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List Of EC Numbers (EC 6)
This list contains a list of EC numbers for the sixth group, EC 6, ligases, placed in numerical order as determined by the Nomenclature Committee of the International Union of Biochemistry and Molecular Biology. All official information is tabulated at the website of the committee. The database is developed and maintained by Andrew McDonald. EC 6.1: Forming Carbon-Oxygen Bonds EC 6.1.1: Ligases Forming Aminoacyl-tRNA and Related Compounds (Aminoacyl tRNA synthetase) * : tyrosine—tRNA ligase * : tryptophan—tRNA ligase * : threonine—tRNA ligase * : leucine—tRNA ligase * : isoleucine—tRNA ligase * : lysine—tRNA ligase * : alanine—tRNA ligase * : Deleted * : valine—tRNA ligase * : methionine—tRNA ligase * : serine—tRNA ligase * : aspartate—tRNA ligase * : D-alanine—poly(phosphoribitol) ligase * : glycine—tRNA ligase * : proline—tRNA ligase * : cysteine—tRNA ligase * : glutamate—tRNA ligase * : glutamine—tRNA ligase * : arginine—tRN ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enzyme Commission Number
The Enzyme Commission number (EC number) is a numerical classification scheme for enzymes, based on the chemical reactions they catalyze. As a system of enzyme nomenclature, every EC number is associated with a recommended name for the corresponding enzyme-catalyzed reaction. EC numbers do not specify enzymes but enzyme-catalyzed reactions. If different enzymes (for instance from different organisms) catalyze the same reaction, then they receive the same EC number. Furthermore, through convergent evolution, completely different protein folds can catalyze an identical reaction (these are sometimes called non-homologous isofunctional enzymes) and therefore would be assigned the same EC number. By contrast, UniProt identifiers uniquely specify a protein by its amino acid sequence. Format of number Every enzyme code consists of the letters "EC" followed by four numbers separated by periods. Those numbers represent a progressively finer classification of the enzyme. Preliminary EC ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acetate-CoA Ligase
Acetyl-CoA synthetase (ACS) or Acetate—CoA ligase is an enzyme () involved in metabolism of acetate. It is in the ligase class of enzymes, meaning that it catalyzes the formation of a new chemical bond between two large molecules. Reaction The two molecules joined together that make up Acetyl CoA are acetate and coenzyme A (CoA). The complete reaction with all the substrates and products included is: : ATP + Acetate + CoA AMP + Pyrophosphate + Acetyl-CoA Once acetyl-CoA is formed it can be used in the TCA cycle in aerobic respiration to produce energy and electron carriers. This is an alternate method to starting the cycle, as the more common way is producing acetyl-CoA from pyruvate through the pyruvate dehydrogenase complex. The enzyme's activity takes place in the mitochondrial matrix so that the products are in the proper place to be used in the following metabolic steps. Acetyl Co-A can also be used in fatty acid synthesis, and a common function of the synthetase ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
D-alanine—(R)-lactate Ligase
D-alanine—(''R'')-lactate ligase (, ''VanA'', ''VanB'', ''VanD'') is an enzyme with systematic name ''D-alanine:(R)-lactate ligase (ADP-forming)''. This enzyme catalyses the following chemical reaction : D-alanine + (R)- lactate + ATP \rightleftharpoons D-alanyl-(R)-lactate + ADP + phosphate In chemistry, a phosphate is an anion, salt, functional group or ester derived from a phosphoric acid. It most commonly means orthophosphate, a derivative of orthophosphoric acid . The phosphate or orthophosphate ion is derived from phosph ... The product of this enzyme can be incorporated into the peptidoglycan pentapeptide instead of the usual D-alanyl-D-alanine dipeptide. References External links * EC 6.1.2 {{Enzyme-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
O-phospho-L-serine—tRNA Ligase
O-phospho-L-serine—tRNA ligase (, ''O-phosphoseryl-tRNA ligase'', ''non-canonical O-phosphoseryl-tRNA synthetase'', ''SepRS'') is an enzyme with systematic name ''O-phospho-L-serine:tRNACys ligase (AMP-forming)''. This enzyme catalyses the following chemical reaction: : ATP + O-phospho-L-serine + tRNACys \rightleftharpoons AMP + diphosphate + O-phospho-L-seryl-tRNACys In organisms like ''Archaeoglobus fulgidus ''Archaeoglobus'' is a genus of the phylum Euryarchaeota. ''Archaeoglobus'' can be found in high-temperature oil fields where they may contribute to oil field souring. Metabolism ''Archaeoglobus'' grow anaerobically at extremely high temperat ...'', this enzyme ligates O-phosphoserine to tRNACys. References External links * {{DEFAULTSORT:O-phospho-L-serine-tRNA ligase EC 6.1.1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyrrolysine—tRNAPyl Ligase
Pyrrolysine—tRNAPyl ligase (, ''PylS'', ''pyrrolysyl-tRNA synthetase'') is an enzyme with systematic name ''L-pyrrolysine:tRNAPyl ligase (AMP-forming)''. This enzyme catalyses the following chemical reaction : ATP + L- pyrrolysine + tRNAPyl \rightleftharpoons AMP + diphosphate In chemistry, pyrophosphates are phosphorus oxyanions that contain two phosphorus atoms in a P–O–P linkage. A number of pyrophosphate salts exist, such as disodium pyrophosphate (Na2H2P2O7) and tetrasodium pyrophosphate (Na4P2O7), among other ... + L-pyrrolysyl-tRNAPyl This enzyme is specific for pyrrolysine as substrate as it cannot be replaced by lysine or any of the other natural amino acids. References External links * {{DEFAULTSORT:Pyrrolysine-tRNAPyl ligase EC 6.1.1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
