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Plant Physiology 82:1069-1075 (1986)
© 1986 American Society of Plant Biologists

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Synthesis of Globulins in Maize Embryos 1

Alan L. Kriz2 and Drew Schwartz

Department of Biology, Indiana University, Bloomington, Indiana 47905

The two major components of the globulin fraction in Zea mays embryos are specified by the Prot gene. Pulse-chase analysis of protein synthesis in cultured, immature embryos indicates that the smaller Prot-specific polypeptide, PROT, is derived from the larger polypeptide, PROT'. These experiments also demonstrate that PROT' is derived from a short-lived precursor polypeptide, prePROT'. The primary Prot-specific translation product, as detected by in vitro translation of immature embryo RNA, is of a lower apparent molecular weight than pre-PROT', suggesting the involvement of co- and/or post-translational modification in the production of prePROT'.

2 Present address: Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907.

1 Supported by National Science Foundation grants PCM 82-18076 and PCM 83-19544 to D. S. and United States Public Health Services Training Grant GM 07757-05 to A. L. K.




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P. R. Shewry and N. G. Halford
Cereal seed storage proteins: structures, properties and role in grain utilization
J. Exp. Bot., April 15, 2002; 53(370): 947 - 958.
[Abstract] [Full Text] [PDF]


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Copyright © 1986 by the American Society of Plant Biologists