Mosquito salivary apyrase regulates blood meal hemostasis and drives malaria parasite transmission

To identify the putative salivary tPA activator, we fractionated salivary proteins by size-exclusion chromatography and identified fraction Z8 as the strongest tPA activator, whereas the adjacent fractions Z7 and Z9 activated tPA at lower levels. Mass spectrometry analysis of these fractions identified a total of 152 unique proteins.