SRP3055

Heregulin beta -1 human

Animal-component free, recombinant, expressed in E. coli, ≥98% (SDS-PAGE), ≥98% (HPLC), suitable for cell culture

• Synonim(y): NRG1-b1, Neuregulin1
• Kod UNSPSC: 12352202
• NACRES: NA.32

Właściwości

• pochodzenie biologiczne: human
• rekombinowane: expressed in E. coli
• Próba: ≥98% (HPLC); ≥98% (SDS-PAGE)
• Formularz: lyophilized
• siła działania: ≤0.5 ng/mL
• masa cząsteczkowa: 7.5 kDa
• opakowanie: pkg of 50 μg
• metody: cell culture | mammalian: suitable
• zanieczyszczenia: <0.1 EU/μg endotoxin, tested
• kolor: white to off-white
• numer dostępu UniProt: Q02297
• Warunki transportu: wet ice
• temp. przechowywania: −20°C
• informacje o genach: human ... NRG1(3084)

Opis

Opis ogólny

Neuregulin/Heregulin is a family of structurally related polypeptide growth factors derived from alternatively spliced genes (NRG1, NRG2, NRG3 and NRG4).[1] HRG1-β1 (heregulin-β1, also referred to as NRG1-β1) contains an Ig (immunoglobulin) domain and an EGF (epidermal growth factor)-like domain that is necessary for direct binding to receptor tyrosine kinases erb3 and erb4.[2][3] The gene HRG1-β1 is mapped to human chromosome 8p12.[4] Recombinant human Heregulin-β1 is a 7.5 kDa polypeptide consisting of only the EGF domain of heregulin-β1 (65 amino acid residues).

Zastosowanie

Heregulin beta -1 human has been used to enhance proliferation of human dermal fibroblasts (hDFs).[5]

Heregulin-β1 human has been used in the culture medium for the maintenance of Schwann cells.[6] It has been used to study P-Rex1 (PI(3,4,5)P3-dependent Rac exchanger 1)-driven fibroblast invasiveness.[7]

Działania biochem./fizjol.

To date, there are over 14 soluble and transmembrane proteins derived from the NRG1 (neuregulin1) gene. Proteolytic processing of the extracellular domain of the transmembrane NRG1 isoforms release soluble growth factors.[8] HRG1-β1 (heregulin-β1, also referred to as NRG1-β1) binding to receptor tyrosine kinases erb3 and erb4 induces erb3 and erb4 heterodimerization with erb2, stimulating intrinsic kinase activity, which leads to tyrosine phosphorylation.[2][9] Although HRG1-β1 biological effects is still unclear, it has been found to promote motility and invasiveness of breast cancer cells which may also involve up-regulation of expression and function of the autocrine motility-promoting factor (AMF).[9]

Sekwencja

SHLVKCAEKE KTFCVNGGEC FMVKDLSNPS RYLCKCPNEF TGDRCQNYVM ASFYKHLGIE FMEAE

Postać fizyczna

Lyophilized with no additives.

Rekonstytucja

Centrifuge the vial prior to opening. Reconstitute in water to a concentration of 0.1-1.0 mg/ml. Do not vortex. This solution can be stored at 2-8°C for up to 1 week. For extended storage, it is recommended to further dilute in a buffer containing a stabilizer (example 5% Trehalose) and store in working aliquots at -20°C to -80°C.

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Informacja o środkach bezpieczeństwa

• Kod klasy składowania: 11 - Combustible Solids
• Klasa zagrożenia wodnego (WGK): WGK 3
• Temperatura zapłonu (°F): Not applicable
• Temperatura zapłonu (°C): Not applicable