Leukocyte immunoglobulin-like receptor subfamily A member 3 (LILRA3)

Acts as soluble receptor for class I MHC antigens. Binds both classical and non-classical HLA class I molecules but with reduced affinities compared to LILRB1 or LILRB2.

Binds with high affinity to the surface of monocytes, leading to abolish LPS- induced TNF-alpha production by monocytes. .