Binds to the LIM domain of a wide variety of LIM domain-containing transcription factors. Interacts with LHX9 (PubMed:10330499). Interacts with SLK; leading to negatively regulate SLK kinase activity (PubMed:19675209). Colocalizes with SLK at leading edges (PubMed:19675209). Ubiquitinated by RLIM/RNF12, leading to its degradation by the proteasome. Lacks LIM-binding domain. Belongs to the LDB family.