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Temperature-sensitive Post-translational Regulation of Plant Omega-3 Fatty-acid Desaturases Is Mediated by the Endoplasmic Reticulum-associated Degradation Pathway
Article expressing two closely related plant FAD3 genes in yeast cells and found that their enzymes produced significantly different amounts of omega-3 fatty acids and that these differences correlated to differences in rates of protein turnover. The findings indicate that Fad3 protein abundance is regulated by a combination of cis-acting degradation signals and the ubiquitin-proteasome pathway and that modulation of Fad3 protein amounts in response to temperature may represent one mechanism of homeoviscous adaptation in plants.
Date:
July 9, 2010
Creator:
O'Quin, Jami B.; Bourassa, Linda; Zhang, Daiyuan; Shockey, Jay M.; Gidda, Satinder K.; Fosnot, Spencer et al.
Object Type:
Article
System:
The UNT Digital Library
Lipoxygenase-mediated Oxidation of Polyunsaturated N-Acylethanolamines in Arabidopsis
Article hypothesizing that lipoxygenase (LOX) participated in the metabolism of PU-NAEs through the formation of NAE-oxylipins. The data suggests that Arabidopsis LOXs indeed compete with FAAH to metabolize PU-NAEs during seedling establishment. Identification of endogenous amide-conjugated oxylipins suggests potential significance of these metabolites in vivo, and FAAH mutants may offer opportunities to address this in the future.
Date:
April 29, 2011
Creator:
Kilaru, Aruna; Herrfurth, Cornelia; Keereetaweep, Jantana; Hornung, Ellen; Venables, Barney J.; Feussner, Ivo et al.
Object Type:
Article
System:
The UNT Digital Library
The Transcriptional Co-activator MBF1c Is a Key Regulator of Thermotolerance in Arabidopsis thaliana
Article reporting that the highly conserved transcriptional co-activator, MBF1c (multiprotein bridging factor 1c), is a key regulator of thermotolerance in Arabidopsis thaliana. Results provide evidence for the existence of a tightly coordinated heat stress-response network, involving trehalose-, SA-, and ethylene-signaling pathways, that is under the control of MBF1c.
Date:
April 4, 2008
Creator:
Suzuki, Nobuhiro; Bajad, Sunil; Shuman, Joel; Shulaev, Vladimir & Mittler, Ron
Object Type:
Article
System:
The UNT Digital Library
Ascorbate Peroxidase 1 Plays a Key Role in the Response of Arabidopsis thaliana to Stress Combination
Article conducting proteomic and metabolic analysis of Arabidopsis thaliana plants subjected to a combination of drought and heat stress. The authors identify 45 different proteins that specifically accumulated in Arabidopsis in response to the stress combination. The findings suggest that cytosolic APX1 plays a key role in the acclimation of plants to a combination of drought and heat stress.
Date:
December 5, 2008
Creator:
Koussevitzky, Shai; Suzuki, Nobuhiro; Huntington, Serena; Armijo, Leigh; Sha, Wei; Cortes, Diego F. et al.
Object Type:
Article
System:
The UNT Digital Library
Visualization of Lipid Droplet Composition by Direct Organelle Mass Spectrometry
Article reporting an approach that combines the visualization of individual lipid droplets (LDs), microphase extraction of lipid components from droplets, and the direct identification of lipid composition by nanospray mass spectrometry, even to the level of a single LD. The triacylglycerol (TAG) composition of LDs from several plant sources (mature cotton (Gossypium hirsutum) embryos, roots of cotton seedlings, and Arabidopsis thaliana seeds and leaves) were examined by direct organelle mass spectrometry and revealed the heterogeneity of LDs derived from different plant tissue sources.
Date:
February 4, 2011
Creator:
Horn, Patrick J.; Ledbetter, Nicole R.; James, Christopher N.; Hoffman, William D.; Case, Charlene R.; Verbeck, Guido F. et al.
Object Type:
Article
System:
The UNT Digital Library
Compartmentation of Triacylglycerol Accumulation in Plants
Article studying an underappreciated complexity in pathways for synthesis and accumulation of Triacylglycerols from plants, familiar to most people as vegetable oils.
Date:
January 20, 2012
Creator:
Chapman, Kent Dean & Ohlrogge, John B.
Object Type:
Article
System:
The UNT Digital Library
The EAR-motif of the Cys2/His2-type Zinc Finger Protein Zat7 Plays a Key Role in the Defense Response of Arabidopsis to Salinity Stress
Article reporting that transgenic Arabidopsis plants constitutively expressing the Cys2/His2 zinc finger protein Zat7 have suppressed growth and are more tolerant to salinity stress. Findings demonstrate that the EAR-domain of Cys2/His2-type zinc finger proteins plays a key role in the defense response of Arabidopsis to abiotic stresses.
Date:
March 23, 2007
Creator:
Ciftci-Yilmaz, Sultan; Morsy, Mustafa R.; Song, Luhua; Coutu, Alicia; Krizek, Beth A.; Lewis, Michael W. et al.
