LIM domain only protein 2 (LMO2)

LIM domain only protein 2 (LMO2) is a small, cysteine-rich protein made up of two LIM domains, each featuring double zinc finger motifs that enable protein-protein interactions but do not bind DNA directly[2][3][5]. It functions as a scaffold, assembling multiprotein transcriptional complexes with partners such as SCL/TAL1, E47, LDB1, and GATA1, playing a central role in hematopoietic stem cell regulation and erythropoiesis[2][6]. Aberrant overexpression or activation of LMO2, often due to chromosomal translocation or regulatory mutations, is a defining feature of certain T-cell acute lymphoblastic leukemias and is implicated in other blood cancers[3][6]. Due to its critical role in both normal blood cell development and leukemia pathogenesis, LMO2 is considered a therapeutic target, though direct targeting remains investigational and poses challenges related to specificity and preservation of normal hematopoiesis[1][3][4][5][6].

Other names

Rhombotin-2RBTN2RBTNL1RHOM2TTG2LIM domain only protein 2LMO-2T-cell translocation protein 2T-cell translocation gene 2cysteine-rich protein TTG-2rhombotin-like 1

Experimental drugs: Inhibit protein-protein interaction by sequestration of LMO2, disrupting transcriptional complex assembly