ATP synthase delta/epsilon subunit

{{Infobox protein family

|Name=ATP synthase, F1 complex, delta/epsilon subunit

|InterPro=IPR001469

|Symbol=ATP_synth_F1_dsu/esu

|CDD=cd12152

}}

ATP synthase delta/epsilon subunit is a part of the ATP synthase and the F-ATPase family in general. It is known as the delta subunit in mitochondrial ATP syntheses, and the epsilon subunit in bacterial and chloroplastic ATP syntheses. It is part of the rotor between subunits F₁ and F_O.{{cite journal | vauthors = Ahmad Z, Okafor F, Laughlin TF | title = Role of Charged Residues in the Catalytic Sites of Escherichia coli ATP Synthase | journal = Journal of Amino Acids | volume = 2011 | pages = 1–12 | pmid = 22312470 | doi = 10.4061/2011/785741 | pmc=3268026 | year=2011 | doi-access = free }} Its C terminal domain seems to inhibit ATPase activity of the synthase.{{cite journal |last1=Keis |first1=S |last2=Stocker |first2=A |last3=Dimroth |first3=P |last4=Cook |first4=GM |title=Inhibition of ATP hydrolysis by thermoalkaliphilic F1Fo-ATP synthase is controlled by the C terminus of the epsilon subunit. |journal=Journal of Bacteriology |date=June 2006 |volume=188 |issue=11 |pages=3796–804 |doi=10.1128/JB.00040-06 |pmid=16707672|pmc=1482892 }}