4-hydroxybutanoate + ATP + CoA = 4-hydroxybutanoyl-CoA + ADP + phosphate
4-hydroxybutanoate + atp + coa = 4-hydroxybutanoyl-coa + adp + phosphate
4-hydroxybutanoate + ATP + CoA = 4-hydroxybutanoyl-CoA + ADP + phosphate
4-hydroxybutanoate + atp + coa = 4-hydroxybutanoyl-coa + adp + phosphate