Open Access. Powered by Scholars. Published by Universities.®

Engineering Commons

Open Access. Powered by Scholars. Published by Universities.®

Articles 1 - 21 of 21

Full-Text Articles in Engineering

Consolidated Chamber Design And Protocol For Olfactory Conditioning Assay With Drosophila Melanogaster, Sasha Bronovitskiy, Andres Castillo, Michael Yan, Fang Ju Lin May 2023

Consolidated Chamber Design And Protocol For Olfactory Conditioning Assay With Drosophila Melanogaster, Sasha Bronovitskiy, Andres Castillo, Michael Yan, Fang Ju Lin

Journal of the South Carolina Academy of Science

The olfactory conditioning assay is widely used in Alzheimer’s disease research to quantify learning and memory in Drosophila melanogaster. The assay tests ability to recall an aversive conditioned stimulus of scent paired with electrical shock when presented a choice between shock-associated and unrelated scents. The T-maze, a commonly used apparatus for olfactory conditioning assays, employs an elevator mechanism to transfer live flies from the shock-delivering training chamber to the scent selection point. This elevator mechanism is known to cause fly casualty. T-mazes are not commercially available and often difficult to reproduce. Other existing variations of olfactory conditioning apparatuses use …


Table Of Contents Jun 2022

Table Of Contents

Journal of the South Carolina Academy of Science

No abstract provided.


Art Or Science?, Allison Marsh Jan 2014

Art Or Science?, Allison Marsh

Section 3: Imaging the Fast Moving

No abstract provided.


Conclusion Panel, Allison Marsh Jan 2012

Conclusion Panel, Allison Marsh

Section 6: Conclusion

No abstract provided.


Mapping The Ocean Frontier, Allison Marsh Jan 2012

Mapping The Ocean Frontier, Allison Marsh

Section 4: Imaging the Concealed

No abstract provided.


Spotlight On Usc: South Carolina Institute For Anthropology And Archaeology, Allison Marsh Jan 2012

Spotlight On Usc: South Carolina Institute For Anthropology And Archaeology, Allison Marsh

Section 4: Imaging the Concealed

No abstract provided.


Seeing With Sound, Allison Marsh Jan 2012

Seeing With Sound, Allison Marsh

Section 4: Imaging the Concealed

No abstract provided.


World Ocean Floor, Courtesy Of The Library Of Congress, Allison Marsh Jan 2012

World Ocean Floor, Courtesy Of The Library Of Congress, Allison Marsh

Section 4: Imaging the Concealed

No abstract provided.


Marie Tharp At Her Drafting Table, Courtesy Of The Lamont-Doherty Earth Observatory, Earth Institute, Columbia University, Allison Marsh Jan 2012

Marie Tharp At Her Drafting Table, Courtesy Of The Lamont-Doherty Earth Observatory, Earth Institute, Columbia University, Allison Marsh

Section 4: Imaging the Concealed

No abstract provided.


Why Do We Collect?, Allison Marsh Jan 2012

Why Do We Collect?, Allison Marsh

Section 2: Imaging the Microscopic

No abstract provided.


Imaging And Aesthetics, Allison Marsh Jan 2012

Imaging And Aesthetics, Allison Marsh

Section 2: Imaging the Microscopic

No abstract provided.


Capturing Motion, Allison Marsh Jan 2012

Capturing Motion, Allison Marsh

Section 3: Imaging the Fast Moving

No abstract provided.


Understanding Fracture, Allison Marsh Jan 2012

Understanding Fracture, Allison Marsh

Section 3: Imaging the Fast Moving

No abstract provided.


Listen, Allison Marsh Jan 2012

Listen, Allison Marsh

Section 3: Imaging the Fast Moving

No abstract provided.


Photographic Evidence, Allison Marsh Jan 2012

Photographic Evidence, Allison Marsh

Section 3: Imaging the Fast Moving

No abstract provided.


Spotlight On Usc: Mechanical Engineering, Allison Marsh Jan 2012

Spotlight On Usc: Mechanical Engineering, Allison Marsh

Section 3: Imaging the Fast Moving

No abstract provided.


Influencing Art, Allison Marsh Jan 2012

Influencing Art, Allison Marsh

Section 3: Imaging the Fast Moving

No abstract provided.


Spotlight On Usc: A.C. Moore Herbarium, Allison Marsh Jan 2012

Spotlight On Usc: A.C. Moore Herbarium, Allison Marsh

Section 2: Imaging the Microscopic

No abstract provided.


Observing The Minuscule, Allison Marsh Jan 2012

Observing The Minuscule, Allison Marsh

Section 2: Imaging the Microscopic

No abstract provided.


Structures Of Human Thymidylate Synthase R163k With Dump, Fdump And Glutathione Show Asymmetric Ligand Binding, Lydia M. Gibson, Lesa R. Celeste, Leslie L. Lovelace, Lukasz Lebioda Nov 2010

Structures Of Human Thymidylate Synthase R163k With Dump, Fdump And Glutathione Show Asymmetric Ligand Binding, Lydia M. Gibson, Lesa R. Celeste, Leslie L. Lovelace, Lukasz Lebioda

Faculty Publications

Thymidylate synthase (TS) is a well validated target in cancer chemotherapy. Here, a new crystal form of the R163K variant of human TS (hTS) with five subunits per asymmetric part of the unit cell, all with loop 181-197 in the active conformation, is reported. This form allows binding studies by soaking crystals in artificial mother liquors containing ligands that bind in the active site. Using this approach, crystal structures of hTS complexes with FdUMP and dUMP were obtained, indicating that this form should facilitate high-throughput analysis of hTS complexes with drug candidates. Crystal soaking experiments using oxidized glutathione revealed that …


Structure Of Human Thymidylate Synthase Under Low-Salt Conditions, Leslie L. Lovelace, Wladek Minor, Lukasz Lebioda Sep 2005

Structure Of Human Thymidylate Synthase Under Low-Salt Conditions, Leslie L. Lovelace, Wladek Minor, Lukasz Lebioda

Faculty Publications

Human thymidylate synthase, a target in cancer chemotherapy, was crystallized from PEG 3350 with 30 mM ammonium sulfate (AS) in the crystallization medium. The crystals are isomorphous with the high-salt crystals (~2.0 M AS) and the structure has been solved and refined (R = 22.6%, Rfree = 24.3%) at 1.8 Å resolution. The high- and low-AS-concentration structures are quite similar, with loop 181-197 is in the inactive conformation. Also, residues 95-106 and 129-135 (eukaryotic inserts region) show high mobility as assessed by poor electron density and high values of crystallographic temperature factors (residues 1-25 and 108-129 are disordered in both …