Object Type:
Article
System:
The UNT Digital Library
Unraveling Δ1-Pyrroline-5-Carboxylate-Proline Cycle in Plants by Uncoupled Expression of Proline Oxidation Enzymes
Article showing that overexpression of MsProDH in tobacco and Arabidopsis or impairment of P5C oxidation in the Arabidopsis p5cdh mutant did not change the cellular Pro to P5C ratio under ambient and osmotic stress conditions, indicating that P5C excess was reduced to Pro in a mitochondrial-cytosolic cycle. Results show that normal oxidation of P5C to Glu by P5CDH is key to prevent P5C-Pro intensive cycling and avoid ROS production from electron run-off.
Date:
September 25, 2009
Creator:
Miller, Gad; Honig, Arik; Stein, Hanan; Suzuki, Nobuhiro; Mittler, Ron & Zilberstein, Aviah
Object Type:
Article
System:
The UNT Digital Library
Mutations in Arabidopsis Fatty Acid Amide Hydrolase Reveal That Catalytic Activity Influences Growth but Not Sensitivity to Abscisic Acid or Pathogens
Article showing that the enhanced growth and NAE tolerance of the AtFAAH overexpressing seedlings depends on the catalytic activity of AtFAAH, hypersensitivity to ABA and hypersusceptibility to nonhost pathogens are independent of its enzymatic activity. Findings suggest that the AtFAAH influences plant growth and interacts with ABA signaling and plant defense through distinctly different mechanisms.
Date:
December 4, 2009
Creator:
Kim, Sang-Chul; Kang, Li; Nagaraj, Satish; Blancaflor, Elison B.; Mysore, Kirankumar S. & Chapman, Kent D.
Object Type:
Article
System:
The UNT Digital Library
Activation of an S6/H4 Kinase (PAK 65) from Human Placenta by Intramolecular and Intermolecular Autophosphorylation
Article proposing a model in which phosphorylation of sites 1 and 2 occurs sequentially. The model proposes that trypsin treatment of the inactive holoenzyme removes an inhibitory rac-binding domain which blocks MgATP access to the catalytic site. The pseudosubstrate domain at site 1 is autophosphorylated and subsequent bimolecular autophosphorylation at site 2 fully opens the catalytic site.
Date:
September 8, 1995
Creator:
Benner, Gretchen E.; Dennis, Patrick B. & Masaracchia, Ruthann A.
Object Type:
Article
System:
The UNT Digital Library
Phosphorylation of Myosin Light Chain Kinase by p21-activated Kinase PAK2
Article reporting that PAK2, a member of the Rho family of GTPase-dependent kinases, regulates isometric tension development and myosin II RLC phosphorylation in saponin permeabilized endothelial monolayers. The results demonstrate that PAK2 can directly phosphorylate MLCK, inhibiting its activity and limiting the development of isometric tension.
Date:
June 16, 2000
Creator:
Goeckeler, Zoe M.; Masaracchia, Ruthann A.; Zeng, Qi; Chew, Teng-Leong; Gallagher, Patricia & Wysolmerski, Robert B.
Object Type:
Article
System:
The UNT Digital Library
Evaluation of Threshold Selection Methods for Adaptive Kernel Density Estimation in Disease Mapping
This article assesses the relative performance of threshold selection methods in terms of resolution and reliability for disease mapping.
Date:
May 8, 2018
Creator:
Ruckthongsook, Warangkana; Tiwari, Chetan; Oppong, Joseph R. & Natesan, Prathiba
Object Type:
Article
System:
The UNT Digital Library
Inhibition of Very Long Chain Fatty Acids Synthesis Mediates PI3P Homeostasis at Endosomal Compartments
This article uses metazachlor, an inhibitor of VLCFA synthesis, to find that VLCFAs are involved in the TGN/MVB distribution of PI3P. This effect is independent from either synthesis of PI3P by PI3-kinase or degradation of PI(3,5)P2 into PI3P by the SUPPRESSOR OF ACTIN1 (SAC1) phosphatase. Results suggest that PI3P might be transferable from TGN to MVBs and that VLCFAs act in this process.
Date:
August 6, 2021
Creator:
Ito, Yoko; Esnay, Nicolas; Fougère, Louise; Platre, Matthieu Pierre; Cordelières, Fabrice; Jaillais, Yvon et al.
Object Type:
Article
System:
The UNT Digital Library
Application of Genome Editing in Tomato Breeding: Mechanisms, Advances, and Prospects
This article is a review presenting examples of gene editing responsible for conferring both biotic and abiotic stresses in tomato simultaneously. The literature on using this powerful technology to improve fruit quality, yield, and nutritional aspects in tomato is highlighted.
Date:
January 12, 2021
Creator:
Salava, Hymavathi; Thula, Sravankumar; Mohan, Vijee; Kumar, Rahul & Maghuly, Fatemeh
Object Type:
Article
System:
The UNT Digital Library
Form and Function of the Vertebrate and Invertebrate Blood-Brain Barriers
Article reviewing blood-brain barriers (BBBs) in their various forms in both invertebrates and vertebrates, with an emphasis on the function, evolution, and conditional relevance of popular animal models such as the fruit fly and the zebrafish to mammalian BBB research.
