Recombinant Streptavidin (r-SA)
Product Name: Recombinant Streptavidin (r-SA)
Packing Details: 1 mg, 10 mg, 100 mg, 500 mg
Formulation: Lyophilized from 5 mM PB, pH 6.3
Mol. Wt.: 16.5 kDa
Resources: Escherichia coli (E. coli)
Purity: ≥95% by SDS-PAGE analysis
Activity: ≥13 U/mg protein (Determined by Youngshe according to modified Green Method)
Storage Condition: -20 oC
Storage Duration: 3 years
Streptavidin is a homotetrameric protein found in the culture broth of Streptomyces avidinii. Similar to avidin, one mole of streptavidin can bind 4 moles of biotin with a high affinity virtually unmatched in nature. Streptavidin lacks carbohydrate side chains present on avidin and has an isoelectric point close to neutrality. Therefore it has a reducing nonspecific binding level as compared to avidin. Streptavidin has been extensively applied in various biological fields, such as ELISA, IHC, TRFIA, quantifying PCR, isolation of single-stranded nucleotide, purification of biomolecule, and monoclonal antibody production as well.
Packaging & Shipping
plastic/glass bottle, aluminium foil bag or customized according to requests, well protected.
FedEx/DHL/EMS or by air.
Hair / Eyebrow / Eyelash growth
Palmitoyl Tripeptide-1 / Pal-GHK
Youngshe Chem only makes high quality peptide.
Q1: Can I get some samples?
A: Yes, we can supply the free sample in some peptide, but the shipping cost is paid by your side.
Q2: How do I make an order?
A: Simply click our Head Portraits on the right of the website page.Then,you can talk with us.We will contact you and be happy to assist you with your order.
Q3: How to start orders or make payments?
A: Proforma invoice will be sent first after confirmation of order, enclosed our bank information.We accept T/T (Telegraphic Transfer),Western Union or Paypal or Escrow(Alibaba).
Q4: How about delivery leadtime?
A:Delivery lead time: About 3-5 days after payment confirmed. (Chinese holiday not included)
Q5:Is there a discount?
A:Different quantity has different discount.
Q6: How do you treat quality complaint?
A:First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem caused by us, we will send you free goods for replacement or refund your loss.
More infomation or free sample, feel free to contact us:-)
Email:zoe (at) youngshechem.com