| 货号 | AFL235 |
| 别名 | fibroblast growth factor 4; HBGF-4; HBGF-4Transforming protein KS3; heparin secretory transforming protein 1; Heparin secretory-transforming protein 1; Heparin-binding growth factor 4; HST-1; HST-1HSTF-1; HSTF1fibroblast growth factor 4 splice isoform; HSTFGF-4; human stomach cancer, transforming factor from FGF-related oncogene; kaposi sarcoma oncogene; KFGF; K-FGF; KS3; oncogene HST | 全称 | Fibroblast Growth Factor 4 |
| 反应种属 | Human |
| 来源 | E. coli-derived Ser54-Leu206 Produced using non-animal reagents in an animal-free laboratory. |
| 产品组分 |
| 供应商 | R&D Systems |
| Entrez Gene IDs | 2249 (Human); 14175 (Mouse); 116499 (Rat) |
| 内毒素水平 | <0.01 EU per 1 μg of the protein by the LAL method. |
| 生物活性 | Measured in a cell proliferation assay using NR6R‑3T3 mouse fibroblast cells. Raines, E.W. et al. (1985) Methods Enzymol. 109:749. The ED50 for this effect is typically 0.25-1.25 ng/mL. |
| 溶解方法 | Reconstitute at 0.2 mg/mL in sterile PBS. |
| 背景 | FGF-4 (fibroblast growth factor-4), also known as FGF-K or K-FGF (Kaposi’s sarcoma-associated FGF), is a 25 kDa secreted, heparin-binding member of the FGF family (1, 2). The human FGF-4 cDNA encodes 206 amino acids (aa) with a 33 aa signal sequence and a 173 aa mature protein with an FGF homology domain that contains a heparin binding region near the C-terminus (2). Mature human FGF-4 (aa 71-206) shares 91%, 82%, 94% and 91% aa identity with mouse, rat, canine and bovine FGF-4, respectively. Human FGF-4 has been shown to exhibit cross species activity. Expression of FGF-4 and its receptors, FGF R1c, 2c, 3c and 4, is spatially and temporally regulated during embryonic development (1, 3). Its expression in the mouse trophoblast inner cell mass promotes expression of FGF R2, and is required for maintenance of the trophectoderm and primitive endoderm (3-5). Later in mouse development, FGF-4 works together with FGF-8 to mediate the activities of the apical ectodermal ridge, which direct the outgrowth and patterning of vertebrate limbs (3, 6-9). FGF-4 is proposed to play a physiologically relevant role in human embryonic stem cell self-renewal. It promotes stem cell proliferation, but may also aid differentiation depending on context and concentration, and is often included in embryonic stem cell media in vitro (10-12). A C-terminally truncated 15 kDa isoform that opposes full-length FGF-4 and promotes differentiation is endogenously expressed in human embryonic stem cells. FGF-4 is mitogenic for fibroblasts and endothelial cells in vitro and has autocrine transforming potential (13). It is a potent angiogenesis promoter in vivo and has been investigated as therapy for coronary artery disease (14). |
| Accession # | P08620 |
| 运输条件 | Blue Ice |
| N-terminal Sequence Analysis | Ser54, Leu55 |
| 预期分子量 | 17 kDa |
| SDS-PAGE | 16 kDa, reducing conditions |
| 存放说明 | -20℃ |
| 纯度 | >97%, by SDS-PAGE under reducing conditions and visualized by silver stain |
| 参考文献 |
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