Structural Analyses of Slm1-Ph Domain Demonstrate Ligand Binding in the Non-Canonical SiteAnand, K., Maeda, K., Gavin, A.C.
(2012) PLoS One 7: 36526
- PubMed: 22574179
- DOI: https://doi.org/10.1371/journal.pone.0036526
- Primary Citation of Related Structures:
4A5K, 4A6F, 4A6H, 4A6K
- PubMed Abstract:
Pleckstrin homology (PH) domains are common membrane-targeting modules and their best characterized ligands are a set of important signaling lipids that include phosphatidylinositol phosphates (PtdInsPs). PH domains recognize PtdInsPs through two distinct mechanisms that use different binding pockets on opposite sides of the β-strands 1 and 2: i) a canonical binding site delimited by the β1-β2 and β3-β4loops and ii) a non-canonical binding site bordered by the β1-β2 and β5-β6loops. The PH domain-containing protein Slm1 from budding yeast Saccharomyces cerevisiae is required for actin cytoskeleton polarization and cell growth. We recently reported that this PH domain binds PtdInsPs and phosphorylated sphingolipids in a cooperative manner.
European Molecular Biology Laboratory Heidelberg, Structural and Computational Biology Unit, Heidelberg, Germany. firstname.lastname@example.org