Modulation of Leucine-rich Repeats and Calponin Homology Domain-containing Protein 4 (Lrch4) Activity for Therapeutic Applications
NIH Inventors have recently discovered a novel Leucine-rich repeat and calponin homology domain-containing protein 4 (Lrch4) in a proteomic screen of the plasma membrane of lipopolysaccharide (LPS)-exposed macrophages. Expression data by RT-PCR revealed that all Lrch family members (1-4) are expressed in macrophages, but only Lrch4 was recruited into lipid rafts (signaling microdomains of the plasma membrane) by LPS. Lrch4 is the most highly expressed Lrch family member in mouse tissues. It is a predicted single-spanning transmembrane protein that is encoded by the Lrch4 gene in humans.