The present invention relates to a novel protein, TR10, which is a member of the tumor necrosis factor (TNF) receptor superfamily and the TRAIL receptor subfamily. In particular, isolated nucleic acid molecules are provided encoding the human TR10 protein. TR10 polypeptides and anti-TR10 antibodies are also provided as are vectors, host cells and recombinant methods for producing the same. The invention further relates to screening methods for identifying agonists and antagonists of TR10 activity.