SP-A-binding protein BP55 is involved in surfactant endocytosis by type II pneumocytes.

@article{Wissel1996SPAbindingPB,
  title={SP-A-binding protein BP55 is involved in surfactant endocytosis by type II pneumocytes.},
  author={Heide Wissel and A Cornelis Looman and Ingo Fritzsche and Bemd R{\"u}stow and Paul A Stevens},
  journal={The American journal of physiology},
  year={1996},
  volume={271 3 Pt 1},
  pages={L432-40}
}
The mechanism of surfactant protein (SP)-A-mediated lipid uptake by rat type II pneumocytes was investigated. In the absence of SP-A, freshly isolated type II pneumocytes actively take up very little if any liposomes. Most of the increase with time is independent of energy or temperature but is most likely due to spontaneous exchange of labeled lipids between liposomes and cell membranes. With 5 micrograms/ml SP-A, type II cells actively take up liposomes (244 pmol… CONTINUE READING

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