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Research ArticleMetabolism and Enzymology
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Subcellular Distribution of O-Acetylserine(thiol)lyase in Cauliflower (Brassica oleracea L.) Inflorescence

Norbert Rolland, Michel Droux, Roland Douce
Norbert Rolland
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Michel Droux
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Roland Douce
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Published March 1992. DOI: https://doi.org/10.1104/pp.98.3.927

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Abstract

The subcellular localization of O-acetyiserine(thiol)lyase (EC 4.2.99.8) in nongreen tissue from higher plants has been studied using purified proplastids, mitochondria, and protoplasts from cauliflower (Brassica oleracea L.) buds as a source of subcellular fractions. O-Acetylserine(thiol)lyase has been detected in both organelles (proplastids and mitochondria) and a cytosolic extract obtained by protoplast fractionation. We confirmed these observations, demonstrating that a form of the enzyme different in global charge and separated from others by anion-exchange chromatography corresponded to each subcellular location. Our observations are consistent with the need for cysteine biosynthesis in each subcellular compartment where the synthesis of proteins occurs.

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Subcellular Distribution of O-Acetylserine(thiol)lyase in Cauliflower (Brassica oleracea L.) Inflorescence
Norbert Rolland, Michel Droux, Roland Douce
Plant Physiology Mar 1992, 98 (3) 927-935; DOI: 10.1104/pp.98.3.927

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Subcellular Distribution of O-Acetylserine(thiol)lyase in Cauliflower (Brassica oleracea L.) Inflorescence
Norbert Rolland, Michel Droux, Roland Douce
Plant Physiology Mar 1992, 98 (3) 927-935; DOI: 10.1104/pp.98.3.927
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Plant Physiology
Vol. 98, Issue 3
March 1992
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More in this TOC Section

  • Tomato Fruit Polygalacturonase Isozyme 1 (Characterization of the [beta] Subunit and Its State of Assembly in Vivo)
  • A Novel Metabolic Pathway for Indole-3-Acetic Acid in Apical Shoots of Populus tremula (L.) x Populus tremuloides (Michx.)
  • Biosynthesis of Cardiolipin in Plant Mitochondria
Show more Metabolism and Enzymology

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