Description | GEMMA is a method to study protein complexes in solution: a diluted protein sample is transmitted into the gas phase by a charged reduced electrospray process. The generated particles, each containing one protein molecule with a +1 charge, are separated according to size in a differential mobility analyzer and subsequently quantified by a particle counter. In contrast to mass spectrometry, this method is run at atmospheric pressure and measures the diameter of the particle rather than the mass. | Namespace | PSI-MI |
Obsolete | false |