|Other Names||Pulmonary surfactant-associated protein B, SP-B, 18 kDa pulmonary-surfactant protein, 6 kDa protein, Pulmonary surfactant-associated proteolipid SPL(Phe), SFTPB, SFTP3|
|Format||Synthetic peptide was lyophilized with 100% acetonitrile and is supplied as a powder. Reconstitute with 0.1 ml DI water for a final concentration of 1 mg/ml.|
|Storage||Maintain refrigerated at 2-8°C for up to 6 months. For long term storage store at -20°C.|
|Precautions||This product is for research use only. Not for use in diagnostic or therapeutic procedures.|
|Function||Pulmonary surfactant-associated proteins promote alveolar stability by lowering the surface tension at the air- liquid interface in the peripheral air spaces. SP-B increases the collapse pressure of palmitic acid to nearly 70 millinewtons per meter.|
|Cellular Location||Secreted, extracellular space, surface film.|
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SFTPB is the pulmonary-associated surfactantprotein B (SPB), an amphipathic surfactant protein essential forlung function and homeostasis after birth. Pulmonary surfactant isa surface-active lipoprotein complex composed of 90% lipids and 10%proteins which include plasma proteins and apolipoproteins SPA,SPB, SPC and SPD. The surfactant is secreted by the alveolar cellsof the lung and maintains the stability of pulmonary tissue byreducing the surface tension of fluids that coat the lung. The SPBenhances the rate of spreading and increases the stability ofsurfactant monolayers in vitro. Multiple mutations in this genehave been identified, which cause pulmonary surfactant metabolismdysfunction type 1, also called pulmonary alveolar proteinosis dueto surfactant protein B deficiency, and are associated with fatalrespiratory distress in the neonatal period. Alternatively splicedtranscript variants encoding the same protein have been identified.
Baekvad-Hansen, M., et al. Eur. Respir. J. (2010) In press :Kim, W.J., et al. Eur. Respir. J. (2010) In press :Schuurhof, A., et al. Pediatr. Pulmonol. 45(6):608-613(2010)Cho, M.H., et al. Respir. Res. 11, 30 (2010) :Chaiworapongsa, T., et al. J. Matern. Fetal. Neonatal. Med. 21(9):663-670(2008)
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