Anti-12 Lipoxygenase/ALOX12 UBB Antibody Picoband® Fluoro647 Conjugated

ALOX12, Arachidonate 12-lipoxygenase, is an enzyme that in humans is encoded by the ALOX12 gene. By fluorescence in situ hybridization, the ALOX12 gene is located in band 17p13.1. The gene consists of 14 exons with 13 introns and spans approximately 15 kb of DNAArachidonate 12-lipoxygenase introduces a molecular oxygen into the C-12 position of arachidonic acid to produce 12 (S) -hydroperoxy-5,8,10,14-eicosatetraenoic acid. The major pathway of arachidonic acid metabolism in human platelets proceeds via a 12-lipoxygenase enzyme. Expression of the LOG12 gene was detected in human erythroleukemia cells, platelets, and human umbilical vein endothelial cells by reverse transcription-PCR analysis.

A synthetic peptide corresponding to a sequence at the C-terminus of human ALOX12, different from the related rat sequence by four amino acids, and from the related mouse sequence by five amino acids.

Alzheimer's Disease, Cell Biology, Chromatin Modifying Enzymes, Epigenetics and Nuclear Signaling, Neurodegenerative Disease, Neurology Process, Neuroscience, Proteasome / Ubiquitin, Proteolysis/Ubiquitin

Ubiquitin: Exists either covalently attached to another protein, or free (unanchored) . When covalently bound, it is conjugated to target proteins via an isopeptide bond either as a monomer (monoubiquitin), a polymer linked via different Lys residues of the ubiquitin (polyubiquitin chains) or a linear polymer linked via the initiator Met of the ubiquitin (linear polyubiquitin chains) . Polyubiquitin chains, when attached to a target protein, have different functions depending on the Lys residue of the ubiquitin that is linked: Lys-6-linked may be involved in DNA repair; Lys-11-linked is involved in ERAD (endoplasmic reticulum-associated degradation) and in cell-cycle regulation; Lys-29-linked is involved in lysosomal degradation; Lys-33-linked is involved in kinase modification; Lys-48-linked is involved in protein degradation via the proteasome; Lys-63-linked is involved in endocytosis, DNA-damage responses as well as in signaling processes leading to activation of the transcription factor NF-kappa-B. Linear polymer chains formed via attachment by the initiator Met lead to cell signaling. Ubiquitin is usually conjugated to Lys residues of target proteins, however, in rare cases, conjugation to Cys or Ser residues has been observed. When polyubiquitin is free (unanchored-polyubiquitin), it also has distinct roles, such as in activation of protein kinases, and in signaling. .

1. Funk, C. D., Furci, L., FitzGerald, G. A.Molecular cloning, primary structure, and expression of the human platelet/erythroleukemia cell 12-lipoxygenase.Proc. Nat. Acad. Sci. 87: 5638-5642, 1990. 2. Natarajan, R., Esworthy, R., Bai, W., Gu, J.-L., Wilczynski, S., Nadler, J.Increased 12-lipoxygenase expression in breast cancer tissues and cells. Regulation by epidermal growth factor.J. Clin. Endocr. Metab. 82: 1790-1798, 1997. 3. Yoshimoto, T., Arakawa, T., Hada, T., Yamamoto, S., Takahashi, E.Structure and chromosomal localization of human arachidonate 12-lipoxygenase gene.J. Biol. Chem. 267: 24805-24809, 1992.