| Modification Notes |
The LIM domain consists of a cysteine-rich zinc-binding motif that is present in a variety of transcription factors, including the LIM homeobox (LHX) proteins of the central nervous system that contribute to cell differentiation. LIMCH1 (LIM and calponin homology domains 1), also known as LMO7B and LIMCH1A, is a 1,083 amino acid protein that belongs to the LIMCH1 family. Containing one CH (calponin-homology) domain and one LIM zinc-binding domain, LIMCH1 exists as nine alternatively spliced isoforms. LIMCH1 is encoded by a gene located on human chromosome 4p13. Chromosome 4 represents approximately 6% of the human genome and contains nearly 900 genes. Notably, the Huntingtin gene, which is found to encode an expanded glutamine tract in cases of Huntington's disease, is on chromosome 4. FGFR-3 is also encoded on chromosome 4 and has been associated with thanatophoric dwarfism, achondroplasia, Muenke syndrome and bladder cancer. Chromosome 4 is also tied to Ellis-van Creveld syndrome, methylmalonic acidemia and polycystic kidney disease. |