Name : Human Latexin Protein

Product Source :
Recombinant Human Latexin Protein is expressed from E.coli with His tag at the N-Terminus. It contains Glu2-Glu222.[Accession | AAH05346]

Molecular Weight :
The protein has a predicted MW of 27.16 kDa. The protein migrates to 30-35 kDa based on Tris-Bis PAGE result.

Endotoxin Level :
Less than 1EU per μg by the LAL method.

Purity :
> 95% as determined by Tris-Bis PAGE> 95% as determined by HPLC

Formulation :
Lyophilized from 0.22μm filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization.

Reconstitution :
Centrifuge the tube before opening. Reconstituting to a concentration more than 100 μg/ml is recommended. Dissolve the lyophilized protein in distilled water.

Storage and Stability :
-20 to -80°C for 12 months as supplied from date of receipt.-80°C for 3-6 months after reconstitution.2-8°C for 2-7 days after reconstitution.Recommend to aliquot the protein into smaller quantities for optimal storage. Please minimize freeze-thaw cycles.

Product Concentration :
Tris-Bis PAGE Human Latexin on Tris-Bis PAGE under reduced condition. The purity is greater than 95%. SEC-HPLC The purity of Human Latexin is greater than 95% as determined by SEC-HPLC. Bioactivity Data Measured by its ability to inhibit carboxypeptidase A1 cleavage of the colorimetric peptide substrate Ac-Phe-Thiaphe-OH in the presence of 5,5’Dithio-bis (2-nitrobenzoic acid) (DTNB). The IC50 value is

Background :
Latexin, the endogenous protein inhibitor of the A/B subfamily of metallocarboxypeptidases, is expressed in small nociceptive neurons in sensory ganglia and in a subset of neurons in the telencephalon. Recently, the latexin (Lxn) gene was identified as a potential tumor suppressor in several types of solid tumors and lymphoma, and Lxn expression was found to be absent or downregulated in leukemic cells.

Synonyms :
ECI; MUM; TCI; LXN

References & Citations :
(1) Jin M, Ishida M, Katoh-Fukui Y, Tsuchiya R, Higashinakagawa T, Ikegami S, Arimatsu Y. Reduced pain sensitivity in mice lacking latexin, an inhibitor of metallocarboxypeptidases. Brain Res. 2006 Feb 23;1075(1):117-21. doi: 10.1016/j.brainres.2005.12.099. Epub 2006 Feb 15. PMID: 16469302.

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