The procyclin-associated genes (PAGs) in Trypanosoma brucei
The EP and GPEET procyclins of Trypanosoma brucei are the surface glycoproteins of parasites in the midgut of tsetse flies (Glossina sp.). The procyclin genes are at the beginning of polycistronic transcription units and are followed by at least one procyclin-associated gene (PAG). Whereas the procyclin genes are highly expressed at all levels of gene expression, PAG mRNA levels are ...