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Recombinant Human LA / SS-B
Recombinant Human LA / SS-B
- 中文名称：
- Recombinant Human LA / SS-B
- 英文名称：
- Recombinant Human LA / SS-B
- 品牌：
- AAA Biotech
- 品牌介绍：
- AAA Biotech专注于为全球生命科学研究提供高品质的蛋白质研究工具，核心产品包括经严格验证的抗体、重组蛋白及ELISA试剂盒。
- 货号：
- AAA38431
- 规格：
- 1 mg|2x1 mg|3x1 mg|4x1 mg|5x1 mg
- 保存建议：
- Store at 4 degree C if entire vial will be used within 2-4 weeks. Store, frozen at -20 degree C for longer periods of time. Avoid multiple freeze-thaw cycles.
- 货期：
- 6-8周
- 纯度：
- Greater than 95.0% as determined by SDS-PAGE.
- 产品形式：
- The protein solution (0.94mg/ml) contains 20mM HEPES, pH 7.5, 400mM NaCl, 20% Glycerol
- 免责声明：
- *本产品仅供科研实验使用，不得用于临床诊断。*
- 说明书：
Description: LA/SS-B Human Recombinant produced in SF9 is a single, glycosylated, polypeptide chain having a calculated molecular mass of 52 kDa, is fused to a hexahistidine purification tag.The LA/SS-B is purified by proprietary chromatographic techniques.
Introduction: The La protein is a 47 kDa polypeptide that frequently acts as an autoantigen in systemic lupus erythematosus and Sjogren's syndrome patients. La is involved in various aspects of RNA metabolism, including binding and protecting 3-prime UUU(OH) elements of newly RNA polymerase III - transcribed RNA, processing 5-prime and 3-prime ends of pre-tRNA precursors, acting as an RNA chaperone, and binding viral RNAs linked to hepatitis C virus. It occurs in both the nucleus and the cytoplasm, where it assumes different roles. In the nucleus, La protein facilitates the production of tRNAs, acting as an RNA polymerase III (RNAP III) transcription factor by attaching to the U-rich 3'UTR of nascent transcripts, aiding in their folding and maturation. In the cytoplasm, La protein facilitates the translation of specific mRNAs, acting as a translation factor. As an RNA binding protein (RBP), La protein associates with subsets of mRNAs which contain a 5'-terminal oligopyrimidine (5'TOP) motif known to direct protein synthesis. The binding of La protein to particular classes of RNA molecules regulates their downstream processing, guards them from endonuclease digestion, and organizes their export from the nucleus. La/SS-B appears to be readily disposed to proteolysis, which results in many smaller (42kD, 320, and 270) nevertheless still immunoreactive polypeptides. La/SS-B antigen is strongly conserved across species. Anti-La/SS-B autoantibodies were originally found as precipitating autoantibodies in sera of Sjogren's Syndrome patients and referred to as SjT. Anti-La/SS-B precipitins are most frequently found in Sjogren's Syndrome, Systemic Lupus Erythematosus (SLE) and Subacute Cutaneous Lupus. Also, there seems to be a correlation between anti-La/SS-B and the absence of nephritis in SLE patients.
