Proinflammatory and angiogenic cytokine that may be involved in epidermal function and psoriasis. Angiogenic and proliferative activities are antagonized by IL10. May act through STAT3. {ECO:0000269|PubMed:16511554}. Biological Activity: Fully biologically active when compared to standard. The ED50 as determined by a cell proliferation assay using human IL-20Ralpha and human IL-20Rbeta co-transfected murine BaF3 pro-B cells is less than 0.5ng/ml, corresponding to a specific activity of >2*10e6 IU/mg. Sequence: MLKTLNLGSC VIATNLQEIR NGFSEIRGSV QAKDGNIDIR ILRRTESLQD TKPANRCCLL RHLLRLYLDR VFKNYQTPDH YTLRKISSLA NSFLTIKKDL RLCHAHMTCH CGEEAMKKYS QILSHFEKLE PQAAVVKALG ELDILLQWME ETE Molecular Weight: 17.6kD PubMed ID: 11163236, 16511554, 12975309, 16710414, 15489334, 15340161, 16908179, 16709143, 22802649 Gene Name: IL20, ZCYTO10, UNQ852/PRO1801 Swiss Prot: Q9NYY1 Storage and Stability: Lyophilized and reconstituted products are stable for 6 months after receipt at -20C. Reconstitute with sterile PBS. Aliquot to avoid repeated freezing and thawing. Store at -20C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.