Antibody data
- Antibody Data
- Antigen structure
- References [0]
- Comments [0]
- Validations
- Western blot [1]
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Validation data
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- Product number
- 679702 - Provider product page
- Provider
- BioLegend
- Proper citation
- BioLegend Cat#679702, RRID:AB_2566243
- Product name
- Purified anti-IGFBP-3
- Antibody type
- Monoclonal
- Antigen
- Human IGFBP-3, amino acids (Gly28-Glu291) (Accession# X64875) with an N-terminal Met, was expressed in 293E cells.
- Description
- The insulin-like growth factor system includes two receptors (IGF-1R and IGF-2R), two ligands (IGF-1 and IGF-2), and seven binding proteins (IGFBP1-7). The binding proteins are produced in the liver and bind to the IGFs with different affinities, thus regulating the interaction of the IGFs with their receptors. Insulin-like growth factor binding protein-3 (IGFBP-3) is the major serum carrier protein for IGF proteins. IGFBP-3 sequesters IGF in a stable ternary complex with the acid-labile subunit (ALS). IGFBP-3 binds IGF-1 with high affinity and specificity and modulates IGF-1 action. IGFBP-3 undergoes limited enzymatic proteolysis to generate small N-terminal fragments. These proteolytic products lose their affinity for IGF-1 and IGF-2. Nevertheless, they preserve IGF independent activity. In that sense, a 16 kD fragment (1-95-IGFBP-3) and the full length molecule can potentiate apoptosis in colorectal epithelial cells, and this apoptotic process is associated with the inhibition of TNF-α-induced NF-κB activity. In addition, IGFBP-3 has been detected in the cell nucleus and interacts with 9-cis retinoic acid receptor-alpha (RXR-α), which is a nuclear receptor that is required for the apoptosis-inducing effects of IGFBP-3. IGFBP-3R physically interacts and activates caspase-8 and mediates IGFBP-3-induced apoptosis and tumor suppression.
- Reactivity
- Human
- Host
- Mouse
- Conjugate
- Unconjugated
- Antibody clone number
- M6501G03
- Vial size
- 100 µg
- Concentration
- 0.5 mg/ml
- Storage
- 2°C-8°C
- Handling
- Ambient RT
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Supportive validation
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- BioLegend (provider)
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- Experimental details
- Western blot analysis of recombinant human IGFBP-3. Anti-IGFBP-3 antibody (clone M6501G03) was used, followed by HRP anti-mouse IgG antibody.
- Conjugate
- Unconjugated