- SUT1-promoted sterol uptake involves the ABC transporter Aus1 and the mannoprotein Dan1 whose synergistic action is sufficient for this process. Alimardani, P., Régnacq, M., Moreau-Vauzelle, C., Ferreira, T., Rossignol, T., Blondin, B., Bergès, T. Biochem. J. (2004)