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Glycosomes A comprehensive view of their metabolic roles in T. brucei.pdf
The International Journal of Biochemistry Cell Biology 85 (2017) 85–90
Contents lists available at ScienceDirect
The International Journal of Biochemistry Cell Biology
journal homepage: /locate/biocel
Organelles in focus
Glycosomes: A comprehensive view of their metabolic roles in T. brucei
Stefan Allmann, Frédéric Bringaud ?
Laboratoire de Microbiologie Fondamentale et Pathogénicité (MFP), Université de Bordeaux, CNRS UMR-5234, Bordeaux, France
article info
Article history: Received 21 December 2016 Received in revised form 27 January 2017 Accepted 29 January 2017 Available online 6 February 2017
Keywords: Peroxisome-like organelle Glycosome Glycolysis and gluconeogenesis Purine and pyrimidine biosynthesis ATP/ADP and NAD/NADH glycosomal balances
abstract
Peroxisomes are single-membrane cellular organelles, present in most eukaryotic cells and organisms from human to yeast, ful?lling essential metabolic functions in lipid metabolism, free radical detoxi?cation, differentiation, development, morphogenesis, etc. Interestingly, the protozoan parasite species Trypanosoma contains peroxisome-like organelles named glycosomes, which lack hallmark peroxisomal pathways and enzymes, such as catalase. Glycosomes are the only peroxisome-like organelles containing most enzymatic steps of the glycolytic pathway as well as enzymes of pyrimidine biosynthesis, purine salvage and biosynthesis of nucleotide sugars. We present here an overview of the glycosomal metabolic peculiarities together with the current view of the raison d’être of this unique metabolic peroxisomal sequestration.
? 2017 Elsevier Ltd. All rights reserved.
1. Introduction
Glycosomes are specialized peroxisomes found in organisms belonging to the protist group of Kinetoplastea and Diplonemida from the eukaryotic supergroup Excavata (for a recent review see Gualdron-Lopez et al., 2012). This includes trypanosomatid parasites of the Trypanosoma and Leishmania species, which are responsible for a number of diseases
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