Residues within a lipid-associated segment of the PECAM-1 cytoplasmic domain are susceptible to inducible, sequential phosphorylation.
Paddock, C., Lytle, B.L., Peterson, F.C., Holyst, T., Newman, P.J., Volkman, B.F., Newman, D.K.(2011) Blood 117: 6012-6023
- PubMed: 21464369 
- DOI: 10.1182/blood-2010-11-317867
- Primary Citation of Related Structures:  
2KY5 - PubMed Abstract: 
Immunoreceptor tyrosine-based inhibitory motif (ITIM)-containing receptors inhibit cellular responsiveness to immunoreceptor tyrosine-based activation motif (ITAM)-linked receptors. Although tyrosine phosphorylation is central to the initiation of both inhibitory ITIM and stimulatory ITAM signaling, the events that regulate receptor phosphorylation are incompletely understood ...