Does active transport involve phosphoralization

Yes primary active transport machinery (protein pumps) relies on phosphorylation of the carrier protein. ATP hydrolysis yields the phosphate molecule to interact with the protein pump. This cause the conformational change in the ion channel protein to carry out exchange of ions. For example: sodium-potassium pump: binding of phosphate release sodium from cell, whereas dephosphorylation allows the entry of potassium ions inside the cell.