Granule Bound Starch Synthase

Denyer, K., Barber, L. M., Edwards, E. A., Smith, A. M., and Wang, T. L. (1997). Two isoforms of the GBSSl class of granule bound starch synthase are differently expressed in the pea plant (Pisum sativum L.). Plant, Cell and Environment. 20,1566-1572. 

Table 4.9 Kinetic parameters of the solubilized granule-bound starch synthase of maize endosperm175...

Chorleywood, UK Granule-bound starch synthase (waxy protein) was confirmed in wheat starch 251... 

Table 10.12 Granule-bound starch synthase I (Wx-A1, Wx-B1, and Wx-D1 proteins) and amylose levels in near-isogenic lines266 and isolines273 of wheat...

Antibody prepared against SSSI effectively neutralized SSSI activity, but has little or no effect on either the activities of granule-bound starch synthases I or II or even on SSSII. A result consistent with that obtained with the SSS antiserum is the observation that antibody prepared against the starch granule-bound proteins effectively inhibits granule-bound starch synthase I activity, but has little effect on the SSS (Macdonald and Preiss, 1985). 

The cDNA clones that encode the two isozymes of granule-bound starch synthase of the pea embryo are optimally expressed at different times during development (Dry et al., 1992) although isozyme II is expressed in every organ, isozyme I is not expressed in roots, stipules, or flowers (Dry et al., 1992). 

Delrue, B., Fontaine, T., Routier, F., Decq. A., Wieruszeski, J.-M., Van Den Koomhuyse, N., Maddelein, M.-L., Fournet, B., and Ball, S. 1992. Waxy Chlamydomonas reinhardtii Monocellular algal mutants defective in amylose synthesis and granule-bound starch synthase activity accumulate a structurally modified amylopectin. J. BacterioL 174,3612-3620. 

Dry, I., Smith, A., Edwards, A., Bhattarcharyya, M., Dunn, P., and Martin, C. 1992. Characterization of cDNAs encoding two isoforms of granule-bound starch synthase which show differential expression in developing storage organs of pea and potato. Plant J. 2,193-202. 

Macdonald, F. D., and Preiss, J. 1983. Solubilization of the starch-granule-bound starch synthases of normal maize kernels. Plant Physiol. 73, 175-178. 

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