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GO:0003674
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molecular_function
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A molecular process that can be carried out by the action of a single macromolecular machine, usually via direct physical interactions with other molecular entities. Function in this sense denotes an action, or activity, that a gene product (or a complex) performs. |
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GO:0003824
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catalytic activity
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Catalysis of a biochemical reaction at physiological temperatures. In biologically catalyzed reactions, the reactants are known as substrates, and the catalysts are naturally occurring macromolecular substances known as enzymes. Enzymes possess specific binding sites for substrates, and are usually composed wholly or largely of protein, but RNA that has catalytic activity (ribozyme) is often also regarded as enzymatic. |
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GO:0140640
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catalytic activity, acting on a nucleic acid
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Catalytic activity that acts to modify a nucleic acid. |
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GO:0016874
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ligase activity
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Catalysis of the joining of two molecules, or two groups within a single molecule, using the energy from the hydrolysis of ATP, a similar triphosphate, or a pH gradient. |
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GO:0140101
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catalytic activity, acting on a tRNA
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Catalytic activity that acts to modify a tRNA. |
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GO:0140098
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catalytic activity, acting on RNA
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Catalytic activity that acts to modify RNA. |
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GO:0016875
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ligase activity, forming carbon-oxygen bonds
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Catalysis of the joining of two molecules via a carbon-oxygen bond, with the concomitant hydrolysis of the diphosphate bond in ATP or a similar triphosphate. |
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GO:0004812
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aminoacyl-tRNA ligase activity
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Catalysis of the formation of aminoacyl-tRNA from ATP, amino acid, and tRNA with the release of diphosphate and AMP. |
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GO:0004821
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histidine-tRNA ligase activity
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Catalysis of the reaction: ATP + L-histidine + tRNA(His) = AMP + diphosphate + L-histidyl-tRNA(His). |
