Science news articles about 'checkpoint mechanisms'

... , is controlled by a complex concert of enzymes and other components. In addition there are "checkpoint" mechanisms that can block continuation of the process if something goes amiss. Via mechanisms ...

... and worn-out tissues. Yamashita and her colleagues have not yet identified the molecules that form the checkpoint mechanism. But they've seen it at work in adult stem cells of the fruit-fly testes, ...

... structures disable cellular checkpoints "Our cells have evolved elaborate 'checkpoint' mechanisms to detect replication blocks and trigger the instant 'restart' of DNA replication there," said ...

... find their right partner." She also showed that a motor protein called dynein is necessary for this checkpoint mechanism. "When you get rid of dynein, the homologs pair, though more slowly, but ...