PL 7 Human

  • Name
  • Description
  • Pricings
  • Quantity
  • PL 7 Human
  • Threonyl-tRNA Synthetase Human Recombinant
  • Shipped with Ice Packs

Catalogue number



Threonyl-tRNA synthetase cytoplasmic, EC, Threonine-tRNA ligase, ThrRS, MGC9344, PL-7, TARS.


Threonyl-tRNA Synthetase is a member of the aminoacyl-tRNA synthetase family, key enzymes of protein biosynthesis which charge tRNA molecules with the respective amino acids. This 83 kDa protein is an autoantigen recognized by PL-7 antibodies which occur in a subset of patients with polymyositis and dermatomyositis. Preliminary data suggest that PL-7 antibodies (similar to Jo-1 antibodies) indicate an increased risk for lung involvement, but this needs to be confirmed for a larger number of cases.


Threonyl-tRNA Synthetase Human Recombinant produced in SF9 is a glycosylated, polypeptide chain having a molecular mass of 83,312 Dalton.
PL-7 is expressed with a -6xHis tag and purified by proprietary chromatographic techniques.


Sf9 insect cells.

Physical Appearance

Sterile Filtered clear solution.


PL-7 is supplied in 20mM HEPES buffer pH-8, 200mM sodium chloride, and 20% glycerol.

Immunological functions

1. Binds IgG-type human auto-antibodies.
2. Standard ELISA test (checker-board analysis of positive/negative sera panels immuno-dot test).

Coating concentration

0.3-0.8 µg/ml (depending on the type of ELISA plate and coating buffer).
Suitable for biotinylation and iodination.


Store at 4°C if entire vial will be used within 2-4 weeks. 
Store, frozen at -20°C for longer periods of time. 
Avoid multiple freeze-thaw cycles.


Greater than 90% as determined by SDS-PAGE.


Prospec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.
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