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The company has successfully built a complete protein expression technology platform and has a variety of protein expression systems, which can perform protein expression of various scales according to customers' requirements: prokaryotic protein expression and purification, yeast protein expression and purification, insect cell protein expression and purification, mammalian cell protein expression and purification. According to the needs of our customers, we provide one-stop services from gene synthesis, vector construction, protein expression, protein purification and detection.


In order to ensure the quality of protein, the company has established a strict product quality control system and a complete set of customer service process, confidentiality system, to ensure that to provide customers with high-quality products and mature services to meet the personalized needs of customers.

Q
How to choose the suitable protein expression systems?
According to the source of protein (bacteria, animals, or others) and the purpose of experiment, we will choose a suitable protein expression system. If you don't know how to choose, please consult the online customer service, we will recommend suitable expression system for you.
Q
How to distinguish peptide synthesis and protein expression?
<50aa generally peptide synthesis, >50aa it’s hard to do peptide synthesis, better to do protein expression.
Q
What will affect price of gene synthesis and expression?
It depends on the length and complexity. Protein expression costs mainly by the expression system, quality and purity of target protein, and other special requirements, such as tag removal and endotoxin level control, special labels, etc.
Q
What are impurities in the process of protein expression?
Most impurities are substances in cells or culture media, which can be removed by chromatography.
Q
How to confirm the purity and quality of protein?
Purity: a. SDS-PAGE; b. HPLC; c. silver staining. And SDS-PAGE is used as the default. Concentration: a. Bradford protein assay; B. Bicinchoninic Acid(BCA); Default to Bradford, if there is a effect in buffer we will use BCA; Antibodies are A280.
Q
Under what conditions do proteins usually preserve well?
Divide the protein equally and store it for a long time at - 80 ℃ or in liquid nitrogen, and avoid repeated freezing and thawing.
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