Yu, T. S., Kofler, H., Hausler, R. E., Hille, D., Flugge, U. I., Zeeman, S. C., Smith, A. M., Kossmann, J., Lloyd, J., Ritte,
G., Steup, M., Lue, W. L., Chen, J. C., & Weber, A. (2001). The Arabidopsis sex1
mutant is defective in the R1 protein, a general regulator of starch degradation in plants, and not in the chloroplast hexose
transporter. Plant Cell, 13(8), 1907-1918. doi:10.1105/tpc.13.8.1907.