Structural Characterization of S100A15 Reveals a Novel Zinc Coordination Site Among S100 Proteins and Altered Surface Chemistry with Functional Implications for Receptor Binding.
Primary Citation of Related Structures: 4AQI, 4AQJ
PubMed Abstract:
S100 proteins are a family of small, EF-hand containing calcium-binding signaling proteins that are implicated in many cancers. While the majority of human S100 proteins share 25-65% sequence similarity, S100A7 and its recently identified paralog, S100A15, display 93% sequence identity ...
S100 proteins are a family of small, EF-hand containing calcium-binding signaling proteins that are implicated in many cancers. While the majority of human S100 proteins share 25-65% sequence similarity, S100A7 and its recently identified paralog, S100A15, display 93% sequence identity. Intriguingly, however, S100A7 and S100A15 serve distinct roles in inflammatory skin disease; S100A7 signals through the receptor for advanced glycation products (RAGE) in a zinc-dependent manner, while S100A15 signals through a yet unidentified G-protein coupled receptor in a zinc-independent manner. Of the seven divergent residues that differentiate S100A7 and S100A15, four cluster in a zinc-binding region and the remaining three localize to a predicted receptor-binding surface.
Organizational Affiliation:
Department of Chemistry, University of Victoria, PO Box 3065STN CSC, Victoria, BC V8W 3P6, Canada.
Download Mendeley
