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Merck

85878

Streptavidin from Streptomyces avidinii

affinity purified, lyophilized from 10 mM potassium phosphate, ≥13 U/mg protein

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About This Item

CAS Number:
9013-20-1
UNSPSC Code:
12352202
NACRES:
NA.32
MDL number:
MFCD00082035

Key Documents

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Product Name

Streptavidin from Streptomyces avidinii, affinity purified, lyophilized from 10 mM potassium phosphate, ≥13 U/mg protein

form

powder

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

Quality Level

200

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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.

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. The biotin binding pocket of streptavidin helps to interact with biotin. It can be used to enhance protein binding and multimerization.

General description

Streptavidin is a crystalline protein synthesized by Streptomycetes.

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; Avidin-Biotin technology

Packaging

Bottomless glass bottle. Contents are inside inserted fused cone.
The sales quantitites 1 mg and 5 mg

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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Certificates of Analysis (COA)

Lot/Batch Number
SLBM0232V
059M4168V
118M4087V
118M4088V
068M4006V

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D.A. Fuccillo
Biotechniques, 3, 494-494 (1985)
Biofunctionalized self-propelled micromotors as an alternative on-chip concentrating system
Restrepo-Perez L, et al.
Lab on a chip, 14(16), 2914-2917 (2014)
Capture and identification of heterogeneous circulating tumor cells using transparent nanomaterials and quantum dots-based multiplexed imaging
Chen Y Y, et al.
Journal of Cancer, 7(1), 69-69 (2016)
Evolved streptavidin mutants reveal key role of loop residue in high-affinity binding
Magalhaes M L B, et al.
Protein Science, 20(7), 1145-1154 (2011)
Soon Gang Choi et al.
Nature communications, 10(1), 3907-3907 (2019-08-31)
Complementary assays are required to comprehensively map complex biological entities such as genomes, proteomes and interactome networks. However, how various assays can be optimally combined to approach completeness while maintaining high precision often remains unclear. Here, we propose a framework
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