Date:
November 9, 2021
Creator:
Dunton, Alicia D.; Göpel, Torben; Ho, Dao H. & Burggren, Warren W.
Object Type:
Article
System:
The UNT Digital Library
An Arabidopsis Oxalyl-CoA Decarboxylase, AtOXC, Is Important for Oxalate Catabolism in Plants
This article identifies, in Arabidopsis, an oxalyl-CoA decarboxylase (AtOXC) that is capable of catalyzing the second step in the proposed pathway of oxalate catabolism.
Date:
March 23, 2021
Creator:
Foster, Justin; Cheng, Ninghui; Paris, Vincent; Wang, Lingfei; Wang, Jin; Wang, Xiaoqiang et al.
Object Type:
Article
System:
The UNT Digital Library
Machine Learning Quantitative Structure–Property Relationships as a Function of Ionic Liquid Cations for the Gas-Ionic Liquid Partition Coefficient of Hydrocarbons
This article presents a study with the aim to develop quantitative structure–property relationships (QSPRs) that would allow the understanding of molecular interactions in ionic liquids based on the structure of the cationic moiety.
Date:
July 7, 2022
Creator:
Toots, Karl Marti; Sild, Sulev; Leis, Jaan; Acree, William E. (William Eugene) & Maran, Uko, 1966-
Object Type:
Article
System:
The UNT Digital Library
Molecular cloning and characterization of a gene encoding pea cytosolic ascorbate peroxidase
Article isolating a gene encoding cytosolic bate peroxidase (ApxI) from pea (Pisum sativum L.) and determining its nucleotide sequence.
Date:
October 25, 1992
Creator:
Mittler, Ron & Zilinskas, B.A.
Object Type:
Article
System:
The UNT Digital Library
Activation of an S6 Kinase From Human Placenta by Autophosphorylation
Article describing a novel S6 kinase isolated from human placenta which autoactivates through autophosphorylation in vitro. The data supports the hypothesis that this previously uncharacterized S6 kinase belongs to a unique family of protein kinases which utilize autophosphorylation as part of their in vivo activation mechanism.
Date:
September 15, 1993
Creator:
Dennis, Patrick B. & Masaracchia, Ruthann A.
Object Type:
Article
System:
The UNT Digital Library
Multisite phosphorylation of a synthetic peptide derived from the carboxyl terminus of the ribosomal protein S6
Article synthesizing and testing the synthetic peptide AKRRRLSSLRASTSKSESSQK (56-21) which corresponds to the carboxyl-terminal 21 amino acids of human ribosomal protein S6 as a substrate for S6/H4 kinase purified from human placenta. The data suggests that multiple S6 kinases may be required to phosphorylate S6 at all five sites which are modified in vivo.
Date:
January 5, 1991
Creator:
Brandon, Stanley D. & Masaracchia, Ruthann A.
Object Type:
Article
System:
The UNT Digital Library
Underlying Ossification Phenotype in a Murine Model of Metastatic Synovial Sarcoma
This article presents the analysis of genetic mouse models of synovial sarcoma to determine the extent of ossification in the tumors and its relationship with morbidity. The authors noted higher ossification within their metastatic mouse model of synovial sarcoma. Their conclusion is that both metastasis and ossification are dependent on time, but that they are independent of one another.
Date:
April 10, 2020
Creator:
Kirkham, Matthew; Kalivas, Austen; Fatema, Kaniz; Luelling, Sarah; Dubansky, Brooke H.; Dubansky, Benjamin et al.
Object Type:
Article
System:
The UNT Digital Library
Comparative Proteomics Analysis Reveals Unique Early Signaling Response of Saccharomyces cerevisiae to Oxidants with Different Mechanism of Action
This article uses a discovery driven comparative proteomics analysis to reveal unique early signaling response of the yeast Saccharomyces cerevisiae on the proteome level to oxidants with a different mechanism of action as early as 3 min after treatment with four oxidants, namely H₂O₂, cumene hydroperoxide (CHP), and menadione and diamide, when protein abundances were compared using label-free quantification relying on a high-resolution mass analyzer (Orbitrap).
Date:
December 26, 2020
Creator:
Pandey, Prajita; Zaman, Khadiza; Prókai, László, 1958- & Shulaev, Vladimir
Object Type:
Article
System:
The UNT Digital Library
Shining Light on Chitosan: A Review on the Usage of Chitosan for Photonics and Nanomaterials Research
This article highlights the different molecular-nano systems that are prepared or stabilized using the Chitosan polymer.
Date:
June 17, 2018
Creator:
Marpu, Sreekar & Benton, Erin N.
Object Type:
Article
System:
The UNT Digital Library
An Evaluation of Northern Bobwhite Conservation Research: A Call for Large-Scale Studies
This paper reviews current and historical studies that have facilitated the implementation of management techniques on multiple scales.
Date:
July 25, 2017
Creator:
Gomez, Lex J. & Reyna, Kelly S.
Object Type:
Paper
System:
The UNT Digital Library