COLORADO SPRINGS, Colo., Sept. 7, 2010 (GLOBE NEWSWIRE) -- PSI Corp. (Pink Sheets:PSCP), operating as Pantel Systems, Inc. ("PSI" or "the Company"), today announced a joint marketing agreement with a ...

Photosystem I (PSI) is a reaction center associated with oxygenic photosynthesis. Unlike the monomeric reaction centers in green and purple bacteria, PSI forms trimeric complexes in most cyanobacteria ...