Term Name:	proton-transporting two-sector ATPase complex, catalytic domain
Synonyms:
Definition:	A protein complex that forms part of a proton-transporting two-sector ATPase complex and catalyzes ATP hydrolysis or synthesis. The catalytic domain (F1, V1, or A1) comprises a hexameric catalytic core and a central stalk, and is peripherally associated with the membrane when the two-sector ATPase is assembled.
Ontology:	GO: Cellular Component [GO:0033178]    QuickGO    AmiGO