ERBB2 Antibody

Herstatin, Mouse Anti Human
Cat. No.
BT17012
Source
Synonyms
NEU, NGL, HER2, TKR1, HER-2, c-erb B2, HER-2/neu, Receptor tyrosine-protein kinase erbB-2, EC 2.7.10.1, p185erbB2, C-erbB-2, NEU proto-oncogene, Tyrosine kinase-type cell surface receptor HER2, MLN 19, CD340 antigen.
Appearance
Purity
Usage
THE BioTek's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.
Shipped with Ice Packs
In Stock

Description

Product Specs

Introduction
HER-2/neu (erbB-2) is a gene that encodes a 185-kDa orphan receptor tyrosine kinase. This kinase is constitutively active in its dimeric form and exhibits strong oncogenic activity when overexpressed. Herstatin, derived from an alternative HER-2 transcript that retains intron 8, acts as an inhibitor of p185HER-2. Herstatin disrupts p185HER-2 dimers, reduces its tyrosine phosphorylation, and inhibits the anchorage-independent growth of transformed cells overexpressing HER-2. While herstatin mRNA is found in normal human fetal kidney and liver, it is expressed at lower levels compared to p185HER-2 mRNA in carcinoma cells with amplified HER-2 genes.
Species Reactivity
The ERBB2 antibody specifically targets an epitope on the Human ERBB2 protein, excluding the last 79 amino acid residues.
Formulation
The ERBB2 antibody is provided as a lyophilized powder in a buffer containing 0.05M phosphate buffer and 0.1M NaCl, at a pH of 7.2. This formulation is AZIDE FREE.
Solubility
To reconstitute the lyophilized ERBB2 antibody, add deionized water to the vial and allow the pellet to dissolve completely. A slight turbidity may be observed after reconstitution, but this does not affect the antibody's activity. If desired, the solution can be clarified by centrifugation.
Stability
The lyophilized ERBB2 antibody can be stored at -20°C for long-term stability and activity retention. Once reconstituted, it is recommended to aliquot the antibody and store it at -80°C to avoid repeated freeze-thaw cycles. The reconstituted antibody remains stable at 4°C for a limited period, showing no significant activity decline after one week.
Applications
This ERBB2 antibody is suitable for use in various applications, including ELISA and Western blotting.
Synonyms
NEU, NGL, HER2, TKR1, HER-2, c-erb B2, HER-2/neu, Receptor tyrosine-protein kinase erbB-2, EC 2.7.10.1, p185erbB2, C-erbB-2, NEU proto-oncogene, Tyrosine kinase-type cell surface receptor HER2, MLN 19, CD340 antigen.
Type
Mouse Anti Human Monoclonal.
Clone
P7H3BV.
Immunogen
Anti-human ErbB2 mAb, is derived from mice immunized with the recombinant human ErbB2 (43.4 kDa, 397 a.a. and one extra N-terminal Methionin) purified from E. coli.
Ig Subclass
IgG2b.
Antigen Amino Acid Sequence
MTQVCTGTDM KLRLPASPET HLDMLRHLYQ GCQVVQGNLE LTYLPTNASL SFLQDIQEVQ GYVLIAHNQV RQVPLQRLRI TQVCTGTDM KLRLPASPET HLDMLRHLYQ GCQVVQGNLE LTYLPTNASL SFLQDIQEVQ GYVLIAHNQV RQVPLQRLRI VRGTQLFEDN YALAVLDNGD PLNNTTPVTG ASPGGLRELQ LRSLTEILKG GVLIQRNPQL CYQDTILWKD IFHKNNQLAL TLIDTNRSRA CHPCSPMCKG SRCWGESSED CQSLTRTVCA GGCARCKGPL PTDCCHEQCA AGCTGPKHSD CLACLHFNHS GICELHCPAL VTYNTDTFES MPNPEGRYTF GASCVTACPY NYLSTDVGSC TLVCPLHNQE VTAEDGTQRC EKCSKPCARG THSLPPRPAA VPVPLRMQPG PAHPVLSFLR PSWDLVSAFY SLPLAPLSPT SVPISPVSVG RGPDPDAHVA VDLSRYEG.

Product Science Overview

Introduction

Herstatin is a product of an alternative transcript of the HER-2/neu (erbB-2) gene, which encodes an 185-kDa orphan receptor tyrosine kinase. This receptor is constitutively active as a dimer and displays potent oncogenic activity when overexpressed . Herstatin retains intron 8 of the HER-2 gene, leading to the production of a unique protein that plays a significant role in inhibiting the oncogenic activity of p185HER-2 .

Expression and Function

Herstatin mRNA is expressed in normal human fetal kidney and liver tissues but is found at reduced levels in carcinoma cells that contain an amplified HER-2 gene . Herstatin functions as an inhibitor of p185HER-2 by disrupting dimers, reducing tyrosine phosphorylation of p185, and inhibiting the anchorage-independent growth of transformed cells that overexpress HER-2 .

Mouse Anti Human Herstatin Antibody

The Mouse Anti Human Herstatin antibody is a monoclonal antibody derived from mice immunized with recombinant human ErbB2 . This antibody is used in various scientific applications, including ELISA, Western blotting, immunohistochemistry, and flow cytometry . The antibody is lyophilized in a phosphate buffer and remains stable and fully active when stored at -20°C .

Applications and Stability

The Mouse Anti Human Herstatin antibody is used to detect Her-2 (ErbB2) in human, mouse, rat, canine, and non-human primate samples . It is recommended to reconstitute the lyophilized antibody with deionized water and store it at -80°C to avoid repeated freezing/thawing cycles . The reconstituted antibody can be stored at 4°C for a limited period without a decline in activity .

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