important, But Odd And Obscure, Reasons To Use The Library, Maxine G. Schmidt
Maxine G Schmidt
No abstract provided.