Granulocyte macrophage-colony stimulating factor reduces the affinity of SHP-2 for the ITIM of CLECSF6 in neutrophils: a new mechanism of action for SHP-2.

Proteins that bear immunoreceptor tyrosine based inhibitory motifs (ITIM) are believed to participate in the repression of cell activation via phosphatases such as SHP-1, SHP-2 and/or SHIP-1. CLECSF6, also called DCIR, is a transmembrane protein expressed on leukocytes and predominantly on neutrophils that bears one ITIM pattern. This feature confers to CLECSF6 a role in the repression of cell activation.