| Now we have identified a novel essential factor for p97 / p47 mediated membrane fusion , named VCIP 135 ( valosin containing protein [ VCP ] [ p 97 ] / p47 complex interacting protein , p 135 ) , and show that it binds to the p97 / p47 / syntaxin5 complex and dissociates it via p 97 catalyzed ATP hydrolysis . ^^^ |