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Other Biochemistry, Biophysics, and Structural Biology Commons™
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Articles 31 - 36 of 36
Full-Text Articles in Other Biochemistry, Biophysics, and Structural Biology
Editorial: Structure And Function Of Chloroplasts, Rebecca L. Roston, Juliette Jouhet, Fei Yu, Hongbo Gao
Editorial: Structure And Function Of Chloroplasts, Rebecca L. Roston, Juliette Jouhet, Fei Yu, Hongbo Gao
Department of Biochemistry: Faculty Publications
The primary energy resource of life on earth is the sun, whose energy is captured in the form of usable carbons by a process called photosynthesis. Photosynthesis occurs within a cellular organelle adapted to that purpose, called the chloroplast. Chloroplasts are unique metabolic and sensory organelles restricted to plants, algae, and a few protists. In this special topic, we aimed to gather new research, hypotheses, and reviews that would help us to better understand the important role of chloroplasts in all photosynthetic organisms. We were fortunate enough to have submissions from many talented chloroplast researchers. This topic contains a total …
Visualizing The Invisible: A Guide To Designing, Printing, And Incorporating Dynamic 3d Molecular Models To Teach Structure–Function Relationships, Michelle E. Howell, Karin V. Van Dijk, Christine S. Booth, Tomáš Helikar, Brian A. Couch, Rebecca Roston
Visualizing The Invisible: A Guide To Designing, Printing, And Incorporating Dynamic 3d Molecular Models To Teach Structure–Function Relationships, Michelle E. Howell, Karin V. Van Dijk, Christine S. Booth, Tomáš Helikar, Brian A. Couch, Rebecca Roston
Department of Biochemistry: Faculty Publications
Understanding the intricate relationship between macromolecular structure and function represents a central goal of undergraduate biology education (1–3). In teaching complex three-dimensional (3D) concepts, instructors typically depend on static two-dimensional (2D) textbook images or computer-based visualization software, which can lead to unintended misconceptions (4–6). While chemical and molecular kits exist, these models cannot handle the size and detail of macromolecules. Consequently, students may graduate in the life sciences without understanding how structure underlies function or acquiring skills to translate between 2D and 3D molecular models (5, 7).
Structural Basis For The Substrate Inhibition Of Proline Utilization A By Proline, David A. Korasick, Travis A. Pemberton, Benjamin W. Arentson, Donald F. Becker, John J. Tanner
Structural Basis For The Substrate Inhibition Of Proline Utilization A By Proline, David A. Korasick, Travis A. Pemberton, Benjamin W. Arentson, Donald F. Becker, John J. Tanner
Department of Biochemistry: Faculty Publications
Proline utilization A (PutA) is a bifunctional flavoenzyme that catalyzes the two-step oxidation of L-proline to L-glutamate using spatially separated proline dehydrogenase (PRODH) and L-glutamate-y-semialdehyde dehydrogenase (GSALDH) active sites. Substrate inhibition of the coupled PRODH-GSALDH reaction by proline is a common kinetic feature of PutAs, yet the structural basis for this phenomenon remains unknown. To understand the mechanism of substrate inhibition, we determined the 2.15 Å resolution crystal structure of Bradyrhizobium japonicum PutA complexed with proline. Proline was discovered in five locations remote from the PRODH active site. Most notably, strong electron density indicated that proline bound tightly to the …
Photosystem Ii Subunit S Overexpression Increases The Efficiency Of Water Use In A Field-Grown Crop, Katarzyna Glowacka, Johannes Kromdijk, Katherine Kucera, Jiayang Xie, Amanda P. Cavanagh, Lauriebeth Leonelli, Andrew D. B. Leakey, Donald R. Ort, Krishna K. Niyogi, Stephen P. Long
Photosystem Ii Subunit S Overexpression Increases The Efficiency Of Water Use In A Field-Grown Crop, Katarzyna Glowacka, Johannes Kromdijk, Katherine Kucera, Jiayang Xie, Amanda P. Cavanagh, Lauriebeth Leonelli, Andrew D. B. Leakey, Donald R. Ort, Krishna K. Niyogi, Stephen P. Long
Department of Biochemistry: Faculty Publications
Insufficient water availability for crop production is a mounting barrier to achieving the 70% increase in food production that will be needed by 2050. One solution is to develop crops that require less water per unit mass of production. Water vapor transpires from leaves through stomata, which also facilitate the influx of CO2 during photosynthetic assimilation. Here, we hypothesize that Photosystem II Subunit S (PsbS) expression affects a chloroplastderived signal for stomatal opening in response to light, which can be used to improve wateruse efficiency. Transgenic tobacco plants with a range of PsbS expression, from undetectable to 3.7 …
Simulation Of Stimulation: Cytokine Dosage And Cell Cycle Crosstalk Driving Timing-Dependent T Cell Differentiation, Matteo Barberis, Tomáš Helikar, Paul Verbruggen
Simulation Of Stimulation: Cytokine Dosage And Cell Cycle Crosstalk Driving Timing-Dependent T Cell Differentiation, Matteo Barberis, Tomáš Helikar, Paul Verbruggen
Department of Biochemistry: Faculty Publications
Triggering an appropriate protective response against invading agents is crucial to the effectiveness of human innate and adaptive immunity. Pathogen recognition and elimination requires integration of a myriad of signals from many different immune cells. For example, T cell functioning is not qualitatively, but quantitatively determined by cellular and humoral signals. Tipping the balance of signals, such that one of these is favored or gains advantage on another one, may impact the plasticity of T cells. This may lead to switching their phenotypes and, ultimately, modulating the balance between proliferating and memory T cells to sustain an appropriate immune response. …
Towards The Synthetic Design Of Camelina Oil Enriched In Tailored Acetyl-Triacylglycerols With Medium-Chain Fatty Acids, Sunil Bansal, Hae Jin Kim, Gunnam Na, Megan E. Hamilton, Edgar B. Cahoon, Chaofu Lu, Timothy P. Durrett
Towards The Synthetic Design Of Camelina Oil Enriched In Tailored Acetyl-Triacylglycerols With Medium-Chain Fatty Acids, Sunil Bansal, Hae Jin Kim, Gunnam Na, Megan E. Hamilton, Edgar B. Cahoon, Chaofu Lu, Timothy P. Durrett
Department of Biochemistry: Faculty Publications
The ability to manipulate expression of key biosynthetic enzymes has allowed the development of genetically modified plants that synthesise unusual lipids that are useful for biofuel and industrial applications. By taking advantage of the unique activities of enzymes from different species, tailored lipids with a targeted structure can be conceived. In this study we demonstrate the successful implementation of such an approach by metabolically engineering the oilseed crop Camelina sativa to produce 3-acetyl-1,2-diacyl-sn-glycerols (acetyl-TAGs) with medium-chain fatty acids (MCFAs). Different transgenic camelina lines that had been genetically modified to produce MCFAs through the expression of MCFA-specific thioesterases and …