Anti-ornithine aminotransferase/OAT Antibody Picoband®

Ornithine aminotransferase (OAT) is an enzyme which is encoded in human by the OAT gene located on chromosome 10. This gene encodes the mitochondrial enzyme ornithine aminotransferase, which is a key enzyme in the pathway that converts arginine and ornithine into the major excitatory and inhibitory neurotransmitters glutamate and GABA. Mutations that result in a deficiency of this enzyme cause the autosomal recessive eye disease Gyrate Atrophy. Alternatively spliced transcript variants encoding different isoforms have been described. Related pseudogenes have been defined on the X chromosome.

Podoplanin; Aggrus; Glycoprotein 36; Gp36; PA2.26 antigen; T1-alpha; T1A; 29kDa cytosolic podoplanin intracellular domain; PICD; PDPN; GP36; PSEC0003, PSEC0025

Highly expressed in placenta, lung, skeletal muscle and brain. Weakly expressed in brain, kidney and liver. In placenta, expressed on the apical plasma membrane of endothelium. In lung, expressed in alveolar epithelium. Up-regulated in colorectal tumors and expressed in 25% of early oral squamous cell carcinomas.

Cancer, Co-Activators/Co-Repressors, Energy Metabolism, Energy Transfer Pathways, Epigenetics and Nuclear Signaling, Metabolic Signaling Pathways, Metabolism, Neurology Process, Neuroscience, Nuclear Hormone Receptors, Nuclear Receptors, Nuclear Signaling, Nuclear Signaling Pathways, Pathways and Processes, Signal Transduction, Signaling Pathway

Mediates effects on cell migration and adhesion through its different partners. During development plays a role in blood and lymphatic vessels separation by binding CLEC1B, triggering CLEC1B activation in platelets and leading to platelet activation and/or aggregation (PubMed:14522983, PubMed:15231832, PubMed:17616532, PubMed:18215137, PubMed:17222411) . Interaction with CD9, on the contrary, attenuates platelet aggregation induced by PDPN (PubMed:18541721) . Through MSN or EZR interaction promotes epithelial-mesenchymal transition (EMT) leading to ERZ phosphorylation and triggering RHOA activation leading to cell migration increase and invasiveness (PubMed:17046996, PubMed:21376833) . Interaction with CD44 promotes ional cell migration in epithelial and tumor cells (PubMed:20962267) . In lymph nodes (LNs), controls fibroblastic reticular cells (FRCs) adhesion to the extracellular matrix (ECM) and contraction of the actomyosin by maintaining ERM proteins (EZR; MSN and RDX) and MYL9 activation through association with unknown transmembrane proteins. Engagement of CLEC1B by PDPN promotes FRCs relaxation by blocking lateral membrane interactions leading to reduction of ERM proteins (EZR; MSN and RDX) and MYL9 activation (By similarity) . Through binding with LGALS8 may participate to connection of the lymphatic endothelium to the surrounding extracellular matrix (PubMed:19268462) . In keratinocytes, induces changes in cell morphology showing an elongated shape, numerous membrane protrusions, major reorganization of the actin cytoskeleton, increased motility and decreased cell adhesion (PubMed:15515019) . Controls invadopodia stability and maturation leading to efficient degradation of the extracellular matrix (ECM) in tumor cells through modulation of RHOC activity in order to activate ROCK1/ROCK2 and LIMK1/LIMK2 and inactivation of CFL1 (PubMed:25486435) . Required for normal lung cell proliferation and alveolus formation at birth (By similarity) . Does not function as a water channel or as a regulator of aquaporin-type water channels (PubMed:9651190) . Does not have any effect on folic acid or amino acid transport (By similarity) .

1. Akaki, Y., Hotta, Y., Mashima, Y., Murakami, A., Kennaway, N. G., Weleber, R. G., Inana, G. A deletion in the ornithine aminotransferase gene in gyrate atrophy. J. Biol. Chem. 267: 12950-12954, 1992. 2. Barrett, D. J., Bateman, J. B., Sparkes, R. S., Mohandas, T., Klisak, I., Inana, G. Chromosomal localization of human ornithine aminotransferase gene sequences to 10q26 and Xp11.2. Invest. Ophthal. Vis. Sci. 28: 1037-1042, 1987. 3. Bisaillon, J. J., Radden, L. A., II, Szabo, E. T., Hughes, S. R., Feliciano, A. M., Nesta, A. V., Petrovic, B., Palanza, K. M., Lancinskas, D., Szmurlo, T. A., Artus, D. C., Kapper, M. A., Mulrooney, J. P., King, T. R. The retarded hair growth (rhg) mutation in mice is an allele of ornithine aminotransferase (Oat) . Molec. Genet. Metab. Rep. 1: 378-390, 2014.

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.