重组人干扰素阿尔法2a/Recombinant Human Interferon-α2a (IFN-α2a)

【简介】

At least 23 different variants of IFN-α are known. The individual proteins have molecular masses between 19-26 kDa and consist of proteins with lengths of 156-166 and 172 amino acids. All IFN-α subtypes possess a common conserved sequence region between amino acid positions 115-151 while the amino-terminal ends are variable. Many IFN-α subtypes differ in their sequences at only one or two positions. Naturally occurring variants also include proteins truncated by 10 amino acids at the carboxy-terminal end.

【说明】

Escherichia coli

【质量控制】

分子量:

Approximately 19.2 kDa, a single non-glycosylated polypeptide chain containing 165 amino acids.

内毒素:

Less than 1 EU/μg of IFN-α2a as determined by LAL method.

产品用途:

This material is offered by propbs Biotechnology for research, laboratory or further evaluation purposes. FOR RESEARCH USE ONLY. NOT INTENDED FOR ANY ANIMAL OR HUMAN THERAP EUTIC OR DIAGNOSTIC USE.

生物学活性:

The specific activity determined by an anti-viral assay is no less than 1.0 × 108 IU/mg.

产品形态:

Sterile filtered white lyophilized (freeze-dried) powder.

氨基酸序列:

CDLPQTHSLG SRRTLMLLAQ MRKISLFSCL KDRHDFGFPQ EEFGNQFQKA ETIPVLHEMI QQIFNLFSTK DSSAAWDETL LDKFYTELYQ QLNDLEACVI QGVGVTETPL MKEDSILAVR KYFQRITLYL KEKKYSPCAW EVVRAEIMRS FSLSTNLQES LRSKE

产品纯度:

> 97% by SDS-PAGE and HPLC analyses.

【成份】

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

【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.

【保存】

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.

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