Description
RIAM (Rap1-interacting adaptor molecule), also called RARP1 and APBB1-Interacting Protein, is a protein that in humans is encoded by the APBB1IP gene. By genomic sequence analysis, Lafuente et al.(2004) mapped the gene to chromosome 10p12.1. Using promoter-reporter gene assays, Inagaki et al.(2003) found that RIAM suppressed transcription from AP1 and SRE sites, but not CRE sites, in all cell lines examined. The proline-rich regions of RIAM suppressed AP1 transactivation. Lafuente et al.(2004) found that the protein interacted with profilin and VASP, molecules that regulate actin dynamics, as well as with RAP1-GTP