| Nichols, D.J., Keeling P.L. Spalding, M. and Guan H. (2000) Involvement of Conserved Aspartate and Glutamate
Residues in the catalysis and substrate binding of maize starch synthase. Biochemistry 39: 7820-7825. Wilhelm, E.P., Mullen R.E., Keeling P.L. and Singletary G.W. (1999) Heat stress during grain filling in maize: Effects on kernel growth and metabolism. Crop Science 39: 1733-1741. Imparl-Radosevich J.M., Keeling P.L. and Guan H. (1999) Essential arginine residues in maize starch synthase IIa are involved in both ADP-glucose and primer binding. FEBS Letters 457: 357-362. Cao H., Imparl-Radosevich J.M., Guan H., Keeling P.L., James M. and Myers A.M. (1999) Identification of soluble starch synthase activities of maize endosperm. Plant Physiology 120: 205-215. Imparl-Radosevich J.M., Nichols D.J., Li P., McKean A.L., Keeling P.L. and Guan H. (1999) Characterization of Maize Starch Synthases IIa and IIb: SS isoforms can be distinguished based on their kinetic properties Arch Biochem Biophys 362: 131-138. Guan, H-P., and Keeling, P. L. (1998) Starch Biosynthesis: Understanding the Functions and Interactions of Multiple Isozymes of Starch Synthase and Branching Enzyme. Trends in Glycoscience and Glycotechnology 10: 307-319. Imparl-Radosevich J.M., Li P., Zhang L., McKean A.L., Keeling P.L. and Guan H. (1998) Purification and Characterization of Maize Starch Synthase I and its Truncated Forms. Arch. Biochem Biophys 353: 64-72. Harn, C., Knight M., Ramakrishnan, A., Guan, H-P., Keeling, P. L. and Wasserman, B. P. (1998) Isolation and Characterization of the Ss2 Starch Synthase cDNA Clones from Maize Endosperm. Plant Molec Biol 37: 639-649. Knight M., Harn, C., Lilley, C.E.R., Guan, H-P., Singletary, G. W., Mu-Forster, C., Wasserman, B.P., and Keeling, P.L. (1998) Molecular cloning of starch synthase I from Zea mays endosperm and expression in E.coli. The Plant Journal 14: 613-622. Lu T-J., Jane J-L., and Keeling P.L. (1997) Temperature effect on retrogradation rate and crystalline structure of amylose. Carbohydrate Polymers 33: 19-26. Guan H-P., Li P., Imparl-Radosevich J., Preiss J. and Keeling P.L. (1997) Comparing the properties of Echerichia coli branching enzyme and maize branching enzyme. Arch Biochem Biophys 342: 92-98. Singletary G.W., Banisadr R. and Keeling P.L. (1997) Influence of gene dosage on carbohydrate synthesis and enzymatic activities in endosperm of starch-deficient mutants of maize. Plant Physiology 113: 293-304. Keeling P.L. (1997) Starch Biotechnology: Technical Barriers to Starch Improvement. In: Starch: Structure and Functionality. The Royal Society of Chemistry, London. Denyer K., Dunlap F. Thorbjornsen T., Keeling P.L., Smith A.M. (1996) The major form of ADP-glucose pyrophosphorylase activity in Maize (Zea Mays L.) endosperm is extra-plastidial. Plant Physiology 112: 779-785. Ball S., Guan H-P., James M., Myers A., Keeling P.L., Mouille G., Buleon A., Colonna P., and Preiss J. (1996) From glycogen to amylopectin: a model explaining the biogenesis of the plant starch granule. Cell 86: 349-352. Mu-Forster, C., Huang, R., Powers, J.R., Harriman, R.W., Knight, M., Singletary, G. W., Keeling, P. L. and Wasserman, B. P. (1996) Physical Association of starch biosynthetic enzymes with starch granules of maize endosperm: Granule-associated forms of starch synthase I and starch branching enzyme II. Plant Physiology 111: 821-829. Zehr BE, Eckhoff SR, Nyquist WE, and Keeling P.L. (1996) Heritability of product fractions from wet milling and related