May function as a scaffold on which the coordinated assembly of proteins can occur. May play a role as an adapter that, via its PDZ domain, localizes LIM-binding proteins to actin filaments of both skeletal muscle and nonmuscle tissues. May be involved in bone formation (By similarity). Interacts with various PKC isoforms through the LIM zinc-binding domains. Interacts with TPM2 (By similarity). Interacts with TBX4 and TBX5. Colocalizes with TPM2 near the Z line in muscle (By similarity). Colocalizes with TBX4 and TBX5 to actin filaments. Expressed in the presumptive fore- and hindlimb. Continues to be expressed in the limb mesenchyme throughout forelimb and hindlimb bud outgrowth. Expressed in the developing heart and eye. The LIM zinc-binding 2 (LIM 2) interacts with TBX4. The LIM zinc-binding 3 (LIM 3) domain provides the structural basis for recognition of tyrosine-containing tight turn structures (By similarity). This domain is necessary and sufficient for interaction with TBX5. Anchored to cell periphery via its N-terminal PDZ domain.