| First Author | van Ham M | Year | 2003 |
| Journal | Genes Cells | Volume | 8 |
| Issue | 7 | Pages | 631-44 |
| PubMed ID | 12839623 | Mgi Jnum | J:89941 |
| Mgi Id | MGI:3042027 | Doi | 10.1046/j.1365-2443.2003.00660.x |
| Citation | van Ham M, et al. (2003) Cloning and characterization of mCRIP2, a mouse LIM-only protein that interacts with PDZ domain IV of PTP-BL. Genes Cells 8(7):631-44 |
| abstractText | BACKGROUND: In the mouse submembranous protein tyrosine phosphatase PTP-BL five PDZ domains are present in between the N-terminal FERM domain, which directs the protein to the cell cortex, and the C-terminal catalytic phosphatase domain. To understand more on the physical role of PTP-BL in this microenvironment, we started to search for PTP-BL PDZ domain-interacting proteins. RESULTS: Yeast two-hybrid screening for PTP-BL targets resulted in the identification of a novel mouse LIM-only protein termed CRIP2 that is highly homologous to rat ESP1 and human CRP2 sequences. Mouse CRIP2 has a predicted molecular weight of 23 kD and consists of two LIM domains spaced by 68 amino acids. The fourth PDZ domain of PTP-BL is responsible for the binding of CRIP2 protein. Both PTP-BL and CRIP2 mRNAs display a wide, overlapping tissue distribution. Western blot analysis revealed a more restricted expression pattern for CRIP2 with high expression in lung, heart and brain. CRIP2 protein is localized at cell cortical, actin-rich structures, which is concurrent with the subcellular localization of PTP-BL. CONCLUSIONS: The observed characteristics of the LIM domain-containing adaptor protein CRIP2 are consistent with a potential role of PTP-BL in the dynamics of the cortical actin cytoskeleton. |
