Pyruvate Orthophosphate Dikinase mRNA Organ Specificity in Wheat and Maize
- 1 September 1984
- journal article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 76 (1) , 278-280
- https://doi.org/10.1104/pp.76.1.278
Abstract
Polyadenylated RNA was isolated from leaves and seeds of a C3 plant (Triticum aestivum L. cv Cheyenne, CI 8885) and from a C4 plant (Zea mays L. cv Golden bantam). Each polyadenylated RNA preparation was translated in vitro with micrococcal nuclease-treated reticulocyte lysate. When the in vitro translation products were probed with antibodies to pyruvate orthophosphate dikinase (PPDK) (EC 2.7.9.1), two sizes of polypeptide were identified. A 110 kilodalton polypeptide was found in the in vitro translation products of mRNA isolated exclusively from leaves of both wheat and maize. A 94 kilodalton polypeptide, similar to the PPDK polypeptide which can be extracted after in vivo synthesis in maize and wheat leaves and seeds, was found in the in vitro translation products obtained from wheat seeds and maize kernels.Keywords
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