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Streptavidin

Streptavidin is a crystalline protein isolated from the bacterium Streptomyces avidinii and possesses biotin-binding ability. The dissociation constant (Kd) of the biotin-streptavidin complex is about ~1015 M.Streptavidin has an immunosuppressive role. The Streptavidin protein solution contains 50mM Tris-HCl pH-8 & 0.15M NaCl.

Streptavidin Chemical Structure

Streptavidin Chemical Structure

CAS: 9013-20-1

Purity & Quality Control

Batch: E295901 DMSO] 100 mg/mL] false] Water] 100 mg/mL] false] Ethanol] Insoluble] false Purity: 99.07%
99.07

Streptavidin Related Products

Biological Activity

Description Streptavidin is a crystalline protein isolated from the bacterium Streptomyces avidinii and possesses biotin-binding ability. The dissociation constant (Kd) of the biotin-streptavidin complex is about ~1015 M.Streptavidin has an immunosuppressive role. The Streptavidin protein solution contains 50mM Tris-HCl pH-8 & 0.15M NaCl.

Chemical Information & Solubility

Molecular Weight Formula
CAS No. 9013-20-1 SDF --
Density g/mL
Storage (From the date of receipt) Streptavidin although stable 20℃ for 1 week, should be stored at 4¡ã

In vitro
Batch:

DMSO : 100 mg/mL ( ； Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Water : 100 mg/mL

Ethanol : Insoluble


Molecular Weight Calculator

In vivo
Batch:

Add solvents to the product individually and in order.


In vivo Formulation Calculator

Preparing Stock Solutions

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

mg/kg g μL

Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

% DMSO % % Tween 80 % ddH2O
%DMSO %

Calculation results:

Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
as vortex, ultrasound or hot water bath can be used to aid dissolving.

Tech Support

Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

Handling Instructions

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