Preheat the oven to 350 degrees.
Grease and flour a bundt pan.
Mix together the flour, baking powder, baking soda, and salt. Set aside.
Beat the butter and sugar on medium-high for about 3 minutes.
Add your eggs 1 at a time, beating after each addition.
Continue beating adding a bit of the flour mixture to the egg mixture in intervals, a bit at a time.
Add the lemon juice, zest, vanilla, and sour cream. Gently stir these into the batter with a spatula or wooden spoon.
Gently fold in the blueberries.
Spread the batter into the prepared bundt pan.
Bake for 60 minutes, check for doneness. If a knife in the center doesn't come back clean, put the cake back in for another 10-15 minutes. (note: if the top is brown but the center isn't cooked, cover the top with aluminum foil to keep from burning)