Reversibly transfers an adenylyl group from ATP to 4'- phosphopantetheine, yielding dephospho-CoA (dPCoA) and pyrophosphate (By similarity). MTIAVCPGSYDPVTAGHLDVIERSARFFDEVHVVVAVNAAKTPMFSEATRVDVIRRALDKAGCKNVTVSSTDGLITDYCKKVGATVIIKGLRQNGDYEAELGMALVNRKLAGIETLFLPADPILEHISSSIVKDVARHGGDVTGMVPDCVVPMLADALAEERQRKD Phosphopantetheine adenylyltransferase 166 Dephospho-CoA pyrophosphorylase COAD_BIFLD BLD_1037 coaD Pantetheine-phosphate adenylyltransferase