Biotin-conjugated recombinant human IGF-I (Insulin-like growth factor 1, somatomedin C), derived from the transfected human HEK293 cells.
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Recombinant Human IGF-I / IGF-1 Protein, Biotinylated
| Size | 10 µg, 50 µg, 100 µg |
| Estimated Lead Time | 2-3 business days |
| Species | Human |
| Accession Number | P05019 |
| Gene Id | 3479 |
| Gene Symbols | IGF1 |
| Protein Name / Synonyms | Insulin-like growth factor I, IGF-I, Mechano growth factor, MGF, Somatomedin-C, Insulin-Like Growth Factor 1, IBP1, IGFI |
| Expressed Region | Gly49-Lys195 |
| Expression System | HEK293 cells |
| Conjugation | Biotin |
| Tag | N-terminal 6x histidine tag and C-terminal mouse IgG Fc tag. The primary amino groups (-NH2) at the N-terminus and the side chains of lysine (K) residues were biotin-conjugated using the standard chemical labeling method. |
| Purity | >90% |
| Purity Determined By | SDS-PAGE under reducing conditions and visualized by Coomassie blue staining |
| Molecular Weight (kDa) | Recombinant mouse IGF-I has a calculated molecular mass of 43 kDa (including a C-terminal mouse IgG Fc tag, 27 kDa). Due to the abundant glycosylation, it migrates as approximately 43-45 kDa protein bands in SDS-PAGE under DTT, beta-mercaptoethanol reducing conditions. |
| Format | Lyophilized powder |
| Formulation | Lyophilized from a 0.2 µm filtered solution in PBS |
| Concentration (lot specific) | Determined by BCA protein assay kit (Thermo Scientific) |
| Preservative | None |
| Reconstitution | Briefly spin the vial and bring the contents to the bottom prior to opening. It is recommended to reconstitute at 0.5 - 1.0 mg/mL with sterile deionized water or 1x PBS. |
| Endotoxin Level | Not determined |
| Research Area | Cancer, Inflammation, IGF Signaling |
| Protein Type | Recombinant Protein |
| Shipping Type | Ambient temperature |
| Storage | -20°C |

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Recombinant Human IGF-I / IGF-1 Protein, Biotinylated performs reliably in release assays with consistent activity and good stability when handled properly.
Review by Paula Oliva Ribas, from The Joshi Lab, on Apr 24, 2026
Recombinant Human IGF-I / IGF-1 Protein, Biotinylated