| There are four surfactant-specific proteins, designated surfactant protein A (SP-A), SP-B, SP-C and SP-D respectively. SP-A and SP-D are hydrophilic surfactant proteins and are members of the collectin family. SP-B and SP-C are hydrophobic surfactant proteins and may be the most appropriate indicators for the evolutionary origin of surfactant. SP-B is synthesized by the alveolar type II epithelial cells as a 40-42 kD precursor that is subsequently proteolytically processed to 7.8-8 kD. SP-B enhances the spreading and stability of surfactant phospho- lipids in the alveolus. SP-B is essential for air-breathing in mammals and is therefore largely conserved. SP-B can interact with both phospholipid head groups and fatty chains and is particularly active in enhancing surface active behavior in endogenous and exogenous lung surfactants. Even low SP-B contents had measurable effects in increasing the adsorption, dynamic surface tension lowering, and/or film respreading of DPPC, mixed synthetic lipids, and column-purified lung surfactant phospholipids. Deficiency of SP-B and other surfactant components is associated with respiratory distress syndrome (RDS) in premature infants and adults with respiratory distress syndrome (ARDS). |
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| Catalog # | S8401-04 |
| Applications | Suitable for use in Western Blot and Immunohistochemistry. Other applications not tested. |
| Recommended Dilutions | Western Blot: 1:10,000 detected Surfactant Protein B in human bronchiolar lavage fluid. |
| Immunohistochemistry: Paraffin embedded tissue sections. |
| Optimal dilutions to be determined by the researcher. |
| Recommended Secondary Antibodies | I1904-39: IgG, X-Adsorbed (HRP) Pab Gt xRb |
| I1904-40A: IgG, H&L, X-Adsorbed (HRP) Pab Gt xRb |
| I1904-46Q: IgG, H&L (HRP) Pab Gt xRb |
| Storage and Stability | May be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Aliquots are stable for 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. |
| CAS Number | n/a |
| Clone Type | Polyclonal |
| Isotype | IgG |
| Host | Rabbit |
| Source | Human |
| Concentration | Not Determined |
| Form | Supplied as a liquid, 0.05% sodium azide, before the addition of glycerol to 30%. |
| Purity | Serum |
| Immunogen | Purified human surfactant protein B. |
| Specificity | Recognizes human Surfactant Protein B, Mr 8kD. Species Crossreactivity: mouse |
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| Important Note | This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological. |