properties of maize grain. Crop Sci 36: 1159-1165. Eckhoff SR, Singh SK, Zehr BE, Rausch KD, Fox EJ, Mistry AK, Haken AE, Niu YX, Zou SH, Buriak P, Tumbleson ME and Keeling P.L. (1996) A 100 g laboratory scale corn wet milling procedure. Cereal Chemistry 73: 54-57. Lu T-J., Jane J_L., Keeling PL., and Singletary GW. (1996) Effects of ear developmental temperature on maize starch fine structure. Carbohydrate Research 282: 157-170. Hylton C.M., Denyer K., Keeling P.L., Chang M-T., and Smith A.M. (1996) The effects of waxy mutations on the granule-bound starch synthases of barley and maize endosperms. Planta 198: 230-237. Zehr BE, Eckhoff SR, Singh SK, and Keeling PL. (1995) Comparison of wet milling properties among maize inbred lines and their hybrids. Cereal Chemistry 72: 491-497. Singletary G.W., Banisadr R. and Keeling P.L. (1994). Heat stress during grain filling in maize: Effects on carbohydrate storage and metabolism. Aust J Pl Physiol. 21 829-841. Keeling P.L., Banisadr R., Barone L., Wasserman B.P. and Singletary G.W. (1994). Effects of temperature on enzymes in the pathway of starch biosynthesis in developing wheat and maize grain. Aust J Pl Physiol. 21 807-827. Mu, C., Harn, C., Ko, Y., Singletary, G. W., Keeling, P. L. and Wasserman, B. P. (1994) Association of a 76kDa polypeptide with soluble starch synthase I activity in maize (cv B73) endosperm. Plant Journal 6, 151-159. Chang M-T, Rimathe D, Becker L, Keeling PL and Neuffer MG. (1994) Characterization of chemical composition of maize defective kernel mutants. In:"Proceedings of SABRAO Seventh International Congress and WSAA Symposium. Volume I" Towards Enhanced and Sustainable Agricultural Production in the 2000's. Pages 189-200. Keeling P.L., Bacon P.J. and Holt D.C. (1993) Elevated temperature reduces starch deposition in wheat endosperm by reducing the activity of soluble starch synthase. Planta, 191(3) 342-348. Singletary, G. W. Banisadr, R. and Keeling, P.L. (1993) Decreased Starch Synthesis in Heat Stressed Maize Kernels Results from Reduced ADPG Pyrophosphorylase and Starch Synthase Activities. Plant Physiol 102, 6 Banisadr R., Singletary G.W. and Keeling P.L. (1991) Developmental profile of carbohydrate metabolism enzymes and storage components of starch in maize endosperm. Invited presentation at the 34th West Central States Biochemistry Conference. Keeling P.L. and Greaves J.G. (1990) Response of corn to temperature stresses and opportunities for breeding and biotechnology. Invited presentation at the 45th Annual Corn and Sorghum Industry Research Conference. ASTA Annual Meeting 5-6 Dec 1990. Keeling P.L. and Singletary G.W. (1990) Temperature effects on grain filling processes. Invited presentation at the symposium on "Environmental Effects on Seed Development in Crop Plants". Crop Science Society of America Annual Meeting 21-26 Oct 1990. Singletary G.W., Banisadr R., Barnett, P., Rimathe D. and Keeling P.L. (1990) Sugar metabolism of gene dose series involving starch mutant of maize. Oral presentation at Annual Plant Phys Society Meeting, Indianapolis. Plant Phys (suppl) 93 Foxon G.A., Catt L. and Keeling P.L. (1990) Starch biosynthesis in developing wheat grain: The effect of light on endosperm starch synthesis in-vitro and in-vivo. Planta 181 104-108. Keeling P.L., Baird S. and Tyson R.H. (1989) Isolation and properties of protoplasts from endosperm of developing wheat grain. Plant Science 65 55-62. Keeling, P.L. (1989) Evidence against triose phosphate transport into amyloplasts of