Leadgene Leadgene
Human CHI3L1, His Tag, E. coli
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  • Specifications
    • Species of Origin


      Expression System

      Escherichia coli

    • Affinity Tag

      His Tag (C-term)

      Storage Buffer

      Lyophilized from a 0.2 µm filtered solution of PBS, pH 7.4.

    • Purity

      >98% as determined by SDS-PAGE analysis.

      Molecular weight

      The protein has a calculated MW of 41.43 kDa.
      The protein migrates as 40 kDa under reducing condition (SDS-PAGE analysis).

    • Endotoxin Level

      <0.1 EU per 1 μg of the protein by the LAL method.



  • Background
    • Background

      Chitinases and non-enzymatic chitinase-like proteins (CLPs, can bind chitin but cannot digest) belong to Glycoside hydrolase family 18. Human CHI3L1, YKL-40, is a CLP and a 42 kDa protein with 383 amino acid residues. The complex (CHI3L1, IL-13R alpha2 and IL-13) regulate downstream signal transduction pathway related to inflammation, proliferation and metastasis.


      39 kDa synovial protein, Cartilage glycoprotein 39, CGP-39, GP-39, hCGP-39, YKL-40, Chitinase-3-like protein 1

    • Uniprot ID


      Sequence Note


  • Instruction
    • Reconstitution

      It is recommended to reconstitute the lyophilized protein in sterile H₂O to a concentration not less than 200 μg/mL and incubate the stock solution for at least 20 min to ensure sufficient re-dissolved.


      The product is shipped with polar packs. Upon receipt, store it immediately at -20°C or lower for long term storage.

    • Stability & Storage

      This product is stable after storage at:

      • -20°C for 12 months in lyophilized state from date of receipt.
      • -20°C or -80°C for 1 month under sterile conditions after reconstitution.

      Avoid repeated freeze/thaw cycles.

  • Image
    SDS-PAGE analysis of recombinant human CHI3L1.

    SDS-PAGE analysis of recombinant human CHI3L1.

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  • Publication
  • Datasheet & Documents

Disclaimer:For Research Use or Further Manufacturing Only.

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