At physiological pH, phosphatidylinositol would exist mainly as a species with a net charge of:

Name: At physiological pH, phosphatidylinositol would exist mainly as a species with a net charge of:
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Phosphatidylinositol has a negatively charged phosphate head group (-1) and a nonpolar fatty acid tail group (0). At physiological pH (around 7.4), the pKa of the phosphate group is around 7, which means it will be mostly deprotonated, resulting in a charge of -1.

At Physiological PH, Phosphatidylinositol Would Exist Mainly as a Species