Ready-to-use ELISA kits are available for the detection of CD337, an alias of the protein, natural cytotoxicity triggering receptor 3. The official gene symbol is NCR3. The protein, with a mass of 21.6 kDa and length of 201 residues, is reported to be membrane-associated. It is a member of the Natural cytotoxicity receptor (NCR) family and may be known by other names, including: LY117, CD337, natural killer cell p30-related protein, activating natural killer receptor p30, activating NK-A1 receptor, and NK-p30, and NKp30.