Bioscience Reports

, Volume 12, Issue 2, pp 115–122 | Cite as

Membrane vesicles from brown adipose tissue: A tool for the study of amino acid transport. The case of L-alanine

  • A. Rodríguez-Martín
  • N. Bel
  • X. Remesar


A density gradient method is used to isolate membrane vesicles from brown adipose tissue. These respond to changes in osmolarity and show the classical overshoot pattern when L-alanine uptake is assayed. Transport is shown to be effected by two components: a linear (Kd=0.498 min−1) and Na+-dependent saturable component (Km=2.3 mM) and a Vmax=19.9 pmol/μg protein·min). This pattern is similar to that shown by cells isolated from brown adipose tissue.

Key Words

alanine brown adipose membrane vesicles transport 



Methyl-aminoisobutyric acid


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Copyright information

© Plenum Publishing Corporation 1992

Authors and Affiliations

  • A. Rodríguez-Martín
    • 1
  • N. Bel
    • 1
  • X. Remesar
    • 1
  1. 1.Unitat de Bioquímica i Biologia Molecular B. Departament de Bioquímica i FisiologiaUniversitat de BarcelonaBarcelonaSpain

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