Catalyzes the phosphorylation of the 3'-hydroxyl group of dephosphocoenzyme A to form coenzyme A. 3'-dephospho-CoA + ATP = ADP + CoA + H(+) Cofactor biosynthesis; coenzyme A biosynthesis; CoA from (R)-pantothenate: step 5/5. The C-terminal UPF0157 domain is involved in the proper folding of the full length enzyme. In the N-terminal section; belongs to the CoaE family. In the C-terminal section; belongs to the UPF0157 (GrpB) family.