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IL-31, IL31, Interleukin-31
Human IL-31 Protein, premium grade (IL1-H5219) is expressed from human 293 cells (HEK293). It contains AA Ser 24 - Thr 164 (Accession # Q6EBC2-1).
Predicted N-terminus: Ser 24
It is produced under our rigorous quality control system that incorporates a comprehensive set of tests including sterility and endotoxin tests. Product performance is carefully validated and tested for compatibility for cell culture use or any other applications in the early preclinical stage. When ready to transition into later clinical phases, we also offer a custom GMP protein service that tailors to your needs. We will work with you to customize and develop a GMP-grade product in accordance with your requests that also meets the requirements for raw and ancillary materials use in cell manufacturing of cell-based therapies.
This protein carries no "tag".
The protein has a calculated MW of 15.8 kDa. The protein migrates as 18-20 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) due to glycosylation.
Human IL-31 Protein, premium grade(IL1-H5219) was digested with trypsin and characterized by LC-MS/MS peptide mapping, achieving 100% sequence coverage (Routinely tested).
Less than 0.1 EU per μg by the LAL method / rFC method.
Negative
Negative
>90% as determined by SDS-PAGE.
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.
Contact us for customized product form or formulation.
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
This product is shipped at ambient temperature.
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.