|Application ||WB, IHC, E|
|Calculated MW||68048 Da|
|Description||KARS: lysyl-tRNA synthetase. Aminoacyl-tRNA synthetases are a class of enzymes that charge tRNAs with their cognate amino acids. Lysyl-tRNA synthetase is a homodimer localized to the cytoplasm which belongs to the class II family of tRNA synthetases. It has been shown to be a target of autoantibodies in the human autoimmune diseases, polymyositis or dermatomyositis.|
|Immunogen||Purified recombinant fragment of KARS(aa90-174) expressed in E. Coli. |
|Formulation||Ascitic fluid containing 0.03% sodium azide. |
|Other Names||Lysine--tRNA ligase, 220.127.116.11, Lysyl-tRNA synthetase, LysRS, KARS, KIAA0070|
|Dilution||WB~~1/500 - 1/2000|
IHC~~1/500 - 1/2000
|Storage||Maintain refrigerated at 2-8°C for up to 6 months. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles.|
|Precautions||KARS Antibody is for research use only and not for use in diagnostic or therapeutic procedures.|
|Function||Catalyzes the specific attachment of an amino acid to its cognate tRNA in a 2 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. When secreted, acts as a signaling molecule that induces immune response through the activation of monocyte/macrophages. Catalyzes the synthesis of diadenosine oligophosphate (Ap4A), a signaling molecule involved in the activation of MITF transcriptional activity. Interacts with HIV-1 virus GAG protein, facilitating the selective packaging of tRNA(3)(Lys), the primer for reverse transcription initiation.|
|Cellular Location||Isoform Cytoplasmic: Cytoplasm. Nucleus. Cell membrane; Peripheral membrane protein. Secreted Note=Secretion is induced by TNF-alpha|
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1. J Biol Chem. 2000 Nov 10;275(45):35063-9. 2. J Virol. 2001 Jun;75(11):5043-8. 3. Biochem Biophys Res Commun. 2002 Feb 15;291(1):158-64. 4. Cell. 2004 Oct 15;119(2):195-208.
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