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AB268631

Recombinant human ErbB2 (V777_G778insCG) protein (Active)

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Recombinant human ErbB2 (V777_G778insCG) protein (Active) is a Human Fragment protein, in the 676 to 1255 aa range, expressed in Baculovirus infected Sf9 cells, with >70%, suitable for SDS-PAGE, FuncS.
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Functional Studies - Recombinant human ErbB2 (V777_G778insCG) protein (Active) (AB268631)
  • FuncS

Supplier Data

Functional Studies - Recombinant human ErbB2 (V777_G778insCG) protein (Active) (AB268631)

The specific activity of ab268631 was determined to be 26 nmol/min/mg in kinase assay using Poly (Glu4, Tyr1) synthetic peptide substrate.

SDS-PAGE - Recombinant human ErbB2 (V777_G778insCG) protein (Active) (AB268631)
  • SDS-PAGE

Supplier Data

SDS-PAGE - Recombinant human ErbB2 (V777_G778insCG) protein (Active) (AB268631)

SDS-PAGE analysis of ab268631.

Key facts

Purity

>70% SDS-PAGE

Expression system

Baculovirus infected Sf9 cells

Tags

GST tag N-Terminus

Applications

SDS-PAGE, FuncS

applications

Biologically active

Yes

Biological activity

The specific activity of ab268631 was determined to be 26 nmol/min/mg in kinase assay using Poly (Glu4, Tyr1) synthetic peptide substrate.

Accession

P04626

Animal free

No

Carrier free

No

Species

Human

Storage buffer

pH: 7.5 Constituents: 25% Glycerol (glycerin, glycerine), 0.87% Sodium chloride, 0.79% Tris HCl, 0.31% Glutathione, 0.004% (R*,R*)-1,4-Dimercaptobutan-2,3-diol, 0.003% EDTA, 0.002% PMSF

storage-buffer

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Complementary Products

Primary Antibodies

AB134182

Anti-ErbB2 / HER2 antibody [EP1045Y]

BOND RX™ Validated|RabMAb|Recombinant|KO Validated|20ul selling size

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-ErbB2 / HER2 antibody [EP1045Y] (AB134182)

  • 4
  • 4
Secondary Antibodies

AB150077

Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488)

Immunocytochemistry/ Immunofluorescence - Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) (AB150077)

  • 5
  • 20
Primary Antibodies

AB205921

Anti-PD-L1 antibody [28-8]

BOND RX™ Validated|20ul selling size|Recombinant|KO Validated|Advanced Validation|RabMAb

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-PD-L1 antibody [28-8] (AB205921)

  • 4
  • 15
Primary Antibodies

AB52894

Anti-EGFR antibody [EP38Y]

BOND RX™ Validated|KO Validated|RabMAb|Lab Essentials|20ul selling size|Recombinant

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-EGFR antibody [EP38Y] (AB52894)

  • 5
  • 24
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Reactivity data

{ "title": "Reactivity Data", "filters": { "stats": ["", "Reactivity", "Dilution Info", "Notes"] }, "values": { "SDS-PAGE": { "reactivity":"TESTED_AND_REACTS", "dilution-info":"", "notes":"<p></p>" }, "FuncS": { "reactivity":"TESTED_AND_REACTS", "dilution-info":"", "notes":"<p></p>" } } }
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Sequence info

[{"linker":null,"sequence":"","proteinLength":"Fragment","predictedMolecularWeight":null,"actualMolecularWeight":null,"aminoAcidEnd":1255,"aminoAcidStart":676,"nature":"Recombinant","expressionSystem":null,"accessionNumber":"P04626","tags":[{"tag":"GST","terminus":"N-Terminus"}]}]
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Properties and storage information

Shipped at conditions
Dry Ice
Appropriate short-term storage conditions
-80°C
Appropriate long-term storage conditions
-80°C
Aliquoting information
Upon delivery aliquot
Storage information
Avoid freeze / thaw cycle
True
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Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

The ErbB2 also known as HER2 or HER2 protein is a transmembrane receptor protein with a molecular weight of about 185 kDa. It serves as part of the epidermal growth factor receptor (EGFR) family of receptor tyrosine kinases. The ErbB2 protein is expressed mainly in epithelial tissues including those of the breast and the gastrointestinal tract. It lacks a known ligand-binding domain which sets it apart from other members of its family. Due to its structure ErbB2 dimerizes with other members of the EGFR family to exert its effects in cellular signaling.
Biological function summary

The role of ErbB2 extends beyond a singular function. It becomes an active component when forming heterodimers with other EGFR family members such as ErbB3 to initiate various downstream signaling cascades. The dimerization activates intracellular pathways leading to cell proliferation survival differentiation and migration. Within cells ErbB2 influences processes critical for normal development and tissue homeostasis contributing significantly to signal transduction networks.

Pathways

ErbB2 plays a pivotal role in pathways such as the PI3K/Akt and MAPK/ERK pathways. These pathways are important in mediating cellular responses to growth signals. The PI3K/Akt pathway activated by HER2 signaling regulates cell growth and survival while the MAPK/ERK pathway contributes to cell differentiation and proliferation. ErbB2's interaction with proteins like ErbB3 is fundamental in these pathways increasing the amplitude and diversity of downstream signals.

ErbB2 is significantly associated with breast cancer and gastric cancer. The overexpression or gene amplification of HER2 is observed in approximately 20% of breast cancer cases correlating with aggressive tumor growth and poor prognosis. ErbB2-related signaling contributes to oncogenic processes by promoting excessive cell proliferation. Targeting ErbB2 in these cancers is common using therapies such as monoclonal antibodies like trastuzumab. In the context of gastric cancer the role of ErbB2 mirrors its function in breast cancer and targeting HER2 holds therapeutic potential.
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Specifications

Form

Liquid

Additional notes

Affinity purified.

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General info

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Product protocols

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Target data

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.
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Product promise

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