Biomaterial Database

Evidence for a second histidine at the active site of succinyl-CoA synthetase from Escherichia coli. 1979

G E Collier, and J S Nishimura

Ethoxyformic anhydride was used to demonstrate the existence of a second important histidine in succinyl-CoA synthetase from Escherichia coli. Differential labeling of the enzyme by [3H]ethoxyformic anhydride gave a stoichiometry of one important histidine per alpha beta catalytic unit. Data are presented suggesting that this residue and an important thiol group on the beta subunit (Collier, G., and Nishimura, J.S. (1978) J. Biol. Chem. 253, 4938-4943) interact with each other during catalysis. A mechanism of action involving these 2 residues is proposed for one of the partial reactions catalyzed by succinyl-CoA synthetase.

UI	MeSH Term	Description	Entries
D007700	Kinetics	The rate dynamics in chemical or physical systems.
D010766	Phosphorylation	The introduction of a phosphoryl group into a compound through the formation of an ester bond between the compound and a phosphorus moiety.	Phosphorylations
D011485	Protein Binding	The process in which substances, either endogenous or exogenous, bind to proteins, peptides, enzymes, protein precursors, or allied compounds. Specific protein-binding measures are often used as assays in diagnostic assessments.	Plasma Protein Binding Capacity,Binding, Protein
D003066	Coenzyme A Ligases	Enzymes that catalyze the formation of acyl-CoA derivatives. EC 6.2.1.	Acyl CoA Synthetase,Acyl CoA Synthetases,Acyl Coenzyme A Synthetase,Acyl Coenzyme A Synthetases,Coenzyme A Ligase,Coenzyme A Synthetase,Coenzyme A Synthetases,Acid-Thiol Ligases,Co A Ligases,A Ligase, Coenzyme,A Synthetase, Coenzyme,Acid Thiol Ligases,CoA Synthetase, Acyl,CoA Synthetases, Acyl,Ligase, Coenzyme A,Ligases, Acid-Thiol,Ligases, Co A,Ligases, Coenzyme A,Synthetase, Acyl CoA,Synthetase, Coenzyme A,Synthetases, Acyl CoA,Synthetases, Coenzyme A
D004047	Diethyl Pyrocarbonate	Preservative for wines, soft drinks, and fruit juices and a gentle esterifying agent.	Diethyl Dicarbonate,Diethyl Oxydiformate,Pyrocarbonic Acid Diethyl Ester,Diethylpyrocarbonate,Ethoxyformic Anhydride,Anhydride, Ethoxyformic,Dicarbonate, Diethyl,Oxydiformate, Diethyl,Pyrocarbonate, Diethyl
D004926	Escherichia coli	A species of gram-negative, facultatively anaerobic, rod-shaped bacteria (GRAM-NEGATIVE FACULTATIVELY ANAEROBIC RODS) commonly found in the lower part of the intestine of warm-blooded animals. It is usually nonpathogenic, but some strains are known to produce DIARRHEA and pyogenic infections. Pathogenic strains (virotypes) are classified by their specific pathogenic mechanisms such as toxins (ENTEROTOXIGENIC ESCHERICHIA COLI), etc.	Alkalescens-Dispar Group,Bacillus coli,Bacterium coli,Bacterium coli commune,Diffusely Adherent Escherichia coli,E coli,EAggEC,Enteroaggregative Escherichia coli,Enterococcus coli,Diffusely Adherent E. coli,Enteroaggregative E. coli,Enteroinvasive E. coli,Enteroinvasive Escherichia coli
D006639	Histidine	An essential amino acid that is required for the production of HISTAMINE.	Histidine, L-isomer,L-Histidine,Histidine, L isomer,L-isomer Histidine
D001665	Binding Sites	The parts of a macromolecule that directly participate in its specific combination with another molecule.	Combining Site,Binding Site,Combining Sites,Site, Binding,Site, Combining,Sites, Binding,Sites, Combining
D013056	Spectrophotometry, Ultraviolet	Determination of the spectra of ultraviolet absorption by specific molecules in gases or liquids, for example Cl2, SO2, NO2, CS2, ozone, mercury vapor, and various unsaturated compounds. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)	Ultraviolet Spectrophotometry
D013389	Succinate-CoA Ligases	Enzymes that catalyze the first step leading to the oxidation of succinic acid by the reversible formation of succinyl-CoA from succinate and CoA with the concomitant cleavage of ATP to ADP (EC 6.2.1.5) or GTP to GDP (EC 6.2.1.4) and orthophosphate. Itaconate can act instead of succinate and ITP instead of GTP.EC 6.2.1.-.	Succinate-CoA Ligase,Succinate-CoA Ligase (GDP-Forming),Succinate-CoA Ligases (ADP-Forming),Succinic Thiokinase,Succinic Thiokinases,Succinyl CoA Synthetase,Succinyl CoA Synthetases,Succinyl Coenzyme A Synthetase,Succinyl Coenzyme A Synthetases,CoA Synthetase, Succinyl,CoA Synthetases, Succinyl,Ligase, Succinate-CoA,Ligases, Succinate-CoA,Succinate CoA Ligase,Succinate CoA Ligases,Synthetase, Succinyl CoA,Synthetases, Succinyl CoA,Thiokinase, Succinic,Thiokinases, Succinic