Brand:-
Model:-
MOQ:-0 -
Recombinant Minimum Streptavidin used in ELISA, IHC, TRFIA, quantifying PCR
- Product Name: Recombinant Minimum Streptavidin (r-mSA)
- Catalog Number: NRPA12S
- Packing details: 1 mg, 10 mg, 100 mg, 500 mg
- Formulation: Lyophilized from 10 mM PB (9.9 mM Na2HPO4, 0.1 mM NaH2PO4, pH8.5)
- Mol. Wt.: 12.4 kDa for monomer, 49.6 kDa for tetramer
- Storage condition: -20oC
- Resources: Escherichia coli(E. coli)
- Purity: ≥95% by SDS-PAGE analysis
- Theory pI: 6.07
-
Theoretical Activity: 19.7 U/mg protein (r-mSA:Biotin = 1:4 (mol:mol))
Activity: ≥17 U/mg protein (Determined by NUPTEC according to modified Green Method)
Description:
Streptavidin is a homotetrameric protein secreted from Streptomyces avidinii. Similar to avidin,
one mole of streptavidin can bind 4 moles of biotin with a high affinity . 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.
R-mSA is a 118 amino acid protein which is improved in stability and specificity by the removal
of activity-unrelated sequence compared to native streptavidin.
M: Protein Molecular Weight Marker
&nb