What does EF-2 stand for?

Using candidate gene sequencing and methods of standard population genetics, we further pinpointed the mutation to a single nucleotide change in a gene, called protein Eukaryotic translation elongation factor 2, EEF2 for short.

The SS1P molecule is an ingenious example of protein engineering: the native Pseudomonas exotoxin protein consists of three domains: domain I targets cell surface receptors, domain II functions to translocate the molecule across a cell membrane and into the cell interior, and domain III catalyzes irreversible ADP ribosylation and inactivation of elongation factor 2 (EF2).