Scientific background: |
APBB1IP (APBB1-Interacting Protein), also called RIAM or RARP1, is a protein that in humans is encoded by the APBB1IP gene. By genomic sequence analysis, Lafuente et al. (2004) mapped the RIAM gene to chromosome 10p12.1. Using promoter-reporter gene assays, Inagaki et al. (2003) found that RARP1 suppressed transcription from AP1 and SRE sites, but not CRE sites, in all cell lines examined. The proline-rich regions of RARP1 suppressed AP1 transactivation. Lafuente et al. (2004) found that RIAM interacted with profilin and VASP, molecules that regulate actin dynamics, as well as with RAP1-GTP. |
References: |
1. Inagaki, T., Suzuki, S., Miyamoto, T., Takeda, T., Yamashita, K., Komatsu, A., Yamauchi, K., Hashizume, K. The retinoic acid-responsive proline-rich protein is identified in promyeloleukemic HL-60 cells. J. Biol. Chem. 278: 51685-51692, 2003.
2. Lafuente, E. M., van Puijenbroek, A. A. F. L., Krause, M., Carman, C. V., Freeman, G. J., Berezovskaya, A., Constantine, E., Springer, T. A., Gertler, F. B., Boussiotis, V. A. RIAM, an Ena/VASP and Profilin ligand, interacts with Rap1-GTP and mediates Rap1-induced adhesion. Dev. Cell 7: 585-595, 2004.
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