The atomic mass of this product is not characterized for the finished goods. However, according to the following publication, the apparent molecular weight under SDS-PAGE analysis seems to be about 66 kDa. The reference publication is AIMS Biophysics, 7(4): 236–247.
85878
Streptavidin from Streptomyces avidinii
affinity purified, lyophilized from 10 mM potassium phosphate, ≥13 U/mg protein
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About This Item
Form:
powder
Mol wt:
Mr ~60000
Pricing and availability is not currently available.
form
powder
Quality Segment
quality
affinity purified, lyophilized from 10 mM potassium phosphate
specific activity
≥13 U/mg protein
mol wt
Mr ~60000
solubility
H2O: 1 mg/mL, clear to hazy, colorless to faintly yellow
storage temp.
−20°C
General description
Streptavidin is a crystalline protein synthesized by Streptomycetes.[1]
Application
Streptavidin from Streptomyces avidinii has been used:
- in the pre-functionalization of self-propelled catalytic micromotors
- in the fabrication and modification of hydroxyapatite-chitosan (HA-CTS) nanofilm-coated substrates
- as an analyte to bind biomolecules to the gold-inverted polymer solar cells (Au-IPSC)
Biochem/physiol Actions
Streptavidin is a biotin binding protein and has the ability to bind four molecules of biotin.[1] The biotin binding pocket of streptavidin helps to interact with biotin. It can be used to enhance protein binding and multimerization.
Packaging
Bottomless glass bottle. Contents are inside inserted fused cone.
The sales quantitites 1 mg and 5 mg
Analysis Note
Binding capability: Streptavidin binds one molecule of biotin per subunit. Comparison of biotin binding and absorbance measurements indicates that ≤5% binding sites are occupied.
Other Notes
1 U corresponds to the amount of protein which binds 1μg (+)-biotin at pH 7.5
Review: Application of the avidin-biotin technique in microbiology; Protein isolated from the bacterium Streptomyces avidinii, having a high affinity for biotin[2]; Avidin-Biotin technology
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This Item | |||
|---|---|---|---|
| form powder | form lyophilized powder | form - | form essentially salt-free, lyophilized powder |
| mol wt Mr ~60000 | mol wt - | mol wt - | mol wt ~60 kDa |
| solubility H2O: 1 mg/mL, clear to hazy, colorless to faintly yellow | solubility - | solubility - | solubility - |
| specific activity ≥13 U/mg protein | specific activity - | specific activity - | specific activity ≥13 units/mg protein |
| storage temp. −20°C | storage temp. −20°C | storage temp. −20°C | storage temp. −20°C |
| Quality Level 200 | Quality Level 200 | Quality Level 200, 400 | Quality Level 200 |
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Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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What is the atomic mass of this Streptavidin? Is it 66 kDa?
1 answer-
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Is this a recombinant or native protein?
1 answer-
This product is native streptavidin that has been affinity purified from fermentation cultures of Streptomyces avidinii.
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