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產(chǎn)品描述:
Interleukin-22 (IL-22) is a member of the IL-10 family of regulatory cytokines which includes IL-10, IL-19, IL-20, IL-22, IL-24 and IL-26. Members of this family share partial homology in their amino acid sequences, but they are dissimilar in their biological functions. Produced by T lymphocytes, IL-22 inhibits IL-4 production by Th2 cells, and induces acute phase reactants in the liver and pancreas. IL-22 signals through a receptor system consisting of IL-10R-β/CRF2-4 and IL-22R, both of which are members of the class II cytokine-receptor family.

表達(dá)系統(tǒng) :
Escherichia coli

溶解方法:
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at < -20°C. Further dilutions should be made in appropriate buffered solutions.

產(chǎn)品組成:
Lyophilized from a 0.2 μm filtered concentrated solution in PBS, pH 5.0.

存儲條件:
This lyophilized preparation is stable at 2-8°C, but should be kept at -20°C for long term storage, preferably desiccated. Upon reconstitution, the preparation is stable for up to one week at 2-8°C. For maximal stability, apportion the reconstituted preparation into working aliquots and store at -20°C to -70°C. Avoid repeated freeze/thaw cycles.

分子量:
Approximately 16.9 kDa,non-disulfide-linked homodimeric protein containing of two 147 amino acid polypeptide chains.

內(nèi)毒素:
Less than 1 EU/μg of IL-22 as determined by LAL method.

產(chǎn)品用途:
This material is offered by Cyagen Biosciences for research, laboratory or further evaluation purposes. FOR RESEARCH USE ONLY. NOT INTENDED FOR ANY ANIMAL OR HUMAN THERAP EUTIC OR DIAGNOSTIC USE.

生物學(xué)活性:
The ED50 determined by inducing IL-10 secretion of human COLO 205 cells is less than 0.3 ng/mL, corresponding to a specific activity of > 3.3 × 10⁶ IU/mg.

產(chǎn)品形態(tài):
Sterile filtered white lyophilized (freeze-dried) powder.

氨基酸序列:
MAPISSHCRL DKSNFQQPYI TNRTFMLAKE ASLADNNTDV RLIGEKLFHG VSMSERCYLM KQVLNFTLEE VLFPQSDRFQ PYMQEVVPFL ARLSNRLSTC HIEGDDLHIQ RNVQKLKDTV KKLGESGEIK AIGELDLLFM SLRNACI

產(chǎn)品純度:
> 97% by SDS-PAGE and HPLC analyses.