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Product Details
Synonyms
ERBB2, CD340, HER-2, neu, HER2, MLN19, NEU, NGL, TKR1
Source
MABSol® Biotinylated Human Her2, His Tag, primary amine labeling, long spacer (HE2-H822R) is expressed from human HEK293 cells. It contains AA Thr 23 - Thr 652 (Accession # P04626-1). It is the biotinylated form of Human Her2, His Tag (Cat. No. HE2-H5225).
Predicted N-terminus: Thr 23
Request for sequenceMolecular Characterization
Other Tags and Version Biotin & Other Labeled Version
This protein carries a polyhistidine tag at the C-terminus.
The protein has a calculated MW of 70.2 kDa. The protein migrates as 90-110 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) due to glycosylation.
Labeling
The primary amines in the side chains of lysine residues and the N-terminus of the protein are conjugated with biotins using standard chemical labeling method. A specially optimized long-spacer biotin reagent (32.5 angstroms) is used in this product to minimize potential steric hindrance.
Protein Ratio
Passed as determined by the HABA assay / binding ELISA.
Endotoxin
Less than 1.0 EU per μg by the LAL method / rFC method.
Purity
>95% as determined by SDS-PAGE.
>90% as determined by SEC-MALS.
Formulation
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.
Contact us for customized product form or formulation.
Reconstitution
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
Storage
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
- -20°C to -70°C for 24 months in lyophilized state;
- -70°C for 12 months under sterile conditions after reconstitution.
ACRO Quality Management System
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Performance Data
SDS-PAGE
Biotinylated Human Her2, His Tag, primary amine labeling, long spacer on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 95% (With Star Ribbon Pre-stained Protein Marker).
SEC-MALS
The purity of Biotinylated Human Her2, His Tag, primary amine labeling, long spacer (Cat. No. HE2-H822R) is more than 90% and the molecular weight of this protein is around 70-110 kDa verified by SEC-MALS.
Report
Bioactivity-ELISA
Immobilized Trastuzumab at 3 μg/mL (100 μL/well) can bind Biotinylated Human Her2, His Tag, primary amine labeling, long spacer (Cat. No. HE2-H822R) with a linear range of 0.1-3.1 ng/mL (QC tested).
Protocol
Bioactivity-BLI
Immobilized Herceptin on SA Biosensor via Biotinylated Human Her2, His Tag, primary amine labeling, long spacer (Cat. No. HE2-H822R), can bind Human FCGRT&B2M Heterodimer Protein, His Tag&Strep II Tag (SPR & BLI verified) (Cat. No. FCM-H5286) with an affinity constant of 1.32 μM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).
Protocol
Bioactivity-FACS
2e5 of Anti-Her2 CAR-293 cells were stained with 100 μL of 1μg/mL of Biotinylated Human Her2, His Tag, primary amine labeling, long spacer (Cat. No. HE2-H822R) and negative control protein respectively, washed and then followed by PE-SA and analyzed with FACS (Routinely tested).
Protocol
Customer Reviews Writing Reviews
m***t2023-01-09
LikesI used this protein for four years now with no troubles. It's my reference for octet (BLI) analysis :). The biothynlation of the protein is a great advantage for this kind of use. Even after a long time at -80°C the protein is stable and works very well for our analysis. The disversity of chemical groups like polyHis moiety on this type of coumpound allow the use of the protein in various methods.
Background
Recent Advances
Drug Development Progress- English Name：
Receptor protein-tyrosine kinase erbB-2
- Category：
- Approved Drugs：
47 Details
- Drugs in Clinical Trials：
238 Details
- Highest Development Stage：
Approved
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