Table I. SLP76 interactome in resting BMMC. Proteins were identified in four affinity purifications of SLP76^OST complexes in resting cells. Listed molecules were enriched at least fourfold in nonactivated Slp^OST/OST compared to Slp^+/+ BMMC (OST− vs WT−). The significance (p < 10⁻³) of enrichment (OST−/WT− ratio) was determined using student's t-test. UniProt Accession numbers, protein symbols and molecular function are also shown.

Protein symbol	Protein name	UniProt Acc	Function	Ratio
				OST−/WT−
Resting BMMC
GRAP2	GRB2-related adaptor protein 2	O89100	Adapter Protein	513
RABE1	Rab GTPase-binding effector protein 1	O35551	GTPase activation	192
RHG27	Rho GTPase-activating protein 27	A2AB59	GTPase activation	72