The first LIM domain of LMO2 (LIM domain only protein 2)
The first LIM domain of LMO2 (LIM domain only protein 2): LMO2 is a nuclear protein that plays important roles in transcriptional regulation and development. The two tandem LIM domains of LMO2 support the assembly of a crucial cell-regulatory complex by interacting with both the TAL1-E47 and GATA1 transcription factors to form a DNA-binding complex that is capable of transcriptional activation. LMOs have also been shown to be involved in oncogenesis. LMO1 and LMO2 are activated in T-cell acute lymphoblastic leukemia by distinct chromosomal translocations. LMO2 was also shown to be involved in erythropoiesis and is required for the hematopoiesis in the adult animals. All LIM domains are 50-60 amino acids in size and share two characteristic zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein complexes.
Comment:The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. The Zn binding residues of LIM domain are highly conserved.
Jiyao W et al.(2023). "The conserved domain database in 2023.",