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Charlie Johnson

As seen in: Nature, The Waltham Times
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Articles

Blue Collar 101: Waltham museum panel makes the case for a railroad career

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By Charlie Johnson
| The Waltham Times Verified
Charles River Museum’s Director of Education Steve Guerriero moderates a panel of railroad professionals featuring dispatcher Sarah Gouthro, conductor Cole Czub, locomotive engineer Bill Keay, MBTA supervisor Adam Sisk and machinist Joseph Rumrey. Czub is pictured speaking. Photo by Gab De Jesus.
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Using enantioselective biosensors to evolve asymmetric biocatalysts

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By Simon d’Oelsnitz, Wantae Kim, Nicole Zhao, Haley A. Hardtke, Svetlana P. Ikonomova, Nina Alperovich, Olga N. Vasilyeva, Michael James, Michael Cory, Charlie Johnson, Andrew D Ellington, Quincey Justman, Michael Springer, Y. Zhang, Pamela Silver, David Ross, Eric S. Zigon
| Nature Verified
Abstract Biocatalysts are prized for their enantioselectivity, but slow chromatographic separations required to measure enantiomeric excess bottleneck their development. To overcome this limitation, we evolve enantioselective transcription factors (eTFs) that convert enzyme-catalyzed enantiomer concentrations into programmable gene expression outputs, focusing on imine reductases.
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Housing Authority receives clean audit; Marguerite Avenue units remain in limbo

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By Charlie Johnson
| The Waltham Times Verified
The Waltham Housing Authority received a clean federal audit, while the future of two Marguerite Avenue properties remains unresolved as the board awaits further direction from the state Department of Mental Health. At Tuesday’s Board of Commissioners meeting, Executive Director John Gollinger said he was pleased that the financial audit produced no findings. “It’s sort of like getting an A,” Gollinger said.
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