Anti-Lipocalin-1 LCN1 Antibody Picoband®

Lipocalin-1 (LCN1), also known as PREALBUMIN, TEAR or VEGP, is a protein that in humans is encoded by the LCN1 gene. Lipocalin-1 is a member of the lipocalin family of small secretory proteins, which is mapped on 9q34.3. Lipocalin-1 is the primary lipid binding protein in tears and is overproduced in response to multiple stimuli including infection and stress. It may be a marker for chromosome aneuploidy as well as an autoantigen in Sjogren's syndrome. LCN1 inhibits the cysteine-protease papain in vitro, similar to cystatins. And LCN1 plays a role in the nonimmunologic defense and in the control of inflammatory processes in oral and ocular tissues. The investigations presented the first clear evidence that LCN1 is induced in infection or inflammation and supported the idea that this lipocalin functions as a physiologic protection factor of epithelia in vivo.

Could play a role in taste reception. Could be necessary for the concentration and delivery of sapid molecules in the gustatory system. Can bind various ligands, with chemical structures ranging from lipids and retinoids to the macrocyclic antibiotic rifampicin and even to microbial siderophores. Exhibits an extremely wide ligand pocket.

1. Baumgartner, M., Holzfeind, P., Redl, B. Assignment of the gene for human tear prealbumin (LCN1), a member of the lipocalin superfamily, to chromosome 8q24. Cytogenet. Cell Genet. 65: 101-103, 1994. 2. Blaker, M., Kock, K., Ahlers, C., Buck, F., Schmale, H. Molecular cloning of human von Ebner's gland protein, a member of the lipocalin superfamily highly expressed in lingual salivary glands. Biochim. Biophys. Acta 1172: 131-137, 1993. 3. Glasgow BJ, Abduragimov AR, Gasymov OK, Yusifov TN (2003) . Tear lipocalin: structure, function and molecular mechanisms of action. Adv. Exp. Med. Biol. 506 (Pt A) : 555–65.

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.