B and Tlymphocyte attenuator (BTLA) is also known as B and Tlymphocyteassociated protein, CD antigen CD272. BTLA contains one Iglike Vtype (immunoglobulinlike) domain. As a lymphocyte inhibitory receptor, BTLA / CD272 inhibits lymphocytes during immune response. BTLA / CD272 can interact with tyrosine phosphatases PTPN6/SHP1 and PTPN11/SHP2, and interact with TNFRSF14/HVEM. - Proteine/Peptide