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Oxygenase and Carboxylase Activities of RuBP Carboxylase from Wheat Leaves

Boyle, Frances A., KEYS, A. J. (1983) Oxygenase and Carboxylase Activities of RuBP Carboxylase from Wheat Leaves. In: Advances in Photosynthesis - Proceedings of the Sixth International Congress on Photosynthesis. Proceedings of the Sixth International Congress on Photosynthesis. 3. pp. 771-774. Matinis Nijhoff/ Junk,W, The Hague ISBN 978-90-247-2944-9. (doi:10.1007/978-94-017-4973-2_174) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:49285)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided.
Official URL:
http://dx.doi.org/10.1007/978-94-017-4973-2_174

Abstract

The oxygenase reaction catalysed by RuBP carboxylase initiates a metabolic sequence responsible for photorespiration (Bowes et al. 1972). Studies with inhibitors and with mutants show that control of photorespiration can have beneficial effects only if it is achieved by decreasing the oxygenase activity of RuBP carboxylase (Servaites, Ogren, 1977; Somerville, Ogren, 1982). No corroborated evidence is available for carboxylation of RuBP without susceptibility to oxygenation. If oxygenase activity and photorespiration have a function in plants, then regulation by changing levels of metabolic intermediates might be expected. This was investigated in a test system containing purified RuBP carboxylase from wheat with RuBP and rate-limiting concentrations of HCO3 ? and O2. The sensitivity of the ratio vc:vo to pH (CO2 concentration), the presence of carbonic anhydrase (CO2 availability) and the presence of Mn2+ is illustrated to validate the methods used.

Item Type: Conference or workshop item (Proceeding)
DOI/Identification number: 10.1007/978-94-017-4973-2_174
Subjects: Q Science
Divisions: Divisions > Division of Natural Sciences > Biosciences
Depositing User: Frances Mansfield
Date Deposited: 09 Jul 2015 08:14 UTC
Last Modified: 16 Nov 2021 10:20 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/49285 (The current URI for this page, for reference purposes)

University of Kent Author Information

Boyle, Frances A..

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