A cool picture of the hexameric enzyme Quinolinate Phosphoribosyl Transferase (QAPRTase) of S. cerevisiae showing its electrostatics intimacy. Blue are +, red and – and the field-lines are displayed. The very interesting thing here is that the field-lines are rooted from each active site outside area (6 of them). I used ABPS for the electrostatic calculations and VMD 1.8.7-alpha to visualize. The substrates Quinolinate and PRPP are basically sucked-in into the active sites following the electrostatic field-lines. It is an obvious result, but those kind of analysis are cool don’t you think ? So…what about the release of the product synthesized ?