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tag electrochemical gradients cell molecular biology ecology

Microfluidics: Biology’s Liquid Revolution
Laura Tran, PhD | Feb 26, 2024 | 8 min read
Microfluidic systems redefined biology by providing platforms that handle small fluid volumes, catalyzing advancements in cellular and molecular studies.
Making the Gradient
Karen Hopkin | May 25, 2011 | 9 min read
Ron Kaback didn’t believe that electrochemical gradients could power the transport of sugars and amino acids across cell membranes—until he proved that they do.
Making the Gradient
Karen Hopkin | May 1, 2011 | 9 min read
By Karen Hopkin Making the Gradient Ron Kaback didn’t believe that electrochemical gradients could power the transport of sugars and amino acids across cell membranes—until he proved that they do. H. RONALD KABACK Professor of Physiology University of California, Los Angeles F1000 Faculty Member: Neuronal Signaling Mechanisms Photo © 2011 Jim Cornfield Ron Kaback got hooked on membrane transport as a medical student at the Albert Einstei
A close up of several modular puzzle pieces.
Making Connections: Click Chemistry and Bioorthogonal Chemistry
Deanna MacNeil, PhD | Feb 13, 2024 | 5 min read
Simple, quick, and modular reactions allow researchers to create useful molecular structures from a wide range of substrates.
bacteria and DNA molecules on a purple background.
Engineering the Microbiome: CRISPR Leads the Way
Mariella Bodemeier Loayza Careaga, PhD | Mar 15, 2024 | 10+ min read
Scientists have genetically modified isolated microbes for decades. Now, using CRISPR, they intend to target entire microbiomes.
Weathering Hantavirus: Ecological Monitoring Provides Predictive Model
Steve Bunk | Jul 4, 1999 | 7 min read
Photo: Steve Bunk Dave Tinnin, field research associate in the University of New Mexico's biology department, takes blood samples and measurements of rodents caught on the research station grounds. At the end of a freeway exit near Soccoro, N.M., the hairpin turn onto a gravel road is marked by a sign that warns, "Wrong Way." But it isn't the wrong way if you want to reach the University of New Mexico's (UNM) long-term ecological research (LTER) station. The sign's subterfuge is the first indi
bacteria inside a biofilm
How Bacterial Communities Divvy up Duties
Holly Barker, PhD | Jun 1, 2023 | 10+ min read
Biofilms are home to millions of microbes, but disrupting their interactions could produce more effective antibiotics.
How Cells Find Their Way
Laura Defrancesco | Sep 2, 2001 | 5 min read
Organisms need to sense their environment. By sensing, they can develop, heal wounds, protect against invaders, and create blood vessels. Chemotaxis, or directional sensing, allows cells to detect chemicals with exquisite sensitivity. Some chemotactic cells can sense chemical gradients that differ by only a few percent from a cell's front to its back. Although discovery of the molecule types involved in chemotaxis, as with other kinds of cell signaling events, has mounted, the details of how thi
Surpassing the Law of Averages
Jeffrey M. Perkel | Sep 1, 2009 | 7 min read
By Jeffrey M. Perkel Surpassing the Law of Averages How to expose the behaviors of genes, RNA, proteins, and metabolites in single cells. By necessity or convenience, almost everything we know about biochemistry and molecular biology derives from bulk behavior: From gene regulation to Michaelis-Menten kinetics, we understand biology in terms of what the “average” cell in a population does. But, as Jonathan Weissman of the University of Califo
Cancer's Other Conduit
The Scientist Staff | Sep 7, 2003 | 7 min read
Courtesy of Elsevier  DEADLY SPREAD: A: an insulinoma (Ins) in a Rip1Tag2 transgenic mouse. LYVE-1 immunohistochemistry demonstrates the presence of lymphatic vessels in connective tissue, but not near islets of Langerhans. B: Rip1Tag2 mice were crossed with mice which overexpress VEGF-C in pancreatic b-cells. C: An insulinoma cell breaks through a lymphatic vessel. D: An intralymphatic tumor cell mass forms. E: In a lymph node, lymphocytes (L) are surrounded by tumor cells (T). F: Immunof

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