Anti-Lactate Dehydrogenase B/LDHB Antibody Picoband®

The LDHB gene encodes the B subunit of lactate dehydrogenase enzyme, which catalyzes the interconversion of pyruvate and lactate with concomitant interconversion of NADH and NAD+ in a post-glycolysis process. Alternatively spliced transcript variants have been found for this gene. Recent studies have shown that a C-terminally extended isoform is produced by use of an alternative in-frame translation termination codon via a stop codon readthrough mechanism, and that this isoform is localized in the peroxisomes. Mutations in this gene are associated with lactate dehydrogenase B deficiency. Pseudogenes have been identified on chromosomes X, 5 and 13.

E. coli-derived human LDHB recombinant protein (Position: E237-L334) . Human LDHB shares 98% amino acid (aa) sequence identity with both mouse and rat LDHB.

Cancer, Cancer Metabolism, Carbohydrate Metabolism, Cell Biology, Energy Metabolism, Energy Transfer Pathways, Metabolic Signaling Pathway, Metabolic Signaling Pathways, Metabolism, Metabolism Of Carbohydrates, Oxidative Stress, Pathways and Processes, Signal Transduction

Component of the CCM signaling pathway which is a crucial regulator of heart and vessel formation and integrity (By similarity) . Negative regulator of angiogenesis. Inhibits endothelial proliferation, apoptosis, migration, lumen formation and sprouting angiogenesis in primary endothelial cells. Promotes AKT phosphorylation in a NOTCH-dependent and independent manner, and inhibits ERK1/2 phosphorylation inly through activation of the DELTA-NOTCH cascade. Acts in concert with CDH5 to establish and maintain correct endothelial cell polarity and vascular lumen and these effects are mediated by recruitment and activation of the Par polarity complex and RAP1B. Required for the localization of phosphorylated PRKCZ, PARD3, TIAM1 and RAP1B to the cell junction, and cell junction stabilization. Plays a role in integrin signaling via its interaction with ITGB1BP1; this prevents the interaction between ITGB1 and ITGB1BP1. Microtubule- associated protein that binds to phosphatidylinositol 4,5- bisphosphate (PIP2) -containing membranes in a GTP-bound RAP1- dependent manner. Plays an important role in the maintenance of the intracellular reactive oxygen species (ROS) homeostasis to prevent oxidative cellular damage. Regulates the homeostasis of intracellular ROS through an antioxidant pathway involving FOXO1 and SOD2. Facilitates the down-regulation of cyclin-D1 (CCND1) levels required for cell transition from proliferative growth to quiescence by preventing the accumulation of intracellular ROS through the modulation of FOXO1 and SOD2 levels. .

1. Markert, C. L. Lactate dehydrogenase: biochemistry and function of lactate dehydrogenase. Cell Biochem. Func. 2: 131-134, 1984. 2. Okumura, N., Terasawa, F., Ueno, I., Oki, K., Yamauchi, K., Hidaka, H., Tozuka, M., Okura, M., Katsuyama, T. Genetic analyses in homozygous and heterozygous variants of lactate dehydrogenase-B (H) subunit: LD-B Matsumoto I and II (LD-B W323R) . Clin. Chim. Acta 287: 163-171, 1999.

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.