proteins

The Risky Value of Imperfection

February 27, 2012

By Rob Mitchum Cells, like people, are not perfect. If a cell’s primary responsibility is to produce proteins, then it makes a remarkable amount of mistakes in that job, with some studies estimating that an error appears in as many as 1 out of [Read more]

A Fickle Pump and its Protons

September 26, 2011

Like a basement in a flood plain, a cell needs a good pump. Cells must maintain a particular mix of ions inside their membrane walls, with low concentrations of sodium and high concentrations of potassium. The only problem is that cells are leaky, [Read more]