Anti-Leucyl tRNA synthetase /LARS Antibody Picoband®

Leucyl-tRNA synthetase, cytoplasmic is an enzyme that in humans is encoded by the LARS gene. This gene is mapped to 5q32. It encodes a cytosolic leucine-tRNA synthetase, a member of the class I aminoacyl-tRNA synthetase family. The encoded enzyme catalyzes the ATP-dependent ligation of L-leucine to tRNA (Leu) . It is found in the cytoplasm as part of a multisynthetase complex and interacts with the arginine tRNA synthetase through its C-terminal domain. A mutation in this gene was found in affected individuals with infantile liver failure syndrome 1. Alternatively spliced transcript variants of this gene have been observed.

Within the immune system initially reported to be selectively expressed in granulocytes (polymorphonuclear leukocytes [PMNs]) . Also detected in macrophages mycobacterial granulomas. Expressed in group2 innate lymphoid cells (ILC2s) during lung disease.

Catalyzes the specific attachment of an amino acid to its cognate tRNA in a two step reaction: the amino acid (AA) is first activated by ATP to form AA-AMP and then transferred to the acceptor end of the tRNA. Exhibits a post-transfer editing activity to hydrolyze mischarged tRNAs.

1. Casey, J. P., McGettigan, P., Lynam-Lennon, N., McDermott, M., Regan, R., Conroy, J., Bourke, B., O'Sullivan, J., Crushell, E., Lynch, S., Ennis, S. Identification of a mutation in LARS as a novel cause of infantile hepatopathy. Molec. Genet. Metab. 106: 351-358, 2012. 2. Dana, S., Wasmuth, J. J. Selective linkage disruption in human-Chinese hamster cell hybrids: deletion mapping of the leuS, hexB, emtB, and chr genes on human chromosome 5. Molec. Cell. Biol. 2: 1220-1228, 1982. 3. Gerken, S. C., Wasmuth, J. J., Arfin, S. M. Threonyl-rRNA synthetase gene maps close to leucyl-tRNA synthetase gene on human chromosome 5. Somat. Cell Molec. Genet. 12: 519-522, 1986.

Store at -20°C for one year from date of receipt. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for six months. Avoid repeated freeze-thaw cycles.