NRPA18S / NRPA18 V1S

Product Name:

Recombinant Core Streptavidin 2

Streptavidin (Streptavidin,SA) is a homotetrameric protein secreted by Streptomyces avidin (Streptomyces avidinii) during growth. Like avidin, one mole of streptavidin can bind four moles of biotin, with a high affinity for biotin. Since streptavidin does not contain sugar groups and the isoelectric point is close to neutral, streptavidin has a lower level of non-specific binding in detection applications than pro-biotin. Compared with the natural streptavidin, the recombinant core streptavidin 2 removes the sequence unrelated to the activity, only retains the core sequence related to the activity, and is superior to the natural streptavidin in stability and solubility. (The recombinant streptavidin 2 pI:6.09) The product has been widely used in a variety of biotechnology fields, such as: coating microplates for immunodetection, preparing SA-coupled enzyme preparations, SA-coupled fluorescein, SA-coupled magnetic beads, etc., and then participating in enzyme-linked immunosorbent and enzyme catalytic amplification experiments, immunohistochemistry, biological molecule purification, biosensors, biological nanospheres, pre-targeted pharmaceutical research and biochip materials, etc.

Product features and technical indicators

Product Name	Recombinant Core Streptavidin 2(Recombinant Core Streptavidin 2, r-cSA2)
Catalog No.	NRPA18 / NRPA18 V1
Specifications	1 mg,10 mg,100 mg,500 mg
NRPA18	Freeze dried powder (5mM PB,pH 7.4)
NRPA18V1	Freeze dried powder (5mM HEPES buffer, trehalose, TCEP,pH 8.0)
molecular weight	Tetramer 53.2kDa, Monomer 13.3kDa
activity	≥ 16 U/mg protein (determined by Green's modified method)
Purity	≥ 95%(SDS-PAGE detection)
concentration determination	UV absorption method, extinction coefficient E(0.1% at 280 nm) = 3.16
Source	Escherichia coli fermentation engineering strain
Save condition	Storage at ≤ -20 ℃
Conditions of transport	Cold transport of ice packs or dry ice
Validity Period	3 years

Note:

1. Recombinant streptavidin 2 lyophilized powder is easily soluble in water, and the solubility can reach 10 mg/mL or higher;
2. It is recommended to use pure water for dissolution;
3. If there are undissolved substances, it is recommended to extend the redissolution time. The insoluble matter can also be removed by centrifugation or other means, and then used in subsequent experiments, which will not have a great impact on the total protein.
4. Considering the particularity of protein, freeze-dried powder is recommended to be used now, and repeated freezing and thawing should be avoided after dissolution. If it needs to be used many times, it is recommended to freeze and store (≤-20 ℃) after subpackaging as required; Avoid long-term storage at 4 ℃.

Key words:

Recombinant Core Streptavidin 2

Classification:

IVD proteins

Download Product Description

Online Preview

Tel: 0571-82872376

E-mail: marketing@nuptec.com

Alibaba official website mall

Get Quote

COA Download

Apply for a trial outfit

COOKIES

Our website uses cookies and similar technologies to personalize the advertising shown to you and to help you get the best experience on our website. For more information, see our Privacy & Cookie Policy

COOKIES

required

These cookies are necessary for basic functions such as payment. Standard cookies cannot be turned off and do not store any of your information.

analyze

These cookies collect information, such as how many people are using our site or which pages are popular, to help us improve the customer experience. Turning these cookies off will mean we can't collect information to improve your experience.

Feature

These cookies enable the website to provide enhanced functionality and personalization. They may be set by us or by third-party providers whose services we have added to our pages. If you do not allow these cookies, some or all of these services may not function properly.

advertise

These cookies help us understand what you are interested in so that we can show you relevant advertising on other websites. Turning these cookies off will mean we are unable to show you any personalized advertising.

NUPTEC Inc. Ltd.

Sales Phone:0571-82872376
Business Phone:0571-82872986
E-mail:marketing@nuptec.com
Headquarters Address: Building 25, Qianwan Zhiqi, Jiangnan Science and Technology City, Hangzhou City, Zhejiang Province
Production Base of Li: No.63, No.5 Road, Dangyuan, Li Town, Xiao District, Hangzhou City, Zhejiang Province
Linjiang Production Base: 698 Jing Lu, Linjiang Street, Qiantang District, Hangzhou City, Zhejiang Province

Online Message →

Sales Phone：0571-82872376

Business Phone：0571-82872986

E-mail：marketing@nuptec.com