butanoate + ATP + CoA <=> butanoyl-CoA + AMP + diphosphate
butanoate + atp + coa <=> butanoyl-coa + amp + diphosphate
butanoate + ATP + CoA <=> butanoyl-CoA + AMP + diphosphate
butanoate + atp + coa <=> butanoyl-coa + amp + diphosphate