Letter | Published:

Hydrolysis of α-Sulphoquinovosides by β-Galactosidase

Naturevolume 192pages11861187 (1961) | Download Citation



EVERY photosynthetic tissue so far examined has been found to contain a high concentration of a sulpholipid1 the structure of which has been elucidated as 6-sulpho-α-D-quinovopyranosy-(1→1′)-2′,3′-diacyl-D-glycerol2,3. A high concentration of the deacylated form of the sulpholipid, G-quinSO3H, occurs in Chlorella and Scenedesmus4. This unique glycoside is cleaved to yield glycerol and 6-sulpho-D-quinovose by a highly purified preparation of β-galactosidase from Escherichia coli ML 308 (ref. 5).

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  1. 1

    Benson, A. A., Daniel, H., and Wiser, R., Proc. U.S. Nat. Acad. Sci., 45, 1582 (1959).

  2. 2

    Daniel, H., Miyano, M., Mumma, R. O., Yagi, T., Lepage, M., Shibuya, I., and Benson, A. A., J. Amer. Chem. Soc., 83, 1765 (1961).

  3. 3

    Miyano, M., and Benson, A. A., J. Amer. Chem. Soc. (in the press).

  4. 4

    Shibuya, I., Ph.D. thesis, Pennsylvania State University (1960).

  5. 5

    Hu, A. S. L., Wolfe, R. G., and Reithel, F. J., Arch. Biochem. Biophys., 81, 500 (1959).

  6. 6

    Miyano, M., and Benson, A. A., J. Amer. Chem. Soc. (in the press).

  7. 7

    Wallenfels, K., and Malhotra, O. M., The Enzymes, edit. by Boyer, P. D., Lardy, H., and Myrbäck, K., second ed., 4, 406 (Academic Press, New York, 1960).

  8. 8

    Carter, H. E., McCluer, R. H., and Slifer, E. D., J. Amer. Chem. Soc., 78, 3735 (1956).

  9. 9

    Carter, H. E., Hendry, R. A., and Stanacev, N. Z., J. Lipid Res., 2, 223 (1961).

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    Present address: Institute of Applied Microbiology, University of Tokyo,

    • A. A. BENSON

    Present address: Laboratory of Nuclear Medicine and Radiation Biology, University of California, Los Angeles, 24, California


  1. Department of Agricultural and Biological Chemistry, The Pennsylvania State University, University Park, Pa.

    •  & A. A. BENSON


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