Jo-1, or histidyl-transfer ribonucleic acid synthetase, is a homodimeric enzyme that catalyzes the coupling of histidine to its specific transfer RNA (tRNA), prior to transport of histidine to the ribosome, and subsequent incorporation of histidine into polypeptide chains. Jo-1 has been associated with various autoimmune disorders, such as polymyositis and dermatomyositis, and T-cell mediated autoimmunity.
Biochem/physiol Actions
The anti-Jo-1 antibody has been associated with an increased frequency of interstitial pulmonary disease in polymyositis/dermatomyositis patients.
Used in the immunoassay for antibodies to Jo-1.
Physical form
Solution in 6 M urea, 500 mM sodium chloride, 10 mM Tris HCl buffer, pH 8.0.
British journal of rheumatology, 37(4), 357-361 (1998-06-10)
We evaluated an enzyme-linked immunosorbent assay (ELISA) for detecting anti-Jo-1 antibodies in patients with polymyositis (PM) or dermatomyositis (DM) by use of the recombinant fusion protein Jo-1. Sera from 64 patients with PM or DM, from 80 patients with other
HIV-1 post-treatment controllers are rare individuals controlling HIV-1 infection for years after antiretroviral therapy interruption. Identification of immune correlates of control in post-treatment controllers could aid in designing effective HIV-1 vaccine and remission strategies. Here, we perform comprehensive immunoprofiling of
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