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The function of gly...
The function of glycine decarboxylase complex is optimized to maintain high photorespiratory flux via buffering of its reaction products
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Bykova, Natalia V. (författare)
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Møller, Ian M. (författare)
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- Gardeström, Per (författare)
- Umeå universitet,Umeå Plant Science Centre (UPSC),Institutionen för fysiologisk botanik
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Igamberdiev, Abir U. (författare)
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(creator_code:org_t)
- Elsevier BV, 2014
- 2014
- Engelska.
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Ingår i: Mitochondrion (Amsterdam. Print). - : Elsevier BV. - 1567-7249 .- 1872-8278. ; 19, s. 357-364
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Oxidation of glycine in photorespiratory pathway is the major flux through mitochondria of C3 plants in the light. It sustains increased intramitochondrial concentrations of NADH and NADPH, which are required to engage the internal rotenone-insensitive NAD(P)H dehydrogenases and the alternative oxidase. We discuss here possible mechanisms of high photorespiratory flux maintenance in mitochondria and suggest that it is fulfilled under conditions where the concentrations of glycine decarboxylase reaction products NADH and CO2 achieve an equilibrium provided by malate dehydrogenase and carbonic anhydrase, respectively. This results in the removal of these products from the glycine decarboxylase multienzyme active sites and in the maintenance of their concentrations at levels sufficiently low to prevent substrate inhibition of the reaction.
Ämnesord
- NATURVETENSKAP -- Biologi -- Cellbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Cell Biology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Genetik (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Genetics (hsv//eng)
Nyckelord
- Glycine decarboxylase
- Non-coupled electron transport
- Ma late dehydrogenase
- Carbonic anhydrase
- otorespiration
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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