Purification and functional reconstitution of the 2-oxoglutarate/malate translocator from spinach chloroplasts. 1993

E Menzlaff, and U I Flügge
Julius-von-Sachs-Institut für Biowissenschaften, Universität Würzburg, Lehrstuhl Botanik I, Germany.

The chloroplast 2-oxoglutarate/malate translocator was solubilized from envelope membranes by the detergent n-dodecyl beta-D-maltoside and purified to apparent homogeneity by anion-exchange chromatography followed by gel permeation chromatography. During the purification procedure, the activity of the translocator was monitored by functional reconstitution into phospholipid vesicles. The purified translocator protein has an apparent molecular mass of about 45,000 as revealed by SDS-PAGE. Based on the specific reconstituted transport activity, the purification was about 31-fold with an overall yield of identical to 50%. The substrate specificity of the purified translocator closely resembles that described for the native transport system in intact chloroplasts.

UI MeSH Term Description Entries
D007656 Ketoglutaric Acids A family of compounds containing an oxo group with the general structure of 1,5-pentanedioic acid. (From Lehninger, Principles of Biochemistry, 1982, p442) Oxoglutarates,2-Ketoglutarate,2-Ketoglutaric Acid,2-Oxoglutarate,2-Oxoglutaric Acid,Calcium Ketoglutarate,Calcium alpha-Ketoglutarate,Ketoglutaric Acid,Oxogluric Acid,alpha-Ketoglutarate,alpha-Ketoglutaric Acid,alpha-Ketoglutaric Acid, Calcium Salt (2:1),alpha-Ketoglutaric Acid, Diammonium Salt,alpha-Ketoglutaric Acid, Dipotassium Salt,alpha-Ketoglutaric Acid, Disodium Salt,alpha-Ketoglutaric Acid, Monopotassium Salt,alpha-Ketoglutaric Acid, Monosodium Salt,alpha-Ketoglutaric Acid, Potassium Salt,alpha-Ketoglutaric Acid, Sodium Salt,alpha-Oxoglutarate,2 Ketoglutarate,2 Ketoglutaric Acid,2 Oxoglutarate,2 Oxoglutaric Acid,Calcium alpha Ketoglutarate,alpha Ketoglutarate,alpha Ketoglutaric Acid,alpha Ketoglutaric Acid, Diammonium Salt,alpha Ketoglutaric Acid, Dipotassium Salt,alpha Ketoglutaric Acid, Disodium Salt,alpha Ketoglutaric Acid, Monopotassium Salt,alpha Ketoglutaric Acid, Monosodium Salt,alpha Ketoglutaric Acid, Potassium Salt,alpha Ketoglutaric Acid, Sodium Salt,alpha Oxoglutarate,alpha-Ketoglutarate, Calcium
D007700 Kinetics The rate dynamics in chemical or physical systems.
D008293 Malates Derivatives of malic acid (the structural formula: (COO-)2CH2CHOH), including its salts and esters.
D008565 Membrane Proteins Proteins which are found in membranes including cellular and intracellular membranes. They consist of two types, peripheral and integral proteins. They include most membrane-associated enzymes, antigenic proteins, transport proteins, and drug, hormone, and lectin receptors. Cell Membrane Protein,Cell Membrane Proteins,Cell Surface Protein,Cell Surface Proteins,Integral Membrane Proteins,Membrane-Associated Protein,Surface Protein,Surface Proteins,Integral Membrane Protein,Membrane Protein,Membrane-Associated Proteins,Membrane Associated Protein,Membrane Associated Proteins,Membrane Protein, Cell,Membrane Protein, Integral,Membrane Proteins, Integral,Protein, Cell Membrane,Protein, Cell Surface,Protein, Integral Membrane,Protein, Membrane,Protein, Membrane-Associated,Protein, Surface,Proteins, Cell Membrane,Proteins, Cell Surface,Proteins, Integral Membrane,Proteins, Membrane,Proteins, Membrane-Associated,Proteins, Surface,Surface Protein, Cell
D002352 Carrier Proteins Proteins that bind or transport specific substances in the blood, within the cell, or across cell membranes. Binding Proteins,Carrier Protein,Transport Protein,Transport Proteins,Binding Protein,Protein, Carrier,Proteins, Carrier
D002736 Chloroplasts Plant cell inclusion bodies that contain the photosynthetic pigment CHLOROPHYLL, which is associated with the membrane of THYLAKOIDS. Chloroplasts occur in cells of leaves and young stems of plants. They are also found in some forms of PHYTOPLANKTON such as HAPTOPHYTA; DINOFLAGELLATES; DIATOMS; and CRYPTOPHYTA. Chloroplast,Etioplasts,Etioplast
D013379 Substrate Specificity A characteristic feature of enzyme activity in relation to the kind of substrate on which the enzyme or catalytic molecule reacts. Specificities, Substrate,Specificity, Substrate,Substrate Specificities
D014675 Vegetables A food group comprised of EDIBLE PLANTS or their parts. Vegetable
D026901 Membrane Transport Proteins Membrane proteins whose primary function is to facilitate the transport of molecules across a biological membrane. Included in this broad category are proteins involved in active transport (BIOLOGICAL TRANSPORT, ACTIVE), facilitated transport and ION CHANNELS. Biological Pump,Membrane Transport Protein,Membrane Transporter,Membrane Transporters,Metabolic Pump,Permease,Biological Pumps,Metabolic Pumps,Permeases,Pump, Biologic,Pump, Biological,Pump, Metabolic,Pumps, Biological,Pumps, Metabolic,Biologic Pump,Protein, Membrane Transport,Transport Protein, Membrane,Transport Proteins, Membrane,Transporter, Membrane,Transporters, Membrane

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