SRP3055

Heregulin beta -1 human

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

• 别名: NRG1-b1, Neuregulin1
• 分類程式碼代碼: 12352202
• NACRES: NA.32

属性

• 生物源: human
• 重組細胞: expressed in E. coli
• 化驗: ≥98% (HPLC); ≥98% (SDS-PAGE)
• 形狀: lyophilized
• 效力: ≤0.5 ng/mL
• 分子量: 7.5 kDa
• 包裝: pkg of 50 μg
• 技術: cell culture | mammalian: suitable
• 雜質: <0.1 EU/μg endotoxin, tested
• 顏色: white to off-white
• UniProt登錄號: Q02297
• 運輸包裝: wet ice
• 儲存溫度: −20°C
• 基因資訊: human ... NRG1(3084)

说明

一般說明

Neuregulin/Heregulin is a family of structurally related polypeptide growth factors derived from alternatively spliced genes (NRG1, NRG2, NRG3 and NRG4). 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. The gene HRG1-β1 is mapped to human chromosome 8p12. Recombinant human Heregulin-β1 is a 7.5 kDa polypeptide consisting of only the EGF domain of heregulin-β1 (65 amino acid residues).

應用

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

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

生化／生理作用

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. 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. 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).

序列

SHLVKCAEKE KTFCVNGGEC FMVKDLSNPS RYLCKCPNEF TGDRCQNYVM ASFYKHLGIE FMEAE

外觀

Lyophilized with no additives.

重構

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.

安全信息

• 儲存類別代碼: 11 - Combustible Solids
• 水污染物質分類（WGK）: WGK 3
• 閃點（°F）: Not applicable
• 閃點（°C）: Not applicable