developing wheat and maize grain. In: Physiology, biochemistry and genetics of nongreen plastids pp 63-78. Boyer, C.D., Shannon, J.C., Harrison R.C. eds. The American Society of Plant Physiologists Keeling P.L. (1989) The pathway and compartmentation of starch synthesis in developing wheat grain. Ed. M.J. Emes. pp 111-125. SEB Seminar Series 42. Presentation at the Combined Biochemical Society and Society for Experimental Biology Symposium on Compartmentation of Metabolism in Non-Photosynthetic Tissues, April 1989. Keeling P.L., Wood J.R., Tyson R.H. and Bridges I.G. (1988) Starch biosynthesis in developing wheat grain: Evidence against the direct involvement of triose phosphates in the metabolic pathway. Plant Physiology 87 311-319. Keeling P.L. and James P. (1986) Desalting and freeze-drying techniques to prepare plant derived neutral sugar extracts for quantitative HPLC. J. Liq. Chromatog. 9 983-992. Keeling P.L. Catt L. and Foxon G.A. (1984) Starch biosynthesis in developing wheat grain: The effect of light on endosperm starch synthesis in-vitro and in-vivo. Poster presentation to The British Plant Growth Regulator Group. York meeting on Regulation of Sources and Sinks in Crop Plants. Keeling P.L., Tyson R.H. and Bridges I.G. (1983) Evidence for the involvement of triose phosphates in the pathway of starch biosynthesis in developing wheat grain. Poster presentation to The Biochemical Society. 603rd meeting Liverpool. Biochem. Soc. Transactions 11 791-792. Keeling P.L., Tyson R.H. and Bridges I.G. (1983) Evidence for the involvement of triose phosphates in the pathway of starch biosynthesis in developing wheat grain. Poster presentation to The 15th Federation of European Biochemical Society Meeting. Brussels, Belgium. Keeling P.L., Tyson R.H. and Bridges I.G. (1983) Evidence for the involvement of triose phosphates in the pathway of starch biosynthesis in developing wheat grain. Poster presentation to The Phytochemical Society Meeting. Toulouse, France. Membranes and compartmentation in regulation of plant functions. Keeling P.L. Smith L.L. and Aldridge W.N. (1982) The formation of mixed disulphides in rat lung following paraquat administration: correlation with changes in intermediary metabolism. Biochim. Biophys. Acta 716 249-257. Keeling P.L. and Smith L.L. (1982) Relevance of NADPH depletion and formation of mixed disulphides in rat lung following paraquat poisoning to the mechanism of cell damage. Biochem. Pharmacol. 31 3243-3249. Keeling P.L., Pratt I.S., Aldridge W.N. and Smith L.L. (1981) The enhancement of paraquat toxicity in rats by 85% oxygen: lethality and cell specific lung damage. Brit. J. Exp. Path. 62 642-654. Keeling P.L. and Smith L.L. (1981) Possible role of mixed disulphide formation by paraquat in rat lung in the mechanism of control of intermediary metabolism. Oral presentation to The Biochemical Society. 597th meeting London. Biochem. Soc. Trans. 10 116-117. Keeling P.L and Smith L.L. (1980) The importance of NADPH depletion in the mechanism of paraquat (PQ) toxicity. Poster presentation to The American Society of Pharmacology and Experimental Therapeutics. Rochester, Minnesota. Pharmacologist 22 213. Pratt I.S., Keeling P.L. and Smith L.L. (1980) The effect of high concentrations of oxygen on paraquat and diquat toxicity in rats. Arch. Toxicol. Suppl. 4 415-418. Pratt I.S., Keeling P.L. and Smith L.L. (1979) The effect of high concentrations of oxygen on the toxicity of paraquat and diquat in rats. Toxicol. Appl. Pharmacol. 48 A59. |