NCIt definition : The approximately 70 amino acid SAM (Sterile Alpha Motif) domain has been identified
in over 400 different proteins with diverse cellular function, from yeast to man.
SAM domains have been implicated in mediating protein-protein interaction via the
formation of homo and hetero-typic oligomers. The residues at the interface of the
EphA4 and EphB2 SAM domain homodimers have been mapped, but the factors that determine
specificity remain to be determined. (Pawson Lab, SLRI, Mount Sinai Hospital, 2003);