Combining with a virus component to initiate a change in cell activity [goid 1618] [evidence ISS]; Interacting selectively with a CD27, a receptor found on the surface of T cells and some B cells and NK cells [goid 5175] [pmid 16683188] [evidence IPI]; Interacting selectively with a CD27, a receptor found on the surface of T cells and some B cells and NK cells [goid 5175] [pmid 9177220] [evidence IPI]; Interacting selectively with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules) [goid 5515] [pmid 14739602] [evidence IPI]; Interacting selectively with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules) [goid 5515] [pmid 12011449] [evidence IPI]; Interacting selectively with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules) [goid 5515] [pmid 14739602] [evidence IPI]; Interacting selectively with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules) [goid 5515] [pmid 9177220] [evidence IPI]; Interacting selectively with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules) [goid 5515] [pmid 16683188] [evidence IPI]; Interacting selectively with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules) [goid 5515] [pmid 14739602] [evidence IPI]; Interacting selectively with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules) [goid 5515] [pmid 12011449] [evidence IPI]; Interacting selectively with zinc (Zn) ions [goid 8270] [pmid 16683188] [evidence IDA]; Interacting selectively with zinc (Zn) ions [goid 8270] [evidence IEA]; Increases the rate of proteolysis catalyzed by a caspase [goid 8656] [pmid 15034012] [evidence IDA]; Interacting selectively with any metal ion [goid 46872] [evidence IEA]