ERBB2 Polyclonal Antibody

Uniprot : P04626
  • Cat.No.:E-AB-32198

  • Host: Rabbit
  • Reactivity: H,M,R
  • Applications: WB,IHC-p,IF,ELISA

To Purchase E-AB-32198

Size:
  • 20μL
  • 60μL
  • 120μL
  • 200μL
Price: $69
Qty:

Test Application

  • Verified Samples

    Reactivity Application
    Human WB
    (293,AD293,22RV1,Hela,)

    Western Blot analysis of 293 cells using ERBB2 Polyclonal Antibody at dilution of 1:2000.

    Western Blot analysis of various cells using ERBB2 Polyclonal Antibody at dilution of 1:2000.

    Western Blot analysis of various cells using ERBB2 Polyclonal Antibody at dilution of 1:2000.

    Western Blot analysis of various cells using ERBB2 Polyclonal Antibody at dilution of 1:2000.

  • Dilution

    WB 1:500-1:2000, IHC 1:100-1:300, IF 1:200-1:1000, ELISA 1:20000

Preparation of protein samples

1.Protein extraction

1)For tissue sample
a. Take the samples, wash the tissue thoroughly with pre-cooled PBS (0.01 M, pH=7.4)(Cat# E-BC-R187) to remove the surface blood and internal debris.
b. Weigh and smash the tissue, add an appropriate ratio of RIPA Lysis Buffer (Cat# E-BC-R327)(add 10 μL PMSF and 10 μL Na3VO4 to each 1 mL RIPA Lysis) and homogenizely lyse the tissue.
It is recommended to homogenize according to the ratio of tissue weight: RIPA volume = 3:10. For example, add 1 mL RIPA Lysis Buffer to 0.3 g tissue sample, the specific volume can be adjusted according to experimental requirements.
c. Shake and lyse on the ice for 30 min after homogenization. And then sonicate the sample for 1 min (under ice water bath conditions) with 2 s’ sonication and 2 s’ intervals to make cells fully lysis and reduce the viscosity of sample.
d. Centrifuge at 12,000 rpm for 10 min at 4℃.
e. Take the supernatant and measure the protein concentration mentioned in step2.

2)For cell sample
a. Collect the cells, wash them thoroughly with pre-cooled PBS (0.01 M, pH=7.4) to remove the medium off (it is generally recommended to wash 3 times).
b. Add an appropriate ratio of RIPA Lysate Buffer (10 μL PMSF and 10 μL Na3VO4 in each 1 mL RIPA Lysis) and lyse on the ice for 30 min.
It is recommended to add 0.1 mL of RIPA Lysis Buffer to each well of a 6-well plates (the protein content in different cells may vary, and the volume of the lysate added can be appropriately adjusted).
c. Sonicate the sample for 1 min (under ice water bath conditions) with 2 s’ sonication and 2 s’ intervals to make cells fully lyse and reduce viscosity of sample.
d. Centrifuge at 12,000 rpm for 10 min at 4℃.
e. Take the supernatant and measure the protein concentration mentioned in step2.

2.Measurement of protein concentration
By the BCA method (see the Total Protein Colorimetric Assay Kit (Cat# E-BC-K318) instructions).

3.Boiling the samples
Adjust the protein concentration with PBS Buffer. Add 5 × SDS Loading Buffer (Cat# E-BC-R288) with the ratio of the protein sample: 5 × SDS Loading Buffer = 4:1 and boil the mixture for 10 min. Centrifuge at 12,000 rpm for 2 min and collect the supernatant. The denatured protein can be employed to Western Blot experiments or stored at -20℃ or -80℃.

Note: It is recommended that the total protein loading amount of test sample is about 50 μg in each well. Try to make the loading volume of each sample close to 10 μL.

Electrophoresis

1.According to the molecular weight of the target protein, prepare 0% separation gel. Add the test sample to each well, and add 5 μL of Pre-stained Protein Marker (Cat# E-BC-R273)to a reserved well in order to verify the target molecular weight and the extent of membrane transfer. Add Electrophoresis Buffer ( Cat# E-BC-R331) and start electrophoresis.

2.Electrophoresis at 80v when the samples are in stacking gel, then convert to 120v when the blue flow into the separating gel. Electrophoresis time is about 2-3 h till bromophenol blue reaches the bottom of the gel.

Transfer Membrane (Wet transfer)

1.Choose the PVDF Membrane (Cat# ) with a pore size of μm according to the molecular weight of the target protein. Soak the PVDF Membrane in methanol for 1 min to activate it, and then soak the PVDF Membrane in the Transmembrane Buffer (Cat# E-BC-R333), the filter paper and fiber mat must be soaked in the Transmembrane Buffer for use too.

2.Place the following materials in the order of the black plate (negative electrode) - fiber mat - filter paper - gel - PVDF Membrane - filter paper - fiber mat - white plate (positive electrode) are placed in order, discharge bubbles, clamp and place in the wet transfer tank. The recommended transmembrane conditions are . Make sure that the transmembrane process is carried out at low temperatures.
Note: This is for wet transfer. If other transmembrane methods are used, please adjust according to the specific conditions.

