| http://purl.uniprot.org/keywords/655 | http://www.w3.org/2000/01/rdf-schema#comment | "Protein which activates prothrombin, the inactive precursor of thrombin. For example, staphylocoagulase, an extracellular protein produced by Staphylococcus aureus, forms a complex with prothrombin which can clot fibrinogen without any proteolytic cleavage of prothrombin."xsd:string |