Peptide sequence: MAAAASPAFL LCLPLLHLLS GWSRAGWVDT HCLCYDFIIT PKSRPEPQWC Sequence homology: Human: 100%. ULBP1 is the ligand for the NKG2D receptor, together with at least ULBP2 and ULBP3. ULBPs activate multiple signaling pathways in primary NK cells, r