Can i substitute sour cream for buttermilk in a cupcake recipe?

when baking cupcakes, for example red velvet, can one substitute the buttermilk for sour cream? if so, does this alter the use of vinegar in the recipe? i've noticed sour cream makes cake recipes really moist and delicious so i'd like to know how to add it to my existing recipes.Can i substitute sour cream for buttermilk in a cupcake recipe?
only if it is liquidCan i substitute sour cream for buttermilk in a cupcake recipe?
Yes:


For recipes, a substitute for buttermilk can be made by adding 1 tablespoon of lemon juice or vinegar or 1 3/4 teaspoons cream of tartar to each cup of regular milk. The soured milk should be allowed to sit for ten minutes before being used.[4]





A low-fat substitute can be made by mixing equal parts of skim milk and low-fat yogurt or sour cream.[5]











also from cdkitchen


Buttermilk Substitute





For each 1 cup buttermilk called for in a recipe, use 1 cup plain yogurt or sour cream;


OR


1 tablespoon lemon juice or vinegar plus enough milk to make 1 cup;


OR


1 cup milk plus 1 3/4 tablespoons cream of tartar;


OR


1/4 cup buttermilk powder and 1 cup water.
Sour cream doesn't have enough acid to get the lift you want. But you can mix a half cup of yogurt with a half cup of milk.
you can make buttermilk or I should say make milk sour by adding vinager to it. I have done it for cornbread.