3.After the transmembrane, take out the PVDF Membrane carefully and wash with TBST Buffer for 1 min.

Incubation of antibodies

1.Soak the PVDF Membrane with TBST Buffer (Cat# E-BC-R335) containing 5% Skim Milk Powder as blocking buffer and block the membrane at room temperature for .

2.According to the recommended primary antibody dilution ratio, use the TBST Buffer containing 5% Skim Milk Powder to dilute the Neu Antibody at , soak the PVDF Membrane in the primary antibody working solution, incubate overnight at 4 ℃, and gently shake.

3.Wash the PVDF Membrane with TBST Buffer for .

4.According to the recommended secondary antibody dilution ratio, use a TBST Buffer solution containing 2% Skim Milk Powder to dilute Goat Anti-Rabbit IgG (H+L) (peroxidase/HRP conjugated) (Cat# E-AB-1003) at . Incubate at room temperature for 1 h on a shaker.

5.Wash the PVDF Membrane with TBST Buffer for .

Detection

1.Mix A and B in the Excellent Chemiluminescent Substrate Detection kit (Cat# E-BC-R347) at the ratio of 1:1 as working solution.

2.Take out the PVDF Membrane from TBST Buffer and absorb the liquid with the filter paper. Pave the PVDF Membrane on the detection machine, add ECL working solution continuously on the PVDF Membrane, discharge the bubble and detect the result.

3.Adjust the contrast and the exposure time to get the best image.

Appendix

Product Details

Clonality Polyclonal
Isotype IgG
Concentration 1mg/mL
Storage Store at -20℃. Avoid freeze / thaw cycles.
Buffer PBS with 0.02% sodium azide,0.5% BSA and 50% glycerol pH 7.4.
Purification Method Affinity purification
Research Areas Cancer, Immunology, Signal Transduction, Tags and Cell Markers

Immunogen Details

Immunogen Synthesized peptide derived from the Internal region of human Neu
Abbre Neu
Synonyms Verb b2 erythroblastic leukemia viral oncogene homolog 2,neuro/glioblastoma derived oncogene homolog,C erb B2/neu protein,CD340,CD340 antigen,Cerb B2/neu protein,CerbB2,Erb b2 receptor tyrosine kinase 2,ERBB2,ERBB2,HER 2,HER 2/NEU,HER2,Herstatin,Human epidermal growth factor receptor 2,Metastatic lymph node gene 19 protein,MLN 19,MLN19,NEU,NEU proto oncogene,Neuro/glioblastoma derived oncogene homolog,Neuroblastoma/glioblastoma derived oncogene homolog,NGL,p185erbB2,Proto-oncogene c-ErbB-2,Proto-oncogene Neu,Receptor tyrosine-protein kinase erbB-2,TKR1,Tyrosine kinase type cell surface receptor HER2,Tyrosine kinase-type cell surface receptor HER2,V erb b2 avian erythroblastic leukemia viral oncogene homolog 2 (neuro/glioblastoma derived oncogene homolog),V erb b2 avian erythroblastic leukemia viral oncogene homolog 2,V erb b2 avian erythroblastic leukemia viral oncoprotein 2,V erb b2 erythroblastic leukemia viral oncogene homolog 2,neuro/glioblastoma derived oncogene homolog (avian),V erb b2 erythroblastic leukemia viral oncogene homolog 2,neuro/glioblastoma derived oncogene homolog,Verb b2 erythroblastic leukemia viral oncogene homolog 2,neuro/glioblastoma derived oncogene homolog (avian)
Swissprot P04626
Calculated MW 138kDa
Observed MW 138kDa
Cellular Localization Cytoplasm. Nucleus and Cell membrane. Cytoplasm, perinuclear region. Nucleus. Translocation to the nucleus requires endocytosis, probably endosomal sorting and is mediated by importin beta-1/KPNB1.
Tissue Specificity Expressed in a variety of tumor tissues including primary breast tumors and tumors from small bowel, esophagus, kidney and mouth.

Background

Protein tyrosine kinase that is part of several cell surface receptor complexes, but that apparently needs a coreceptor for ligand binding. Essential component of a neuregulin-receptor complex, although neuregulins do not interact with it alone. GP30 is a potential ligand for this receptor. Regulates outgrowth and stabilization of peripheral microtubules (MTs). Upon ERBB2 activation, the MEMO1-RHOA-DIAPH1 signaling pathway elicits the phosphorylation and thus the inhibition of GSK3B at cell membrane. This prevents the phosphorylation of APC and CLASP2, allowing its association with the cell membrane. In turn, membrane-bound APC allows the localization of MACF1 to the cell membrane, which is required for microtubule capture and stabilization.In the nucleus is involved in transcriptional regulation. Associates with the 5'-TCAAATTC-3' sequence in the PTGS2/COX-2 promoter and activates its transcription. Implicated in transcriptional activation of CDKN1A; the function involves STAT3 and SRC. Involved in the transcription of rRNA genes by RNA Pol I and enhances protein synthesis and cell growth.

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