"cells" tag
Enzymes are often thought to be specific, catalysing only one reaction in a cell (left), but some more promiscuous enzymes have many functions and catalyse many reactions in a cell. Credit: Courtesy of Systems Biology Research Group, UC San Diego, Jacobs School of Engineering

Why are some enzymes so promiscuous?

Enzymes are meant to be specific, right?

Trout are sensitive to magnetic fields. Image: Shutterstock

Rotating cells allow animals to sense Earths’ magnetic fields

Scientists have discovered the elusive cells responsible for the sense of magnetoreception in trout noses.

Salmonella typhimurium (red) invades cultured human cells in this colour-enhanced scanning electron micrograph. Credit: Rocky Mountain Laboratories, NIAID, NIH

Dangerous salmonella discovered

Scientists have discovered hypervirulent salmonella bacteria.

One cell shows the large clusters, while the other cell, which also has mutant Huntington proteins, has not formed visible clusters. Image: Danny Hatters.

Tracking proteins provides an insight into brain diseases

Scientists can now track proteins that are behaving badly in cases of brain disease.

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