How Welcoming Is Your Workspace?

How big is your organelle?

How big is your organelle? imple questions in cell biology seldom have simple answers, but on page 405, Marshall and Rosenbaum provide evidence for a strikingly straightforward mechanism for controlling the sizes of organelles. Determination of flagellar length in Chlamydomonas provides a tractable experimental system for studying organelle size S regulation, and Marshall and Rosenbaum found th...

How Large Is Your Graph?

We consider the problem of estimating the graph size, where one is given only local access to the graph. We formally define a query model in which one starts with a seed node and is allowed to make queries about neighbours of nodes that have already been seen. In the case of undirected graphs, an estimator of Katzir et al. (2014) based on a sample from the stationary distribution π uses O ( 1 ‖...

How old is your heart?

The traditional concept of the heart as a terminally differentiated postmitotic organ has been largely based on an influential study published in 1925 that reported the paucity or near-absence of cell division and mitosis in the human heart, which was in striking contrast with the regenerative capacity of eg, liver tissue.1 Additional arguments thought to support this concept are the absence of...

How old is your fold?

MOTIVATION At present there exists no age estimate for the different protein structures found in nature. It has become clear from occurrence studies that different folds arose at different points in evolutionary time. An estimation of the age of different folds would be a starting point for many investigations into protein structure evolution: how we arrived at the set of folds we see today. It...

How Orff is your Schulwerk?