Characterization of a Malonyl-Enzyme Intermediate and Identification of the Malonyl Binding Site in Malonyl Coenzyme A-Acyl Carrier Protein Transacylase of Escherichia coli
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چکیده
منابع مشابه
Mutants of Escherichia coli with temperature-sensitive malonyl coenzyme A-acyl carrier protein transacylase.
We have characterized two mutants of Escherichia coli in which fatty acid biosynthesis is adversely affected by elevated temperature. Under conditions which do not alter the activity of wild type cell-free extracts, virtually all of the malonyl coenzyme A-acyl carrier protein (ACP) transacylase and fatty acid synthetase activities present in mutant extracts are thermolabile. Malonyl transacylas...
متن کاملCharacterization of a Pseudomonas aeruginosa fatty acid biosynthetic gene cluster: purification of acyl carrier protein (ACP) and malonyl-coenzyme A:ACP transacylase (FabD).
A DNA fragment containing the Pseudomonas aeruginosa fabD (encoding malonyl-coenzyme A [CoA]:acyl carrier protein [ACP] transacylase), fabG (encoding beta-ketoacyl-ACP reductase), acpP (encoding ACP), and fabF (encoding beta-ketoacyl-ACP synthase II) genes was cloned and sequenced. This fab gene cluster is delimited by the plsX (encoding a poorly understood enzyme of phospholipid metabolism) an...
متن کاملMalonyl coenzyme A synthetase. Purification and properties.
Malonyl coenzyme A synthetase (EC 6.2.1.14) was induced in Pseudomonas fluorescens grown on malonate as a sole carbon source. This enzyme was purified, for the first time, over 30-fold by the combination of ammonium sulfate precipitation, Sephadex G-150 gel filtration, DEAE-Sephacel ion exchange chromatography, and hydroxylapatite chromatography. The purified enzyme, which had a specific activi...
متن کاملRegulation of malonyl-CoA-acyl carrier protein transacylase network in umbilical cord blood affected by intrauterine hyperglycemia
BACKGROUND Gestational diabetes mellitus (GDM) has been shown to be associated with high risk of diabetes in offspring. However, the mechanisms involved in the insulin resistance in offspring are still unclear. Mitochondrial dysfunction is related with insulin resistance. In mitochondria, malonyl-CoA-acyl carrier protein transacylase (MCAT) is the key enzyme of mitochondrial fatty acid synthesi...
متن کاملStudies on the mechanism of fatty acid synthesis. XVI. Preparation and general properties of acyl-malonyl acyl carrier protein-condensing enzyme from Escherichia coli.
Acyl-malonyl acyl carrier protein (ACP)-condensing enzyme, prepared from extracts of Escherichia coli, catalyzes the condensation of acetyl-ACP and malonyl-ACP to form acetoacetyl-ACP. It also catalyzes the condensation of various longer chain saturated acyl-ACP derivatives with malonyl-ACP to form the P-ketoacyl-ACP of the longer homologues. The enzyme is specific for the acyl-ACP derivatives ...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1973
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(19)43198-0