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J4144

Sigma-Aldrich

Jo-1 human

recombinant, expressed in E. coli, solution

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About This Item

MDL number:
UNSPSC Code:
12352204
NACRES:
NA.83

recombinant

expressed in E. coli

Quality Level

form

solution

mol wt

55 kDa by SDS-PAGE

UniProt accession no.

shipped in

dry ice

storage temp.

−70°C

Gene Information

human ... HARS(3035)

General description

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.

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


Certificates of Analysis (COA)

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M Nishikai et al.
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

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