The LIM domain of LIM and transglutaminase domains protein (Ltd-1)
The LIM domain of LIM and transglutaminase domains protein (Ltd-1): This family includes mouse Ky protein and Caenorhabditis elegans Ltd-1 protein. The members of this family consists a N-terminal Lim domain and a C-terminal transglutaminase domain. The mouse Ky protein has putative function in muscle development. The mouse with ky mutant exhibits combined posterior and lateral curvature of the spine. The Ltd-1 gene in C. elegans is expressed in developing hypodermal cells from the twofold stage embryo through adulthood. These data define the ltd-1 gene as a novel marker for C. elegans epithelial cell development. As in other LIM domains, this domain family is 50-60 amino acids in size and shares 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.
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.",